SN50v3-LB LoRaWAN Sensor Node User Manual

(% style="color:blue" %)**SN50V3-LB **(%%)LoRaWAN Sensor Node is a Long Range LoRa Sensor Node. It is designed for outdoor use and powered by (% style="color:blue" %)** 8500mA Li/SOCl2 battery**(%%) for long term use.SN50V3-LB is designed to facilitate developers to quickly deploy industrial level LoRa and IoT solutions. It help users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to program, create and connect your things everywhere.

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(% style="color:blue" %)**SN50V3-LB wireless part**(%%) is based on SX1262 allows the user to send data and reach extremely long ranges at low data-rates.It provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption.It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.

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(% style="color:blue" %)**SN50V3-LB **(%%)has a powerful 48Mhz ARM microcontroller with 256KB flash and 64KB RAM. It has multiplex I/O pins to connect to different sensors.

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(% style="color:blue" %)**SN50V3-LB**(%%) has a built-in BLE module, user can configure the sensor remotely via Mobile Phone. It also support OTA upgrade via private LoRa protocol for easy maintaining.

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SN50V3-LB is the 3^^rd^^ generation of LSN50 series generic sensor node from Dragino. It is an (% style="color:blue" %)**open source project**(%%) and has a mature LoRaWAN stack and application software. User can use the pre-load software for their IoT projects or easily customize the software for different requirements.

== 1.2 Features ==

* LoRaWAN 1.0.3 Class A

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* Ultra-low power consumption

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* Open-Source hardware/software

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* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865

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* Support Bluetooth v5.1 and LoRaWAN remote configure

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* Support wireless OTA update firmware

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* Uplink on periodically

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* Downlink to change configure

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* 8500mAh Battery for long term use

== 1.3 Specification ==

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(% style="color:#037691" %)**Common DC Characteristics:**

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* Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v

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* Operating Temperature: -40 ~~ 85°C

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(% style="color:#037691" %)**I/O Interface:**

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* Battery output (2.6v ~~ 3.6v depends on battery)

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* +5v controllable output

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* 3 x Interrupt or Digital IN/OUT pins

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* 3 x one-wire interfaces

* 1 x UART Interface

* 1 x I2C Interface

(% style="color:#037691" %)**LoRa Spec:**

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* Frequency Range, Band 1 (HF): 862 ~~ 1020 Mhz

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* Max +22 dBm constant RF output vs.

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* RX sensitivity: down to -139 dBm.

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* Excellent blocking immunity

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(% style="color:#037691" %)**Battery:**

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* Li/SOCI2 un-chargeable battery

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* Capacity: 8500mAh

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* Self-Discharge: <1% / Year @ 25°C

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* Max continuously current: 130mA

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* Max boost current: 2A, 1 second

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(% style="color:#037691" %)**Power Consumption**

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* Sleep Mode: 5uA @ 3.3v

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* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

== 1.4 Sleep mode and working mode ==

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(% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.

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(% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.

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== 1.5 Button & LEDs ==

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[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

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|=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**

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|(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((

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If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.

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Meanwhile, BLE module will be active and user can connect via BLE to configure device.

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|(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((

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(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network.

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(% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.

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Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.

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)))

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|(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.

== 1.6 BLE connection ==

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SN50v3-LB supports BLE remote configure.

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BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:

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* Press button to send an uplink

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* Press button to active device.

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* Device Power on or reset.

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If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.

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== 1.7 Pin Definitions ==

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[[image:image-20230610163213-1.png||height="404" width="699"]]

== 1.8 Mechanical ==

[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]

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[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]

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[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]

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== 1.9 Hole Option ==

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SN50v3-LB has different hole size options for different size sensor cable. The options provided are M12, M16 and M20. The definition is as below:

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220627104757-1.png?rev=1.1||alt="image-20220627104757-1.png"]]

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656298089706-973.png?rev=1.1||alt="1656298089706-973.png"]]

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= 2. Configure SN50v3-LB to connect to LoRaWAN network =

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== 2.1 How it works ==

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The SN50v3-LB is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the SN50v3-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.

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== 2.2 Quick guide to connect to LoRaWAN server (OTAA) ==

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Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.

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The LPS8v2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.

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(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from SN50v3-LB.

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Each SN50v3-LB is shipped with a sticker with the default device EUI as below:

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-LB_S31B-LB/WebHome/image-20230426084152-1.png?width=502&height=233&rev=1.1||alt="图片-20230426084152-1.png" height="233" width="502"]]

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You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:

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(% style="color:blue" %)**Register the device**

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]

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(% style="color:blue" %)**Add APP EUI and DEV EUI**

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]

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(% style="color:blue" %)**Add APP EUI in the application**

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="图片-20220611161308-5.png"]]

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(% style="color:blue" %)**Add APP KEY**

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]

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(% style="color:blue" %)**Step 2:**(%%) Activate SN50v3-LB

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Press the button for 5 seconds to activate the SN50v3-LB.

