LORA GPS TRACKER (LGT-92)

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 L76-L 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.

Specification LORA GPS TRACKER (LGT-92):

System:

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

GPS,L76-L:

• 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