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

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== 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

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== 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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)))

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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.

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== 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-20230513102034-2.png]]

== 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]]

== Hole Option ==

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 S31x-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 to send device configure detail, include device configure status. SN50v3 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, 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 has different working mode for the connections of different type of sensors. This section describes these modes. Use can use the AT Command AT+MOD to set SN50v3 to different working modes.

For example:

**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 **DR0**. Server sides will see NULL payload while SN50v3 transmit in DR0 with 12 bytes payload.

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

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1. 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="width:50px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="width:20px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:100px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:90px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:130px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:90px;background-color:#D9E2F3;color:#0070C0" %)**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="width:40px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:110px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:110px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:140px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**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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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="width:50px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="width:20px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:100px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:100px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:50px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:120px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:80px;background-color:#D9E2F3;color:#0070C0" %)**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

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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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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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Need to remove R3 and R4 resistors to get low power,otherwise there will be 400uA standby current.

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[[image:image-20230513105207-4.png||height="469" width="802"]]

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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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|=(((

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(% style="width: 50px;" %)**Size(bytes)**

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

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ADC1

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(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

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(SHT20 or SHT31 or BH1750 Illumination Sensor)

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

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Humidity

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(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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(% style="width:1017px" %)

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

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Temperature1(DS18B20)

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(PC13)

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

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ADC

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(PA4)

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

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Digital in(PB15) &

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Digital Interrupt(PA8)

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

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

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(PB8)

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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/1656377606181-607.png?rev=1.1||alt="1656377606181-607.png"]]

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

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

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

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

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1. Zero calibration. Don't put anything on load cell and run **AT+WEIGRE** to calibrate to Zero gram.

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

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1. (((

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Weight has 4 bytes, the unit is g.

)))

For example:

**AT+GETSENSORVALUE =0**

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Response: Weight is 401 g

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

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(% style="width:767px" %)

|=(((

**Size(bytes)**

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

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Temperature(DS18B20)

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(PC13)

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

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ADC

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(PA4)

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

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Digital in(PB15) &

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Digital Interrupt(PA8)

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

463

464

[[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"]]

465

466

467

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

468

469

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.

470

471

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.

472

473

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

474

475

**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.

476

477

(% style="width:961px" %)

478

479

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

Temperature(DS18B20)

(PC13)

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

484

ADC

485

(PA4)

486

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

487

Digital in

488

(PB15)

489

)))|(% 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"]]

495

496

497

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

498

499

(% style="width:1108px" %)

|=(((

**Size(bytes)**

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

504

Temperature(DS18B20)

505

(PC13)

506

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

507

ADC

508

(PA5)

509

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

510

Digital Interrupt1(PA8)

511

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

512

513

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

514

515

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

516

517

(% style="width:922px" %)

|=(((

**Size(bytes)**

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

522

Temperature(DS18B20)

523

(PC13)

524

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

525

ADC1

526

(PA4)

527

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

528

Digital Interrupt(PB15)

529

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

530

ADC2

531

(PA5)

532

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

ADC3

(PA8)

)))

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

538

539

540

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

541

542

(% style="width:1010px" %)

543

|=(((

544

**Size(bytes)**

545

)))|=**2**|=**2**|=**2**|=**1**|=(% style="width: 193px;" %)**2**|=(% style="width: 78px;" %)4|=(% style="width: 78px;" %)4

546

|**Value**|BAT|(((

547

Temperature1(DS18B20)

548

(PC13)

549

)))|(((

550

Temperature2(DS18B20)

(PB9)

)))|(((

Digital Interrupt

(PB15)

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

556

Temperature3(DS18B20)

557

(PB8)

558

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

559

Count1

560

(PA8)

561

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

Count2

(PA4)

)))

