DIY Doomsday Phone uses ESP32 and LoRa to text 10 km without cell towers
TinfoilTricorn · x · 2026-09-24
A DIY communicator called Chatter, built on an ESP32 and LoRa radio, sends text messages directly between compatible devices:
- No SIM, no Wi-Fi, no mobile operator required
- Built-in screen and physical buttons mean no smartphone pairing needed
- Claimed range up to 10 km depending on terrain, obstacles, and antennas
Its core strength: two powered devices can communicate even when the mobile network is down — useful for camping, remote locations, or outages.
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