LoRa_Chat

A proof of concept to realise half-duplex communication on ESP32 LoRa Boards

Changed

• Bluetooth naming per board, last 3 MAC address hex pairs as device name
• USBSerial input
• Some minor tweaks
• Removed code for other boards

Installation

Using Arduino IDE:

• Install ESP32 Boards on Arduino IDE
  • Install instructions for the ESP32 Board
• Install OLED Libraries
  • Sketch -> Include Library -> Manage Libraries
  • Search for "SSD1306" from Adafruit in Library Manager -> Install
  • Search for "GFX Library" from Adafruit in Library Manager -> Install
• Install LoRa Library for Semtech SX1276/77/78/79
  • Sketch -> Include Library -> Manage Libraries
  • Search for "LoRa" (LoRa by Sandeep Mistry) -> Install
• After installing the libraries copy and paste the LoRa_TRX.ino file into your Adurino IDE
• Before flashing the firmware set the right frequency config (868 Mc or 433 Mc band)
  • Currently supported board: TTGO LoRa32 T3 1.6.1 (and others if you change LoRa chip pins and/or display pins)
• Compile it and upload to the board

Usage

• Sending and receiving messages is done via serial communication over Bluetooth
• Pair your Smartphone or Tablet or PC with the ESP32 LoRa-Board
• Download a Serial Bluetooth Terminal APP and choose your previously paired device for serial communication
• Or on FDroid is a Bluetooth Terminal available
• Once you are connected you can start sending and receiving messages over LoRa direct on your cellphone

Credits

• Thank you @DEVPAR DM5LG for your code!

Screenshots