Nordic nRF525 projects
Nordic nRF52 Preparedness Projects
Builds for power, internet and phone outages: off-grid LoRa texting to people nearby, power-cut alerts, UPS monitoring and a freezer alarm. Built with Nordic nRF52.
Illustration
ESP32
Open firmware that makes cheap LoRa boards into an off-grid encrypted text mesh, paired with your phone.
Beginner·Code
4 parts listed
Illustration
ESP32ESP32-S3
Firmware for a cheap ESP32 LoRa board that relays the #mesh channel between Bitchat's Bluetooth phone mesh and a MeshCore LoRa network, both ways.
Beginner
4 parts listed
Illustration
ESP32ESP32-S3
Open-source firmware that turns a LilyGO T-Lora Pager or T-Deck into an offline handheld for LoRa chat, offline maps, walking routes and team awareness, with no phone needed.
Intermediate
4 parts listed
Illustration
ESP32ESP32-S3
Free MIT firmware that turns cheap LoRa boards into an off-grid text mesh: phone-paired companions, high-placed repeaters and BBS-style room servers.
Beginner
8 parts listed
Illustration
ESP32
Open firmware that turns supported LoRa boards into RNodes for Reticulum, Sideband and Nomad Network. Flash it yourself, and buy only from honest makers.
Intermediate
5 parts listed