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)

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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"]]

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

478

479

480

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.

481

482

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.

483

484

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

485

486

487

(% 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.**

488

489

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

490

|=(% 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**

491

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

492

Temperature(DS18B20)(PC13)

493

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

494

ADC(PA4)

495

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

496

Digital in(PB15)

497

)))|(% 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"]]

502

503

504

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

505

506

507

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

508

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

509

**Size(bytes)**

510

)))|=(% 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

511

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

512

Temperature(DS18B20)

513

(PC13)

514

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

515

ADC(PA5)

516

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

517

Digital Interrupt1(PA8)

518

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

519

520

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

521

522

523

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

524

525

526

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

527

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

528

**Size(bytes)**

529

)))|=(% 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

530

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

531

Temperature(DS18B20)

532

(PC13)

533

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

534

ADC1(PA4)

535

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

536

Digital Interrupt(PB15)

537

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

538

ADC2(PA5)

539

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

ADC3(PA8)

)))

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

544

545

546

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

547

548

549

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

550

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

551

**Size(bytes)**

552

)))|=(% 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" %)(((

563

Temperature3

564

(DS18B20)(PB8)

565

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

566

Count1(PA8)

567

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

Count2(PA4)

)))

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

572

573

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

574

575

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

576

577

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

578

579

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

580

581

582

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

583

584

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

585

586

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

587

588

589

=== 2.3.3 Decode payload ===

590

591

592

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

593

594

[[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"]]

595

596

The payload decoder function for TTN V3 are here:

597

598

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

599

600

601

==== 2.3.3.1 Battery Info ====

602

603

604

Check the battery voltage for SN50v3-LB.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

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

612

613

614

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

615

616

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

617

618

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

619

620

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

621

622

623

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

624

625

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

626

627

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

628

629

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

630

631

632

==== 2.3.3.3 Digital Input ====

633

634

635

The digital input for pin PB15,

636

637

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

638

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

639

640

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

641

(((

642

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

643

644

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

)))

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

650

651

652

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

653

654

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.

655

656

[[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"]]

657

658

659

(% 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.**

660

661

662

==== 2.3.3.5 Digital Interrupt ====

663

664

665

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.

666

667

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

668

669

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

670

671

672

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

673

674

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.

675

676

[[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"]]

677

678

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.

679

680

681

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

682

683

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

684

685

* (((

686

One pin to SN50v3-LB's PA8 pin

687

)))

688

* (((

689

The other pin to SN50v3-LB's VDD pin

690

)))

691

692

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.

693

694

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.

695

696

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.

697

698

[[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"]]

699

700

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

701

702

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]]**. **)

707

708

Below shows some screen captures in TTN V3:

709

710

[[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"]]

711

712

713

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

714

715

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

716

717

718

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

719

720

721

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

722

723

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

724

725

(% 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.**

726

727

728

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

729

730

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

731

732

733

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

734

735

[[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"]]

736

737

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

**Example:**

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

742

743

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

744

745

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

746

747

748

==== 2.3.3.7 Distance Reading ====

749

750

751

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

752

753

754

==== 2.3.3.8 Ultrasonic Sensor ====

755

756

757

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]]

758

759

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.

760

761

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

762

763

The picture below shows the connection:

764

765

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

766

767

768

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

769

770

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

775

776

777

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

778

779

780

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.

781

782

783

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

784

785

786

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

787

788

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

789

790

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

791

792

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

793

794

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.

795

796

797

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

798

799

800

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

801

802

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

803

804

805

[[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"]]

806

807

808

==== 2.3.3.12 Working MOD ====

809

810

811

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

812

813

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

814

815

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 ==

830

831

832

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

833

834

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

835

836

[[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]]

837

838

839

== 2.5 Frequency Plans ==

840

841

842

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.

843

844

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

845

846

847

= 3. Configure SN50v3-LB =

848

849

== 3.1 Configure Methods ==

850

851

852

SN50v3-LB supports below configure method:

853

854

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

855

* 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]].

