thisisnttheway/esp32_lora_gps_beacon

LoRa GPS beacon based on an ESP32.

esp32_lora_beacon

LoRa beacon based on a Heltec 'WiFi_LoRa_32_v2' board.

Utilizes the following libraries:

• TTN_32: https://github.com/rgot-org/TheThingsNetwork_esp32
  • Implements an interface with TTN and the LoRa module.
  • Incorporates CayenneLPP as well!
• Heltec_ESP32: https://github.com/HelTecAutomation/Heltec_ESP32
  • Mainly for interfacing with the onboard OLED screen.
• TinyGPS++: http://arduiniana.org/libraries/tinygpsplus/
  • For parsing NMEA messages.

Intent

The purpose of this project is to build a GPS tracker that communicates with 'The Things Network', based on LoRa tech.
Can also be used as a TTN coverage mapper.

(If used as such, be aware that the produced data will have less priority as it is in the CayenneLPP format!)

Hardware

Technically, any ESP32 based dev board will work with this project:
As long as access to UART1/UART2 is guaranteed, the board can be used.

If an external LoRa module is used, make sure that it is compatible with the TTN_32 library!

Any GPS module will work, as long as it's able to spit out NMEA messages directly.
(I.e. doesn't produce data that can't be parsed by TinyGPS++.)

Notes

The UART2 RX pin is set to 23 instead of the standard 16, because on heltec this pin is used by OLED_RST already.
This has distorted the GPS output to the point of it becoming unusable. (YMMV)