Dragino LSN50V2 LoRaWAN Waterproof Long Range Sensor Node EU868 (8500mAh)

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

LSN50 wireless part 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 MCU part 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.

Features:

    STM32L072CZT6 MCU
    SX1276/78 LoRa Wireless Modem
    Pre-load with ISP bootloader
    I2C,LPUSART1,USB
    18 x Digital I/Os
    2 x 12bit ADC; 1 x 12bit DAC
    MCU wake up by UART or Interrupt
    LoRa™ Modem
    Preamble detection
    Baud rate configurable
    LoRaWAN 1.0.2 Specification
    Software base on STM32Cube HAL drivers
    Open source hardware / software
    Available Band:433/868/915/920 Mhz
    IP68 Waterproof Enclosure
    Ultra Low Power consumption
    AT Commands to setup parameters
    8500mAh Battery for Long term use

LoRa Specs:

    168 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.
    Excellent blocking immunity.
    Low RX current of 10.3 mA, 200 nA register retention.
    Fully integrated synthesizer with a resolution of 61 Hz.
    FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
    Built-in bit synchronizer for clock recovery.
    Preamble detection.
    127 dB Dynamic Range RSSI.
    Automatic RF Sense and CAD with ultra-fast AFC.
    Packet engine up to 256 bytes with CRC.
    Built-in temperature sensor and low battery indicator.

MCU Specs:

    MCU: STM32L072CZT6
    Flash:192KB
    SRAM:20KB
    EEPROM:6KB
    Clock Speed: 32Mhz

Absolute Maximum Ratings:

    VCC: 0.5v ~ 3.9v
    Operating Tempature: -40 ~ 85°C
    I/O pins: 0.5v ~ VCC+0.5V

Common DC Characteristics:

    Supply Voltage: 1.8v ~ 3.6v
    Operating Tempature: -40 ~ 85°C
    I/O pins: Refer STM32L072CZT6 datasheet

 Power Consumption:

    STOP Mode: 2.7μA @ 3.3v
    RX Mode: 7.2mA
    TX Mode: 125mA@ 20dbm

 Battery:

    Li/SOCI2 unchargable battery
    Capacity: 8500mAh
    Self Discharge: <1% / Year @ 25°C
    Max continuously current: 130mA
    Max boost current: 2A, 1 second