K.C.'s Garage

I recently bought some Sonoff S31 "smart outlet" switches, as I like the form factor better than the Sonoff Basic and the larger Sonoff S20.  I was able to disassemble and flash them with the fantastic Sonoff-Tasmota firmware from Theo Arends . Disassembly instructions: 1. The darker colored square panel with the button on it snaps off.  Pry it carefully off from one side to remove it: 2. There's two "slide-out" corner pieces on the male plug side. Slide these towards the button side: 3. Remove the three screws that are now exposed: 4. The case containing the female outlet side should separate easily now.  No prying necessary: 5. The circuit board is actually two boards soldered together in an "L" shape.  The small edge with the button on it contains the serial header for the ESP8266.  From the top down, the connections are VCC, RX, TX, N/C, N/C, GND   (Notice the two unused pads labeled TX & RX.  They don'...