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(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.

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After join success, it will start to upload messages to TTN and you can see the messages in the panel.

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== 2.3 Uplink Payload ==

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=== 2.3.1 Device Status, FPORT~=5 ===

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Users can use the downlink command(**0x26 01**) to ask SN50v3-LB to send device configure detail, include device configure status. SN50v3-LB will uplink a payload via FPort=5 to server.

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The Payload format is as below.

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

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|(% colspan="6" style="background-color:#d9e2f3; color:#0070c0" %)**Device Status (FPORT=5)**

Example parse in TTNv3

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(% style="color:#037691" %)**Sensor Model**(%%): For SN50v3-LB, this value is 0x1C

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(% style="color:#037691" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version

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(% style="color:#037691" %)**Frequency Band**:

0x01: EU868

0x02: US915

0x03: IN865

0x04: AU915

0x05: KZ865

0x06: RU864

0x07: AS923

0x08: AS923-1

0x09: AS923-2

0x0a: AS923-3

0x0b: CN470

0x0c: EU433

0x0d: KR920

0x0e: MA869

(% style="color:#037691" %)**Sub-Band**:

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AU915 and US915:value 0x00 ~~ 0x08

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CN470: value 0x0B ~~ 0x0C

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Other Bands: Always 0x00

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(% style="color:#037691" %)**Battery Info**:

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Check the battery voltage.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

=== 2.3.2 Working Modes & Sensor Data. Uplink via FPORT~=2 ===

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SN50v3-LB has different working mode for the connections of different type of sensors. This section describes these modes. Use can use the AT Command (% style="color:blue" %)**AT+MOD**(%%) to set SN50v3-LB to different working modes.

For example:

(% style="color:blue" %)**AT+MOD=2 ** (%%) ~/~/ will set the SN50v3 to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.

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(% style="color:red" %) **Important Notice:**

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~1. Some working modes has payload more than 12 bytes, The US915/AU915/AS923 frequency bands' definition has maximum 11 bytes in (% style="color:blue" %)**DR0**(%%). Server sides will see NULL payload while SN50v3-LB transmit in DR0 with 12 bytes payload.

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2. All modes share the same Payload Explanation from HERE.

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3. By default, the device will send an uplink message every 20 minutes.

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==== 2.3.2.1 MOD~=1 (Default Mode) ====

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In this mode, uplink payload includes in total 11 bytes. Uplink packets use FPORT=2.

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

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|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:130px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**2**

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|Value|Bat|(% style="width:191px" %)(((

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Temperature(DS18B20)(PC13)

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)))|(% style="width:78px" %)(((

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ADC(PA4)

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)))|(% style="width:216px" %)(((

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Digital in(PB15)&Digital Interrupt(PA8)

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)))|(% style="width:308px" %)(((

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Temperature(SHT20 or SHT31 or BH1750 Illumination Sensor)

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)))|(% style="width:154px" %)(((

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Humidity(SHT20 or SHT31)

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)))

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220627150949-6.png?rev=1.1||alt="image-20220627150949-6.png"]]

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==== 2.3.2.2 MOD~=2 (Distance Mode) ====

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This mode is target to measure the distance. The payload of this mode is totally 11 bytes. The 8^^th^^ and 9^^th^^ bytes is for the distance.

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

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|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:30px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:140px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**

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|Value|BAT|(% style="width:196px" %)(((

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Temperature(DS18B20)(PC13)

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)))|(% style="width:87px" %)(((

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ADC(PA4)

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)))|(% style="width:189px" %)(((

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Digital in(PB15) & Digital Interrupt(PA8)

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)))|(% style="width:208px" %)(((

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Distance measure by: 1) LIDAR-Lite V3HP

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Or 2) Ultrasonic Sensor

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)))|(% style="width:117px" %)Reserved

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656324539647-568.png?rev=1.1||alt="1656324539647-568.png"]]

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(% style="color:blue" %)**Connection of LIDAR-Lite V3HP:**

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[[image:image-20230512173758-5.png||height="563" width="712"]]

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(% style="color:blue" %)**Connection to Ultrasonic Sensor:**

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(% style="color:red" %)**Need to remove R1 and R2 resistors to get low power,otherwise there will be 240uA standby current.**

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[[image:image-20230512173903-6.png||height="596" width="715"]]

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For the connection to TF-Mini or TF-Luna , MOD2 payload is as below:

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

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|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:120px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**2**

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|Value|BAT|(% style="width:183px" %)(((

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Temperature(DS18B20)(PC13)

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)))|(% style="width:173px" %)(((

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Digital in(PB15) & Digital Interrupt(PA8)

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)))|(% style="width:84px" %)(((

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ADC(PA4)

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)))|(% style="width:323px" %)(((

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Distance measure by:1)TF-Mini plus LiDAR

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Or 2) TF-Luna LiDAR

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)))|(% style="width:188px" %)Distance signal strength

