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The Dragino LoRaWAN GPS Tracker LGT-92 is an open source GPS tracker based on the Ultra Low Power STM32L072 MCU and the SX1276/1278 LoRa Module.
The LGT-92 includes a low power GPS module L70 and a 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 applications.
This is the LGT-92-LI, powered by 1000mA rechargeable Li-ion battery and with a charge circuit, targetting for real time tracking with short tracking uplink.
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.
Features:
- LoRaWAN 1.0.3 compliant
- Regular/ Real-time GPS tracking
- Built-in 9 axis accelerometer
- Motion sensing capability
- Power Monitoring
- Charging chip with USB port
- 1000mA Li-on Battery power
- Tri-color LED, Alarm button
- Band: EU868
- AT Commands to change parameters
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
- Tracking: max: 38mA
- LoRa Transmit: 24 ~ 150mA
Documents:
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