856

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

== 3.2 General Commands ==

861

862

863

These commands are to configure:

864

865

* General system settings like: uplink interval.

866

* LoRaWAN protocol & radio related command.

867

868

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

869

870

[[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/]]

871

872

873

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

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875

876

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

877

878

879

=== 3.3.1 Set Transmit Interval Time ===

880

881

882

Feature: Change LoRaWAN End Node Transmit Interval.

883

884

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

885

886

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

887

|=(% 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**

888

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

889

30000

890

OK

891

the interval is 30000ms = 30s

892

)))

893

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

894

OK

895

Set transmit interval to 60000ms = 60 seconds

896

)))

897

898

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

899

900

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

901

902

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

903

904

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

905

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

=== 3.3.2 Get Device Status ===

910

911

912

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

913

914

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

915

916

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

917

918

919

=== 3.3.3 Set Interrupt Mode ===

920

921

922

Feature, Set Interrupt mode for GPIO_EXIT.

923

924

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

925

926

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

927

|=(% 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**

928

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

929

0

930

OK

931

the mode is 0 =Disable Interrupt

932

)))

933

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

934

Set Transmit Interval

935

0. (Disable Interrupt),

936

~1. (Trigger by rising and falling edge)

937

2. (Trigger by falling edge)

938

3. (Trigger by rising edge)

939

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

940

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

941

Set Transmit Interval

942

trigger by rising edge.

943

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

944

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

945

946

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

947

948

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

949

950

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

951

952

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

953

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

954

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

955

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

=== 3.3.4 Set Power Output Duration ===

960

961

962

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

963

964

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

965

966

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

967

968

3. final, close the power output.

969

970

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

971

972

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

973

|=(% 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**

974

|(% 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" %)(((

979

Close after a delay of 1000 milliseconds.

980

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

981

982

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

983

984

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

985

986

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

987

988

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

989

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

=== 3.3.5 Set Weighing parameters ===

994

995

996

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

997

998

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

999

1000

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

1001

|=(% 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**

1002

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

1003

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

1004

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

1005

1006

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

1007

1008

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

1009

1010

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

1011

1012

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

1013

1014

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

1015

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

1016

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

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

1021

1022

1023

Feature: Set the pulse count value.

1024

1025

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

1026

1027

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

1028

1029

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

1030

|=(% 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**

1031

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

1032

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

1033

1034

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

1035

1036

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

1037

1038

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

1039

1040

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

1041

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

=== 3.3.7 Set Workmode ===

1046

1047

1048

Feature: Switch working mode.

1049

1050

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

1051

1052

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

1053

|=(% 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**

1054

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

1055

OK

1056

)))

1057

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

1058

OK

1059

Attention:Take effect after ATZ

1060

)))

1061

1062

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

1063

1064

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

1065

1066

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

1067

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

= 4. Battery & Power Consumption =

1072

1073

1074

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

1075

1076

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

1077

1078

1079

= 5. OTA Firmware update =

1080

1081

1082

(% class="wikigeneratedid" %)

1083

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

1084

1085

* Change Frequency band/ region.

1086

* Update with new features.

1087

* Fix bugs.

1088

1089

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

1090

1091

**Methods to Update Firmware:**

1092

1093

* (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/]]**

1094

* 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? ==

1101

1102

1103

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

1104

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

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

1109

1110

1111

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]]**.

1112

1113

1114

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

1115

1116

1117

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.

1118

1119

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

1120

1121

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

= 7. Order Info =

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

1128

1129

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

1130

1131

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

1132

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

1133

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

1134

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

1135

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

1136

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

1137

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

1138

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

1139

1140

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

1141

1142

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

1143

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

1144

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

1145

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

= 8. Packing Info =

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

1153

1154

* SN50v3-LB LoRaWAN Generic Node

1155

1156

(% 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.

1167

1168

* 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]]

Wiki source code of SN50v3-LB LoRaWAN Sensor Node User Manual

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