Cell towers go down. Power goes out. LoRa mesh radio keeps working!

This is an off-grid message board. It listens for messages sent across a LoRa mesh network and shows them on a 4.2" tri-color e-ink display. There is no internet, no cell service, and no subscription required!

Messages arrive over 915MHz radio from any node running Meshtastic. The newest message is shown in bold red so it reads across a room, with older messages dropping to black underneath it.