Have you ever forgotten your wet clothing inside the washer for a whole day? I have. Even for two days. They smell. You have to wash them again and you know you might end up forgetting about them again! Actually that is happening to me since me moved to an old house in a town north of Barcelona. Instead of having the washer in the kitchen, like we used to, now we have it in the cellar, in a place I don't normally pass by to notice the laundry is done....
Since I discovered the Sonoff I've been thinking about embedding it inside a switch. I started looking for old power meters, timers,… I had at home but the Sonoff is a bit too long. Why didn't they design a square board? I event bought a bulky Kemo STG15 case with socket. Next I decided to design my own board. It is meant to be the “official” hardware for the ESPurna project so it's called ESPurna too....
I was not the first to arrive at the party but since I discovered the ESP8266 I've been enjoying it. Then I stumbled upon the Sonoff and dude was I amazed. They are cheap and so very hackable you cannot help buying them, tear them open and customize them. Sure they are not CE or UL compliant, yet. My previous post about adding a custom RF module to a Sonoff HT got some visibility as it was published at hackaday....
Yes, sure! You can buy a Sonoff RF and you are good to go, I guess. But I didn't and I was not so sure about the no-named RF receiver so I ended thinking about adding my own. But first things first. The Sonoff is an ESP8266 based smart switch by ITEAD which comes with custom firmware that communicates with the manufacturer cloud to provide “smart” capabilities like remote switching or scheduling....
