Ashley

This code allows two Raspberry Pis to communicate via the LoRa wireless protocol.

Hardware

This is prototyped on a RPi 3B and a RPi 4.
The transceiver is a RFM95C, based on the SX1276.
The antenna is 17.5mm long, has 2.15dBi of gain and 50Ω impedance.
Working on 868MHz. https://thepihut.com/products/lora-antenna-with-pigtail-868mhz-black

To see the HAT used, visit https://www.adafruit.com/product/4074
Information on using the transceiver: https://www.hoperf.com/data/upload/portal/20190730/RFM95W-V2.0.pdf

Scripts

main.py

send.py

receive.py

To-do

• Setup radio settings in main.py
• Main loop for receiving, or moving to send mode
• radio object - may not be needed - can repurpose other code
• listen function
• send function
• button read
• message writing