Sonoff RF Bridge 433 - firmware flashing
Recently I've found interesting device - it is WiFi to 433MHz gateway.
I've used FlashESP8266 to flash sonoff.bin (6.2.1).
Connect 3.3V USB-RS232 interface to J2 (you won't need 5th - SDA - pin).
To program you have to set S2 switch to OFF position.
As You can see it is in ON (normal) position.
Future reading:
- Sonoff RF Bridge w/ MQTT & Home Assistant
- thehackbox.org/tasmota
- Modified External GPIO Jack for Sonoff RF Bridge R2
- OpenMQTTGateway
Three chanel 433MHz relays - it uses specific protocol:
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