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656376779088-686.png?rev=1.1||alt="1656376779088-686.png"]]

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**Connection to [[TF-Mini plus>>url:http://en.benewake.com/product/detail/5c345cd0e5b3a844c472329b.html]] LiDAR(UART version):**

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(% style="color:red" %)**Need to remove R3 and R4 resistors to get low power,otherwise there will be 400uA standby current.**

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[[image:image-20230512180609-7.png||height="555" width="802"]]

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**Connection to [[TF-Luna>>url:http://en.benewake.com/product/detail/5e1c1fd04d839408076b6255.html]] LiDAR (UART version):**

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(% style="color:red" %)**Need to remove R3 and R4 resistors to get low power,otherwise there will be 400uA standby current.**

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[[image:image-20230610170047-1.png||height="452" width="799"]]

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==== 2.3.2.3 MOD~=3 (3 ADC + I2C) ====

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This mode has total 12 bytes. Include 3 x ADC + 1x I2C

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

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|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((

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**Size(bytes)**

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)))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 110px;background-color:#D9E2F3;color:#0070C0" %)2|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)2|=(% style="width: 20px;background-color:#D9E2F3;color:#0070C0" %)1

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|Value|(% style="width:68px" %)(((

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ADC1(PA4)

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)))|(% style="width:75px" %)(((

ADC2(PA5)

)))|(((

ADC3(PA8)

)))|(((

Digital Interrupt(PB15)

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)))|(% style="width:304px" %)(((

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Temperature(SHT20 or SHT31 or BH1750 Illumination Sensor)

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)))|(% style="width:163px" %)(((

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Humidity(SHT20 or SHT31)

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)))|(% style="width:53px" %)Bat

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[[image:image-20230513110214-6.png]]

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==== 2.3.2.4 MOD~=4 (3 x DS18B20) ====

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This mode has total 11 bytes. As shown below:

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

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|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**

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|Value|BAT|(% style="width:186px" %)(((

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Temperature1(DS18B20)(PC13)

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)))|(% style="width:82px" %)(((

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ADC(PA4)

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)))|(% style="width:210px" %)(((

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Digital in(PB15) & Digital Interrupt(PA8)

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)))|(% style="width:191px" %)Temperature2(DS18B20)

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(PB9)|(% style="width:183px" %)Temperature3(DS18B20)(PB8)

430

431

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656377606181-607.png?rev=1.1||alt="1656377606181-607.png"]]

432

433

434

[[image:image-20230513134006-1.png||height="559" width="736"]]

435

436

437

==== 2.3.2.5 MOD~=5(Weight Measurement by HX711) ====

438

439

440

[[image:image-20230512164658-2.png||height="532" width="729"]]

441

442

Each HX711 need to be calibrated before used. User need to do below two steps:

443

444

1. Zero calibration. Don't put anything on load cell and run (% style="color:blue" %)**AT+WEIGRE**(%%) to calibrate to Zero gram.

445

1. Adjust calibration factor (default value 400): Put a known weight thing on load cell and run (% style="color:blue" %)**AT+WEIGAP**(%%) to adjust the Calibration Factor.

446

1. (((

447

Weight has 4 bytes, the unit is g.

)))

For example:

(% style="color:blue" %)**AT+GETSENSORVALUE =0**

456

457

Response: Weight is 401 g

458

459

Check the response of this command and adjust the value to match the real value for thing.

460

461

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

462

|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((

463

**Size(bytes)**

464

)))|=(% style="width: 20px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 150px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 200px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**4**

465

|Value|BAT|(% style="width:193px" %)(((

466

Temperature(DS18B20)(PC13)

467

)))|(% style="width:85px" %)(((

468

ADC(PA4)

469

)))|(% style="width:186px" %)(((

470

Digital in(PB15) & Digital Interrupt(PA8)

471

)))|(% style="width:100px" %)Weight

472

473

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220820120036-2.png?width=1003&height=469&rev=1.1||alt="image-20220820120036-2.png" height="469" width="1003"]]

474

475

476

==== 2.3.2.6 MOD~=6 (Counting Mode) ====

477

478

479

In this mode, the device will work in counting mode. It counts the interrupt on the interrupt pins and sends the count on TDC time.

480

481

Connection is as below. The PIR sensor is a count sensor, it will generate interrupt when people come close or go away. User can replace the PIR sensor with other counting sensors.

