Preparedness

Open firmware that makes cheap LoRa boards into an off-grid encrypted text mesh, paired with your phone.

A standalone LoRa pager with full QWERTY keyboard, color display, and Meshtastic firmware—no phone pairing required.

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.

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.

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.

Open firmware that turns supported LoRa boards into RNodes for Reticulum, Sideband and Nomad Network. Flash it yourself, and buy only from honest makers.

ESP32-S3 (Wi-Fi) or ESP32-P4 (Ethernet) firmware that reads a USB UPS and serves it as a standard NUT server to Home Assistant, Synology, TrueNAS and upsmon.

ESPHome firmware that pings the SvitloBot service while it has power. When the pings stop, your Telegram channel says the power's gone. No mains wiring at all.

A build pattern for a temperature alarm: an ESP32, a waterproof DS18B20 probe and a web setup page that emails you when the reading crosses your setpoint.