Tagged: ESP32-S3

GridDown Secure Messenger: Using an SX1262 LoRa Radio as a Drone Scanner and Secure Messenger

Back in March, we posted about GridDown, an open-source Android tablet-based situational awareness system designed to operate without an internet connection, which uses sensors such as an RTL-SDR, a SARSAT receiver and an ESP32-S3/SX1262 LoRa radio.

Recently, GridDown developer Cameron wrote in again and shared with us that the LoRa firmware for GridDown has now been released as an open-source project called "GridDown Secure Messenger" (main website).

The project uses a LILYGO T-Deck CYPHER-M8K (an ESP32-S3 with SX1262, 2.8" display, keyboard, and GPS) to implement secure, encrypted off-grid text messaging, and it also doubles as a 900 MHz drone scanner, with the ability to decode drone Remote ID.

Cameron has also provided two YouTube shorts [1] [2], showing the firmware in action.

Example Renders of the GridDown Secure Messenger Running on a LILYGO T-Deck CYPHER-M8K.
Example Renders of the GridDown Secure Messenger Running on a LILYGO T-Deck CYPHER-M8K.

AI Disclaimer: The renders appear to have been AI-generated.