482

483

[[image:image-20230512181814-9.png||height="543" width="697"]]

484

485

486

(% style="color:red" %)**Note:** **LoRaWAN wireless transmission will infect the PIR sensor. Which cause the counting value increase +1 for every uplink. User can change PIR sensor or put sensor away of the SN50_v3 to avoid this happen.**

487

488

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

489

|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|=(% style="width: 40px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 180px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**4**

490

|Value|BAT|(% style="width:256px" %)(((

491

Temperature(DS18B20)(PC13)

492

)))|(% style="width:108px" %)(((

493

ADC(PA4)

494

)))|(% style="width:126px" %)(((

495

Digital in(PB15)

496

)))|(% style="width:145px" %)(((

Count(PA8)

)))

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378441509-171.png?rev=1.1||alt="1656378441509-171.png"]]

501

502

503

==== 2.3.2.7 MOD~=7 (Three interrupt contact modes) ====

504

505

506

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

507

|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((

508

**Size(bytes)**

509

)))|=(% style="width: 20px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)1|=(% style="width: 40px;background-color:#D9E2F3;color:#0070C0" %)2

510

|Value|BAT|(% style="width:188px" %)(((

511

Temperature(DS18B20)

512

(PC13)

513

)))|(% style="width:83px" %)(((

514

ADC(PA5)

515

)))|(% style="width:184px" %)(((

516

Digital Interrupt1(PA8)

517

)))|(% style="width:186px" %)Digital Interrupt2(PA4)|(% style="width:197px" %)Digital Interrupt3(PB15)|(% style="width:100px" %)Reserved

518

519

[[image:image-20230513111203-7.png||height="324" width="975"]]

520

521

522

==== 2.3.2.8 MOD~=8 （3ADC+1DS18B20） ====

523

524

525

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

526

|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((

527

**Size(bytes)**

528

)))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 110px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)2

529

|Value|BAT|(% style="width:207px" %)(((

530

Temperature(DS18B20)

531

(PC13)

532

)))|(% style="width:94px" %)(((

533

ADC1(PA4)

534

)))|(% style="width:198px" %)(((

535

Digital Interrupt(PB15)

536

)))|(% style="width:84px" %)(((

537

ADC2(PA5)

538

)))|(% style="width:82px" %)(((

ADC3(PA8)

)))

[[image:image-20230513111231-8.png||height="335" width="900"]]

543

544

545

==== 2.3.2.9 MOD~=9 (3DS18B20+ two Interrupt count mode) ====

546

547

548

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)

549

|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((

550

**Size(bytes)**

551

)))|=(% style="width: 20px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)4|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)4

|Value|BAT|(((

Temperature

(DS18B20)(PC13)

)))|(((

Temperature2

(DS18B20)(PB9)

)))|(((

Digital Interrupt

(PB15)

)))|(% style="width:193px" %)(((

562

Temperature3

563

(DS18B20)(PB8)

564

)))|(% style="width:78px" %)(((

565

Count1(PA8)

566

)))|(% style="width:78px" %)(((

Count2(PA4)

)))

[[image:image-20230513111255-9.png||height="341" width="899"]]

571

572

(% style="color:blue" %)**The newly added AT command is issued correspondingly:**

573

574

(% style="color:#037691" %)** AT+INTMOD1 PA8**(%%) pin： Corresponding downlink: (% style="color:#037691" %)**06 00 00 xx**

575

576

(% style="color:#037691" %)** AT+INTMOD2 PA4**(%%) pin： Corresponding downlink: (% style="color:#037691" %)**06 00 01 xx**

577

578

(% style="color:#037691" %)** AT+INTMOD3 PB15**(%%) pin： Corresponding downlink: (% style="color:#037691" %)** 06 00 02 xx**

579

580

581

(% style="color:blue" %)**AT+SETCNT=aa,bb**

582

583

When AA is 1, set the count of PA8 pin to BB Corresponding downlink：09 01 bb bb bb bb

584

585

When AA is 2, set the count of PA4 pin to BB Corresponding downlink：09 02 bb bb bb bb

586

587

588

=== 2.3.3 Decode payload ===

589

590

591

While using TTN V3 network, you can add the payload format to decode the payload.

592

593

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378466788-734.png?rev=1.1||alt="1656378466788-734.png"]]

594

595

The payload decoder function for TTN V3 are here:

596

597

SN50v3-LB TTN V3 Payload Decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>url:https://github.com/dragino/dragino-end-node-decoder]]

598

599

600

==== 2.3.3.1 Battery Info ====

601

602

603

Check the battery voltage for SN50v3-LB.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

==== 2.3.3.2 Temperature (DS18B20) ====

611

612

613

If there is a DS18B20 connected to PC13 pin. The temperature will be uploaded in the payload.

614

615

More DS18B20 can check the [[3 DS18B20 mode>>||anchor="H2.3.2.4MOD3D4283xDS18B2029"]]

616

617

(% style="color:blue" %)**Connection:**

618

619

[[image:image-20230512180718-8.png||height="538" width="647"]]

620

621

622

(% style="color:blue" %)**Example**:

623

624

If payload is: 0105H: (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree

625

626

If payload is: FF3FH : (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.

627

628

（FF3F & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）

629

630

631

==== 2.3.3.3 Digital Input ====

632

633

634

The digital input for pin PB15,

635

636

* When PB15 is high, the bit 1 of payload byte 6 is 1.

637

* When PB15 is low, the bit 1 of payload byte 6 is 0.

