Products - Enthu Technology Solutions India Pvt. Ltd

LoRa Sensor Node (Waterproof)

LoRa Sensor Node (Waterproof)




Overview

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.

Technical Specificatons:

LoRa Spec

    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 Spec

    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: 4000mAh
    Self Discharge: <1% / Year @ 25°C
    Max continuously current: 130mA
    Max boost current: 2A, 1 second