ESP32 LoRa APRS Modem
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README.md

ESP32 LoRa APRS Modem

Modes of operation

This project is amateur radio ESP32 based LoRa KISS Bluetooth/BLE/USB/TCPIP modem + LoRa APRS-IS RX/TX iGate server over WiFI + LoRa APRS digipeater + Codec2 DV modem (with Codec2 Talkie Android application).

To configure sketch modify default parameters in config.h file.

⚠ Project also supports APRSDroid TNC2 text APRS packet mode (configurable), which makes it interoperable with other LoRa APRS trackers without AX25 support.

Supported module types: SX126X, SX127X and other modules supported by RadioLib.

Modules, which are used by users and known to work

  • SX126X (suggested, 1W modules will provide decent coverage for APRS, stable frequency suitable for < 125 kHz BW at 433 MHz, 5V from USB power bank is enough to power it, have additional LNA)
    • E22-400M30S (SX1268)
    • E220-400M30S (LLCC68) BW125 SF from 7 to 9 (chip limitations)
  • SX127X (low power)
    • RA-01 (SX1278)
    • RA-02 (SX1276)
    • TTGO T-Beam (SX1276)

Dependencies

Install via libraries:

Development board

Development board schematics and case model is available at https://github.com/sh123/lora_tracker

Modes of operation