638

639

(% class="wikigeneratedid" id="H2.3.3.4A0AnalogueDigitalConverter28ADC29" %)

640

(((

641

When the digital interrupt pin is set to AT+INTMODx=0, this pin is used as a digital input pin.

642

643

(% style="color:red" %)**Note: The maximum voltage input supports 3.6V.**

)))

==== 2.3.3.4 Analogue Digital Converter (ADC) ====

649

650

651

The measuring range of the ADC is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.

652

653

When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.

654

655

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220628150112-1.png?width=285&height=241&rev=1.1||alt="image-20220628150112-1.png" height="241" width="285"]]

656

657

658

(% style="color:red" %)**Note: If the ADC type sensor needs to be powered by SN50_v3, it is recommended to use +5V to control its switch.Only sensors with low power consumption can be powered with VDD.**

659

660

661

The position of PA5 on the hardware after **LSN50 v3.3** is changed to the position shown in the figure below, and the collected voltage becomes one-sixth of the original.

662

663

[[image:image-20230811113449-1.png||height="370" width="608"]]

664

665

==== 2.3.3.5 Digital Interrupt ====

666

667

668

Digital Interrupt refers to pin PA8, and there are different trigger methods. When there is a trigger, the SN50v3-LB will send a packet to the server.

669

670

(% style="color:blue" %)** Interrupt connection method:**

671

672

[[image:image-20230513105351-5.png||height="147" width="485"]]

673

674

675

(% style="color:blue" %)**Example to use with door sensor :**

676

677

The door sensor is shown at right. It is a two wire magnetic contact switch used for detecting the open/close status of doors or windows.

678

679

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379210849-860.png?rev=1.1||alt="1656379210849-860.png"]]

680

681

When the two pieces are close to each other, the 2 wire output will be short or open (depending on the type), while if the two pieces are away from each other, the 2 wire output will be the opposite status. So we can use SN50v3-LB interrupt interface to detect the status for the door or window.

682

683

684

(% style="color:blue" %)**Below is the installation example:**

685

686

Fix one piece of the magnetic sensor to the door and connect the two pins to SN50v3-LB as follows:

687

688

* (((

689

One pin to SN50v3-LB's PA8 pin

690

)))

691

* (((

692

The other pin to SN50v3-LB's VDD pin

693

)))

694

695

Install the other piece to the door. Find a place where the two pieces will be close to each other when the door is closed. For this particular magnetic sensor, when the door is closed, the output will be short, and PA8 will be at the VCC voltage.

696

697

Door sensors have two types: (% style="color:blue" %)** NC (Normal close)**(%%) and (% style="color:blue" %)**NO (normal open)**(%%). The connection for both type sensors are the same. But the decoding for payload are reverse, user need to modify this in the IoT Server decoder.

698

699

When door sensor is shorted, there will extra power consumption in the circuit, the extra current is 3v3/R14 = 3v3/1Mohm = 3uA which can be ignored.

700

701

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379283019-229.png?rev=1.1||alt="1656379283019-229.png"]]

702

703

The above photos shows the two parts of the magnetic switch fitted to a door.

704

705

The software by default uses the falling edge on the signal line as an interrupt. We need to modify it to accept both the rising edge (0v ~-~-> VCC , door close) and the falling edge (VCC ~-~-> 0v , door open) as the interrupt.

The command is:

(% style="color:blue" %)**AT+INTMOD1=1 ** (%%) ~/~/ (more info about INMOD please refer** **[[**AT Command Manual**>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/&file=DRAGINO_LSN50_AT_Commands_v1.5.1.pdf]]**. **)

710

711

Below shows some screen captures in TTN V3:

712

713

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379339508-835.png?rev=1.1||alt="1656379339508-835.png"]]

714

715

716

In **MOD=1**, user can use byte 6 to see the status for door open or close. TTN V3 decoder is as below:

717

718

door= (bytes[6] & 0x80)? "CLOSE":"OPEN";

719

720

721

==== 2.3.3.6 I2C Interface (SHT20 & SHT31) ====

722

723

724

The SDA and SCK are I2C interface lines. You can use these to connect to an I2C device and get the sensor data.

725

726

We have made an example to show how to use the I2C interface to connect to the SHT20/ SHT31 Temperature and Humidity Sensor.

727

728

(% style="color:red" %)**Notice: Different I2C sensors have different I2C commands set and initiate process, if user want to use other I2C sensors, User need to re-write the source code to support those sensors. SHT20/ SHT31 code in SN50v3-LB will be a good reference.**

729

730

731

Below is the connection to SHT20/ SHT31. The connection is as below:

732

733

[[image:image-20230610170152-2.png||height="501" width="846"]]

734

735

736

The device will be able to get the I2C sensor data now and upload to IoT Server.

737

738

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379664142-345.png?rev=1.1||alt="1656379664142-345.png"]]

739

740

Convert the read byte to decimal and divide it by ten.

