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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project

http://wiki.dragino.com/index.php?title=Lora_Sensor_Node-LSN50 1/17

INTRODUCTION

Dragino LoRa Sensor Node

What is the LSN50

LSN50 is a Long Range LoRa Sensor Node. It is designed for outdoor use and powered by Li/SOCl2 battery for long term use

power consumption and secure data transmission.It 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.

It is based on SX1276/SX1278 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.

LSN50 uses STM32l0x chip from ST, STML0x is the ultra-low-power STM32L072xx microcontrollers incorporate the

connectivity power of the universal serial bus (USB 2.0 crystal-less) with the high-performance ARM® Cortex®-M0+ 32-bit RISC

core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (192 Kbytes of Flash

program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.

LSN50 is an open source product, it is based on the STM32Cube HAL drivers and lots of libraries can be found in ST site for

rapid development.

Summary of content (17 pages)

PAGE 1
2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project INTRODUCTION Dragino LoRa Sensor Node Dragino LoRa Sensor Node What is the LSN50 LSN50 is a Long Range LoRa Sensor Node. It is designed for outdoor use and powered by Li/SOCl2 battery for long term use power consumption and secure data transmission.It is designed to facilitate developers to quickly deploy industrial level LoRa and IoT solutions.
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/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project STM32l0x The maximum link budget is 157 dB +20 dBm, 100 mW constant RF output with Vsupply +14 dBm high efficiency PA Programmable bit rates up to 300 k High sensitivity: down to -137 dBm Bulletproof front end: IIP3 = -12.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Specifications MCU Side: MCU: STM32L072CZT6 Flash:192KB RAM:20KB EEPROM: 6KB Clock Speed: 32Mhz LoRa Side: LoRa Chip: sx1276/sx1278 68 dB maximum link budget. +20 dBm - 100 mW constant RF output vs. +14 dBm high efficiency PA. Programmable bit rate up to 300 kbps. High sensitivity: down to -148 dBm. Bullet-proof front end: IIP3 = -12.5 dBm. 127 dB Dynamic Range RSSI. LoRaWAN 1.0.2 Specification Absolute Maximum Ratings: I/O pins: 0.5v ~ VCC+0.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Baud rate configurable CN470/EU433/KR920/US915 EU868/AS923/AU915 Open source hardware / software Available Band:433/868/915/920 Mhz IP66 Waterproof Enclosure Ultra Low Power consumption AT Commands to change parameters 4000mAh Battery for long term use Applications Wireless Alarm and Security Systems Home and Building Automation Automated Meter Reading Industrial Monitoring and Control Long range Irrigation Systems,etc.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Use the AT Command steps 1. http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project 3. Open application Seral port and click Start http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project You can see the status of the interface(If it does not appear, press the reset button or the AT command: ATZ.) 5. Input commands: Ex)AT+ADR=0（Adaptive rate is off）.If your AT command is sent successfully, the software will receive feedback (OK). Tips:If you want to know the more commands,you can send: AT+?.) Program LSN50 Download Flashloader (Here is just sample application.You can also use the same type of programming application.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Result http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Current consumption test in "Stop mode" mode Remove the jumper from JP2, connect with a multimeter, and hit 20uA. Pin Definition http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Case Study 1: With Oil Sensor Schematic The Oil Sensor is a sliding variable resistance, floating through the float above the circuit to change the size of the resistance. http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Connection steps http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project http://wiki.dragino.com/index.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Calculation method Only for our LSN50 such as: (TTN ) The value of the first two above is 00 00, which is 0 H = 0 * 3.0 * 1000 / (3.0 * 4095) (mm) If (TTN ) data = 00 10 is 16 H = 16 * 3.0 * 1000 / (3.0 * 4095) (mm) Case Study 2: With DS18B20 Temperature Sensor Schematic DS18B20 Temperature range is -55~125℃. The delay time when the temperature changes is 750ms.Temperature measurement error is 0.5 ℃. The programmable resolution is 9~12 bits.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Calculation method The DS18B20 is configured as 12 bits at factory shipment. When reading the temperature, a total of 16 bits are read. The first 5 bits are sign bits. When the current 5 bits are 1, the read temperature is negative. When the current 5 bits are 0, Take the temperature is positive. When the temperature is positive read method: the hexadecimal number can be converted into decimal.
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2/13/2018 Lora Sensor Node-LSN50 - Wiki for Dragino Project Order Infomation Order Info- LSN50-XX-YY XX: 433: Best Tuned at 433Mhz 868: Best Tuned at 868Mhz 915: Best Tuned at 915/920 Mhz YY: 12: With M12 waterproof cable hole 16: With M16 waterproof cable hole 20: With M20 waterproof cable hole http://wiki.dragino.com/index.