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

567

568

**The newly added AT command is issued correspondingly:**

569

570

**~ AT+INTMOD1** ** PA8** pin： Corresponding downlink: **06 00 00 xx**

571

572

**~ AT+INTMOD2** **PA4** pin： Corresponding downlink:** 06 00 01 xx**

573

574

**~ AT+INTMOD3** **PB15** pin： Corresponding downlink: ** 06 00 02 xx**

**AT+SETCNT=aa,bb**

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

579

580

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

=== 2.3.3 Decode payload ===

585

586

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

587

588

[[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"]]

589

590

The payload decoder function for TTN V3 are here:

591

592

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

593

594

595

==== 2.3.3.1 Battery Info ====

596

597

Check the battery voltage for SN50v3.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

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

605

606

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

607

608

More DS18B20 can check the [[3 DS18B20 mode>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#2.3.4MOD3D4283xDS18B2029]]

**Connection:**

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

**Example**:

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

617

618

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

619

620

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

621

622

623

==== 2.3.3.3 Digital Input ====

624

625

The digital input for pin PB15,

626

627

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

628

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

629

630

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

631

(((

632

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

633

634

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

635

)))

636

637

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

638

639

The measuring range of the ADC is only about 0V to 1.1V The voltage resolution is about 0.24mv.

640

641

When the measured output voltage of the sensor is not within the range of 0V 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.

642

643

[[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"]]

644

645

(% 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.

646

647

648

==== 2.3.3.5 Digital Interrupt ====

649

650

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

651

652

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

653

654

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

655

656

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

657

658

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.

659

660

[[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"]]

661

662

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 SN50_v3 interrupt interface to detect the status for the door or window.

663

664

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

665

666

Fix one piece of the magnetic sensor to the door and connect the two pins to SN50_v3 as follows:

667

668

* (((

669

One pin to SN50_v3's PA8 pin

670

)))

671

* (((

672

The other pin to SN50_v3's VDD pin

673

)))

674

675

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.

676

677

Door sensors have two types: ** NC (Normal close)** and **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.

678

679

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.

680

681

[[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"]]

682

683

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

684

685

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]]**. **)

690

691

Below shows some screen captures in TTN V3:

692

693

[[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"]]

694

695

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

696

697

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

698

699

700

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

701

702

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

703

704

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

705

706

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 SN50_v3 will be a good reference.

707

708

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

709

710

711

[[image:image-20230513103633-3.png||height="448" width="716"]]

712

713

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

714

715

[[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"]]

716

717

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

**Example:**

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

722

723

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

724

725

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

726

727

728

==== 2.3.3.7 Distance Reading ====

729

730

Refer [[Ultrasonic Sensor section>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.8UltrasonicSensor]].

731

732

733

==== 2.3.3.8 Ultrasonic Sensor ====

734

735

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]]

736

737

The SN50_v3 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.

738

739

The working principle of this sensor is similar to the **HC-SR04** ultrasonic sensor.

740

741

The picture below shows the connection:

742

743

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

744

745

Connect to the SN50_v3 and run **AT+MOD=2** to switch to ultrasonic mode (ULT).

746

747

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

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

756

757

The BAT pin of SN50v3 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.

758

759

760

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

761

762

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

763

764

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

765

766

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

767

768

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

769

770

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.

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

775

776

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

777

778

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

779

780

[[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"]]

781

782

783

==== 2.3.3.12 Working MOD ====

784

785

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

786

787

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

788

789

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 ==

804

805

806

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

807

808

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

809

810

[[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]]

== 2.5 Frequency Plans ==

815

816

817

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.

818

819

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

820

821

822

= 3. Configure SN50v3-LB =

823

824

== 3.1 Configure Methods ==

825

826

827

SN50v3-LB supports below configure method:

828

829

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

830

* 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]].

831

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

832

833

== 3.2 General Commands ==

834

835

836

These commands are to configure:

837

838

* General system settings like: uplink interval.

839

* LoRaWAN protocol & radio related command.

840

841

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

842

843

[[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/]]

844

845

846

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

847

848

849

These commands only valid for S31x-LB, as below:

850

851

852

=== 3.3.1 Set Transmit Interval Time ===

853

854

Feature: Change LoRaWAN End Node Transmit Interval.