**Example:**

Temperature: Read:0116(H) = 278(D) Value: 278 /10=27.8℃;

745

746

Humidity: Read:0248(H)=584(D) Value: 584 / 10=58.4, So 58.4%

747

748

If you want to use other I2C device, please refer the SHT20 part source code as reference.

749

750

751

==== 2.3.3.7 Distance Reading ====

752

753

754

Refer [[Ultrasonic Sensor section>>||anchor="H2.3.3.8UltrasonicSensor"]].

755

756

757

==== 2.3.3.8 Ultrasonic Sensor ====

758

759

760

This Fundamental Principles of this sensor can be found at this link: [[https:~~/~~/wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU~~_~~__SEN0208>>url:https://wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU___SEN0208]]

761

762

The SN50v3-LB detects the pulse width of the sensor and converts it to mm output. The accuracy will be within 1 centimeter. The usable range (the distance between the ultrasonic probe and the measured object) is between 24cm and 600cm.

763

764

The working principle of this sensor is similar to the (% style="color:blue" %)**HC-SR04**(%%) ultrasonic sensor.

765

766

The picture below shows the connection:

767

768

[[image:image-20230512173903-6.png||height="596" width="715"]]

769

770

771

Connect to the SN50v3-LB and run (% style="color:blue" %)**AT+MOD=2**(%%) to switch to ultrasonic mode (ULT).

772

773

The ultrasonic sensor uses the 8^^th^^ and 9^^th^^ byte for the measurement value.

**Example:**

Distance: Read: 0C2D(Hex) = 3117(D) Value: 3117 mm=311.7 cm

778

779

780

==== 2.3.3.9 Battery Output - BAT pin ====

781

782

783

The BAT pin of SN50v3-LB is connected to the Battery directly. If users want to use BAT pin to power an external sensor. User need to make sure the external sensor is of low power consumption. Because the BAT pin is always open. If the external sensor is of high power consumption. the battery of SN50v3-LB will run out very soon.

784

785

786

==== 2.3.3.10 +5V Output ====

787

788

789

SN50v3-LB will enable +5V output before all sampling and disable the +5v after all sampling.

790

791

The 5V output time can be controlled by AT Command.

792

793

(% style="color:blue" %)**AT+5VT=1000**

794

795

Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.

796

797

By default the **AT+5VT=500**. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.

798

799

800

==== 2.3.3.11 BH1750 Illumination Sensor ====

801

802

803

MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes.

804

805

[[image:image-20230512172447-4.png||height="416" width="712"]]

806

807

808

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628110012-12.png?rev=1.1||alt="image-20220628110012-12.png" height="361" width="953"]]

809

810

811

==== 2.3.3.12 Working MOD ====

812

813

814

The working MOD info is contained in the Digital in & Digital Interrupt byte (7^^th^^ Byte).

815

816

User can use the 3^^rd^^ ~~ 7^^th^^ bit of this byte to see the working mod:

817

818

Case 7^^th^^ Byte >> 2 & 0x1f:

* 0: MOD1

* 1: MOD2

* 2: MOD3

* 3: MOD4

* 4: MOD5

* 5: MOD6

* 6: MOD7

* 7: MOD8

* 8: MOD9

== 2.4 Payload Decoder file ==

833

834

835

In TTN, use can add a custom payload so it shows friendly reading

836

837

In the page (% style="color:#037691" %)**Applications ~-~-> Payload Formats ~-~-> Custom ~-~-> decoder**(%%) to add the decoder from:

838

839

[[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/SN50_v3-LB>>https://github.com/dragino/dragino-end-node-decoder/tree/main/SN50_v3-LB]]

840

841

842

== 2.5 Frequency Plans ==

843

844

845

The SN50v3-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.

846

847

[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]

848

849

850

= 3. Configure SN50v3-LB =

851

852

== 3.1 Configure Methods ==

853

854

855

SN50v3-LB supports below configure method:

856

857

* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].

858

* AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].

859

* LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.

== 3.2 General Commands ==

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865

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These commands are to configure:

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868

* General system settings like: uplink interval.

869

* LoRaWAN protocol & radio related command.

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871

They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:

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873

[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]

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875

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== 3.3 Commands special design for SN50v3-LB ==

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These commands only valid for SN50v3-LB, as below:

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=== 3.3.1 Set Transmit Interval Time ===

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884

885

Feature: Change LoRaWAN End Node Transmit Interval.

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(% style="color:blue" %)**AT Command: AT+TDC**

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

890

|=(% style="width: 156px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="background-color:#D9E2F3;color:#0070C0" %)**Response**

891

|(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((

892

30000

893

OK

894

the interval is 30000ms = 30s

895

)))

896

|(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((

897

OK

898

Set transmit interval to 60000ms = 60 seconds

899

)))

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901

(% style="color:blue" %)**Downlink Command: 0x01**

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903

Format: Command Code (0x01) followed by 3 bytes time value.

