Dragino LGT92 LoRaWAN GPS Tracker with 9-axis accelerometer EU868

The Dragino LoRaWAN GPS Tracker LGT-92 is an open source GPS tracker base on Ultra Low Power STM32L072 MCU and SX1276/1278 LoRa Module.

LGT-92 includes a low power GPS module L70 and 9-axis accelerometer for motion and attitude detection. The power for both of the GPS module and accelerometer can be controlled by MCU to achieve the best energy profile for different applications.

The LoRa wireless technology used in LGT-92 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 tracking service.

LGT-92 series products include two major variants:

    LGT-92-LI: is powered by 1000mA rechargeable Li-on battery and charge circuit, which target for real time tracking with short tracking uplink.
    LGT-92-AA: Disable the charge circuit to get the lowest power consumption and power directly by AA batteries. This is designed for asset tracking where only need to uplink a few times every day.

LGT-92 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.

Specifications:

System:

    STM32L072CZT6
    Flash:192KB
    RAM:20KB
    EEPROM:6KB

GPS,L70R:

    Acquisition: 16mA
    Tracking: 13mA
    Cold Start: <35s
    8uA@Backup Mode
    Warm Start: <30s
    Accuracy: < 2.5m CEP
    ReHot Start: <1s

Accelerometer:

    MPU9250 9-axis
    triple-axis MEMS gyroscope
    triple-axis MEMS accelerometer
    triple-axis MEMS magnetometer
    3.5mA operating current

Power Comsuption:

    Sleeping Mode: 77uA  (for LGT-92-LI),  3uA (for LGT-92-AA)
    Tracking: max: 38mA
    LoRa Transmit: 24 ~ 150mA

Features:

    LoRaWAN 1.0.3 compliant
    Regular/ Real-time GPS tracking
    Built-in 9 axis accelerometer
    Motion sensing capability
    Power Monitoring
    Charging clip with USB port  (for LGT-92-LI)
    1000mA Li-on Battery power (for LGT-92-LI)
    2 x AA battery holder (for model LGT-92-AA)
    Tri-color LED, Alarm button
    Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
    AT Commands to change parameters

 
Applications:

    Logistics and Supply Chain Management
    Smart Cities
    Smart Factory