[luma]

I'm also a fan of the Sonoff products for random use cases around the house. One thing I think should be noted - you no longer need to solder in a UART header to get your own firmware on Sonoff devices with the SonOTA project [1]. This project uses the factory OTA mechanism to load your own custom firmware on the device. The result is an IOT device that is cheap, readily available, and fully under your own control with no hardware modifications necessary!

[1] https://github.com/mirko/SonOTA

[joelhaasnoot]

Perfect, just used this to hook up my Christmas lights. Had an opened Sonoff device laying around that I had yet to flash. Put screws in and 5 minutes later had my lights working. Much easier than the 4 pin serial flash solution

[StavrosK]

Thank you for this. You just saved me lots of disassembly.