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If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.

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* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds

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* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds

=== 3.3.2 Get Device Status ===

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914

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Send a LoRaWAN downlink to ask the device to send its status.

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917

(% style="color:blue" %)**Downlink Payload: 0x26 01**

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919

Sensor will upload Device Status via **FPORT=5**. See payload section for detail.

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921

922

=== 3.3.3 Set Interrupt Mode ===

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Feature, Set Interrupt mode for GPIO_EXIT.

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(% style="color:blue" %)**AT Command: AT+INTMOD1，AT+INTMOD2，AT+INTMOD3**

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

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|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**

931

|(% style="width:154px" %)AT+INTMOD1=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((

932

0

933

OK

934

the mode is 0 =Disable Interrupt

935

)))

936

|(% style="width:154px" %)AT+INTMOD1=2|(% style="width:196px" %)(((

937

Set Transmit Interval

938

0. (Disable Interrupt),

939

~1. (Trigger by rising and falling edge)

940

2. (Trigger by falling edge)

941

3. (Trigger by rising edge)

942

)))|(% style="width:157px" %)OK

943

|(% style="width:154px" %)AT+INTMOD2=3|(% style="width:196px" %)(((

944

Set Transmit Interval

945

trigger by rising edge.

946

)))|(% style="width:157px" %)OK

947

|(% style="width:154px" %)AT+INTMOD3=0|(% style="width:196px" %)Disable Interrupt|(% style="width:157px" %)OK

948

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(% style="color:blue" %)**Downlink Command: 0x06**

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Format: Command Code (0x06) followed by 3 bytes.

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This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.

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* Example 1: Downlink Payload: 06000000 **~-~-->** AT+INTMOD1=0

956

* Example 2: Downlink Payload: 06000003 **~-~-->** AT+INTMOD1=3

957

* Example 3: Downlink Payload: 06000102 **~-~-->** AT+INTMOD2=2

958

* Example 4: Downlink Payload: 06000201 **~-~-->** AT+INTMOD3=1

=== 3.3.4 Set Power Output Duration ===

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Control the output duration 5V . Before each sampling, device will

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~1. first enable the power output to external sensor,

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2. keep it on as per duration, read sensor value and construct uplink payload

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3. final, close the power output.

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(% style="color:blue" %)**AT Command: AT+5VT**

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

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|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**

977

|(% style="width:154px" %)AT+5VT=?|(% style="width:196px" %)Show 5V open time.|(% style="width:157px" %)(((

500(default)

OK

)))

|(% style="width:154px" %)AT+5VT=1000|(% style="width:196px" %)(((

982

Close after a delay of 1000 milliseconds.

983

)))|(% style="width:157px" %)OK

984

985

(% style="color:blue" %)**Downlink Command: 0x07**

986

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Format: Command Code (0x07) followed by 2 bytes.

988

989

The first and second bytes are the time to turn on.

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* Example 1: Downlink Payload: 070000 **~-~-->** AT+5VT=0

992

* Example 2: Downlink Payload: 0701F4 **~-~-->** AT+5VT=500

=== 3.3.5 Set Weighing parameters ===

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Feature: Working mode 5 is effective, weight initialization and weight factor setting of HX711.

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1001

(% style="color:blue" %)**AT Command: AT+WEIGRE,AT+WEIGAP**

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1003

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

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|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**

1005

|(% style="width:154px" %)AT+WEIGRE|(% style="width:196px" %)Weight is initialized to 0.|(% style="width:157px" %)OK

1006

|(% style="width:154px" %)AT+WEIGAP=？|(% style="width:196px" %)400.0|(% style="width:157px" %)OK(default)

1007

|(% style="width:154px" %)AT+WEIGAP=400.3|(% style="width:196px" %)Set the factor to 400.3.|(% style="width:157px" %)OK

1008

1009

(% style="color:blue" %)**Downlink Command: 0x08**

1010

1011

Format: Command Code (0x08) followed by 2 bytes or 4 bytes.

1012

1013

Use AT+WEIGRE when the first byte is 1, only 1 byte. When it is 2, use AT+WEIGAP, there are 3 bytes.

1014

1015

The second and third bytes are multiplied by 10 times to be the AT+WEIGAP value.

1016

1017

* Example 1: Downlink Payload: 0801 **~-~-->** AT+WEIGRE

1018

* Example 2: Downlink Payload: 08020FA3 **~-~-->** AT+WEIGAP=400.3

1019

* Example 3: Downlink Payload: 08020FA0 **~-~-->** AT+WEIGAP=400.0

=== 3.3.6 Set Digital pulse count value ===

1024

1025

1026

Feature: Set the pulse count value.

1027

1028

Count 1 is PA8 pin of mode 6 and mode 9. Count 2 is PA4 pin of mode 9.

