LoRaChat

A very basic sotware to allow chat between ESP32 LoRa nodes.

• Distributed, nodes can behave as repeaters
• Must run in old phones (Android 4.4)
• .html + .css in external files inside ESP32 to facilitate collaboration with designers

Installation

• Install ESP32 board in your Arduino IDE instructions
• Install ESP32FS Arduino plugin instructions
• Install AsyncTCP and ESPAsyncWebServer instructions ( use ESPAsyncServer latest version from github
• Install LoRa library link using the arduino library manager.

Development

All css + js + html are in the data/web folder

protocol the exchanged messages have the following format

stationId|sender|payload

tests

There is a python script that tries to send a constant stream of messages through websockets. It is temporary and sometimes crashes, to keep it alive: while true; do python3 test_websocket.py; done

References

• https://github.com/me-no-dev/ESPAsyncWebServer#async-websocket-plugin
• https://medium.com/@martin.sikora/node-js-websocket-simple-chat-tutorial-2def3a841b61