855

856

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

857

858

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

859

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

860

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

861

30000

862

OK

863

the interval is 30000ms = 30s

864

)))

865

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

866

OK

867

Set transmit interval to 60000ms = 60 seconds

868

)))

869

870

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

871

872

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

873

874

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

875

876

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

877

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

=== 3.3.2 Get Device Status ===

882

883

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

884

885

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

886

887

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

888

889

890

=== 3.3.3 Set Interrupt Mode ===

891

892

Feature, Set Interrupt mode for GPIO_EXIT.

893

894

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

895

896

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

897

|=(% style="width: 154px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 196px;background-color:#D9E2F3" %)**Function**|=(% style="width: 157px;background-color:#D9E2F3" %)**Response**

898

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

899

0

900

OK

901

the mode is 0 =Disable Interrupt

902

)))

903

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

904

Set Transmit Interval

905

0. (Disable Interrupt),

906

~1. (Trigger by rising and falling edge)

907

2. (Trigger by falling edge)

908

3. (Trigger by rising edge)

909

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

910

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

911

Set Transmit Interval

912

913

trigger by rising edge.

914

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

915

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

916

917

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

918

919

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

920

921

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

922

923

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

924

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

925

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

926

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

=== 3.3.4 Set Power Output Duration ===

931

932

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

933

934

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

935

936

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

937

938

3. final, close the power output.

939

940

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

941

942

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

943

|=(% style="width: 154px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 196px;background-color:#D9E2F3" %)**Function**|=(% style="width: 157px;background-color:#D9E2F3" %)**Response**

944

|(% 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" %)(((

949

Close after a delay of 1000 milliseconds.

950

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

951

952

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

953

954

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

955

956

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

957

958

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

959

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

=== 3.3.5 Set Weighing parameters ===

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965

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

966

967

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

968

969

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

970

|=(% style="width: 154px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 196px;background-color:#D9E2F3" %)**Function**|=(% style="width: 157px;background-color:#D9E2F3" %)**Response**

971

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

972

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

973

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

974

975

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

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977

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

978

979

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

980

981

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

982

983

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

984

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

985

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

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

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991

Feature: Set the pulse count value.

992

993

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

994

995

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

996

997

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

998

|=(% style="width: 154px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 196px;background-color:#D9E2F3" %)**Function**|=(% style="width: 157px;background-color:#D9E2F3" %)**Response**

999

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

1000

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

1001

1002

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

1003

1004

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

1005

1006

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

1007

1008

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

1009

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

=== 3.3.7 Set Workmode ===

1014

1015

Feature: Switch working mode.

1016

1017

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

1018

1019

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

1020

|=(% style="width: 154px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 196px;background-color:#D9E2F3" %)**Function**|=(% style="width: 157px;background-color:#D9E2F3" %)**Response**

1021

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

1022

OK

1023

)))

1024

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

1025

OK

1026

Attention:Take effect after ATZ

1027

)))

1028

1029

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

1030

1031

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

1032

1033

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

1034

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

= 4. Battery & Power Consumption =

1039

1040

1041

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

1042

1043

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

1044

1045

1046

= 5. OTA Firmware update =

1047

1048

1049

(% class="wikigeneratedid" %)

1050

User can change firmware SN50v3-LB to:

1051

1052

* Change Frequency band/ region.

1053

* Update with new features.

1054

* Fix bugs.

1055

1056

Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/kwqv57tp6pejias/AAAopYMATh1GM6fZ-VRCLrpDa?dl=0]]**

1057

1058

1059

Methods to Update Firmware:

1060

1061

* (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/]]

1062

* 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? ==

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1068

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

1069

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

= 7. Order Info =

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

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1076

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

1077

1078

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

1079

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

1080

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

1081

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

1082

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

1083

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

1084

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

1085

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

1086

1087

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

1088

1089

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

1090

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

1091

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

1092

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

= 8. Packing Info =

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

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1098

* SN50v3-LB LoRaWAN Generic Node

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1100

(% 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.

1111

1112

* 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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