1029

1030

(% style="color:blue" %)**AT Command: AT+SETCNT**

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

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|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**

1034

|(% style="width:154px" %)AT+SETCNT=1,100|(% style="width:196px" %)Initialize the count value 1 to 100.|(% style="width:157px" %)OK

1035

|(% style="width:154px" %)AT+SETCNT=2,0|(% style="width:196px" %)Initialize the count value 2 to 0.|(% style="width:157px" %)OK

1036

1037

(% style="color:blue" %)**Downlink Command: 0x09**

1038

1039

Format: Command Code (0x09) followed by 5 bytes.

1040

1041

The first byte is to select which count value to initialize, and the next four bytes are the count value to be initialized.

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* Example 1: Downlink Payload: 090100000000 **~-~-->** AT+SETCNT=1,0

1044

* Example 2: Downlink Payload: 0902000003E8 **~-~-->** AT+SETCNT=2,1000

=== 3.3.7 Set Workmode ===

1049

1050

1051

Feature: Switch working mode.

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1053

(% style="color:blue" %)**AT Command: AT+MOD**

1054

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(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

1056

|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**

1057

|(% style="width:154px" %)AT+MOD=?|(% style="width:196px" %)Get the current working mode.|(% style="width:157px" %)(((

1058

OK

1059

)))

1060

|(% style="width:154px" %)AT+MOD=4|(% style="width:196px" %)Set the working mode to 3DS18B20s.|(% style="width:157px" %)(((

1061

OK

1062

Attention:Take effect after ATZ

1063

)))

1064

1065

(% style="color:blue" %)**Downlink Command: 0x0A**

1066

1067

Format: Command Code (0x0A) followed by 1 bytes.

1068

1069

* Example 1: Downlink Payload: 0A01 **~-~-->** AT+MOD=1

1070

* Example 2: Downlink Payload: 0A04 **~-~-->** AT+MOD=4

= 4. Battery & Power Consumption =

1075

1076

1077

SN50v3-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.

1078

1079

[[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .

1080

1081

1082

= 5. OTA Firmware update =

1083

1084

1085

(% class="wikigeneratedid" %)

1086

**User can change firmware SN50v3-LB to:**

1087

1088

* Change Frequency band/ region.

1089

* Update with new features.

1090

* Fix bugs.

1091

1092

**Firmware and changelog can be downloaded from :** **[[Firmware download link>>https://www.dropbox.com/sh/4rov7bcp6u28exp/AACt-wAySd4si5AXi8DBmvSca?dl=0]]**

1093

1094

**Methods to Update Firmware:**

1095

1096

* (Recommanded way) OTA firmware update via wireless: **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]**

1097

* Update through UART TTL interface: **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.

= 6. FAQ =

== 6.1 Where can i find source code of SN50v3-LB? ==

1104

1105

1106

* **[[Hardware Source Files>>https://github.com/dragino/Lora/tree/master/LSN50/v3.0]].**

1107

* **[[Software Source Code & Compile instruction>>https://github.com/dragino/SN50v3]].**

== 6.2 How to generate PWM Output in SN50v3-LB? ==

1112

1113

1114

See this document: **[[Generate PWM Output on SN50v3>>https://www.dropbox.com/scl/fi/r3trcet2knujg40w0mgyn/Generate-PWM-Output-on-SN50v3.pdf?rlkey=rxsgmrhhrv62iiiwjq9sv10bn&dl=0]]**.

1115

1116

1117

== 6.3 How to put several sensors to a SN50v3-LB? ==

1118

1119

1120

When we want to put several sensors to A SN50v3-LB, the waterproof at the grand connector will become an issue. User can try to exchange the grand connector to below type.

1121

1122

[[Reference Supplier>>https://www.yscableglands.com/cable-glands/nylon-cable-glands/cable-gland-rubber-seal.html]].

1123

1124

[[image:image-20230810121434-1.png||height="242" width="656"]]

= 7. Order Info =

Part Number: (% style="color:blue" %)**SN50v3-LB-XX-YY**

1131

1132

(% style="color:red" %)**XX**(%%): The default frequency band

1133

1134

* (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band

1135

* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band

1136

* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band

1137

* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band

1138

* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band

1139

* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band

1140

* (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band

1141

* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band

1142

1143

(% style="color:red" %)**YY: ** (%%)Hole Option

1144

1145

* (% style="color:red" %)**12**(%%): With M12 waterproof cable hole

1146

* (% style="color:red" %)**16**(%%): With M16 waterproof cable hole

1147

* (% style="color:red" %)**20**(%%): With M20 waterproof cable hole

1148

* (% style="color:red" %)**NH**(%%): No Hole

= 8. Packing Info =

(% style="color:#037691" %)**Package Includes**:

1156

1157

* SN50v3-LB LoRaWAN Generic Node

1158

1159

(% style="color:#037691" %)**Dimension and weight**:

* Device Size: cm

* Device Weight: g

* Package Size / pcs : cm

* Weight / pcs : g

= 9. Support =

* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.

1172

1173

* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.cc>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.cc]]

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