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Charles edited this page Dec 18, 2021 · 2 revisions

The project is hardware-dependent. The system has two parts: onboard transmitter and receiver.

Both transmitter and receiver use an Arduino compatible, ESP32 based, LoRa enabled development board made by HelTec Automation. The model number is WiFi LoRa 32 (V2), and the product information can be found on HelTec's website.

The board supports LoRa, WiFi, Bluetooth, and has integrated Li-PO management. It was picked because all of the built-in capabilities would substantially simplify our development cycle and ensure that all of our design criteria are met. Furthermore, it is quite inexpensive ($25).

The transmitter is interfaced via i2c protocol with a BerryGPS Board which provides a suite of sensors including:

  • Gyroscope - LSM6DSL
  • Accelerometer - LSM6DSL
  • Magnetometer - LIS3MDL
  • Barometric and Temperature Sensor BMP388
  • GPS - uBlox CAM-M8

The data is subsequently transferred to the receiver through LoRa, which prints it out over the serial interface.

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