Sonoff Smart Switch Teardown - What's it made of? 

Thank you mate!

Nice to see inside, thank you for the clear and concise video. I was wondering whether the esp8266 was used. Thank you :)

Good video! Question: my BASIC R2 started to reboot same as my MINI R2. What are the components that might be failing? The behavior: the device is always trying to connect. Then when it gets to connect, suddenly it reboots. I know that because I have setup the power on state to Relay-On so I know the device just reboot. Any clues?

Can I add 433mhz remote module in this switch

How do I add programmable voice commands to this so I can speak directly to it and switch the relay on/off

Hi, hope this finds you well, My 6 month old Sonoff basic R2 konked off ... I tried changing the relay, but it will not budge, it will not come back on (sadly the original relay broke off while desoldering it out) (Also there is no glass fuse, its seems to be a 5 band 10 Ohms 5% resistor in its place inside a heat shrink tube).. ... Anyhow Funny though 5 other Sonoff basic R2's switches have been working for over three years perfectly well ... And this new unit circuit broke and I cannot figure what component has popped. ... I'd be totally thankful if you could guide me on how to fix this.

I would use a triac

Good video over all but left some political faeces in the desert at the end. Good job!