Daniel Eichhorn
Obviously I didn’t have the time yet to test one, but there are some resources on the Web which describe their experience with it. For instance Rob Fowler left a comment on the SONOFFs Banggood page:
This is a very well designed board. The tracks protecting the high voltage are wide and properly milled. The GPIO0 is on a button and the serial pins are run to the edge ready for a header. The layout is one of the best I have seen for ages in a 220V product, seeming to choose safety over size. Mine is already running micropython and I also tested LUA. I can see a use for 100s of these.
Brian Moses got the chance to pre-test one as a early peak and seems quite happy about it (read more on this blog). Also Pete Scargill has already received one and wrote a blog post about it (find out more here). And last but not least ITead Studio has started a Indiegogo campain for this product.
For completeness I should also mention that there is a second kind of appliance from ITead Studio which is called the Slampher. It is has an E27 socket and can plug in one on the other end. Like the SONOFF it can be controlled through WiFi to switch lamps in your house. And to make things more confusing there are versions of the both SONOFF and Slampher which also have an 433MHz RF interface and can be controlled with a small remote control.
Summary: if the SONOFF is relatively easy to program then USD $5-9 for one is a very attractive price for such a device and could enable you to turn your home automation dreams in a price-worthy reality! Now I’ll have to wait until the postman brings me one for testing!
Hi
Yes I've just done a quick review of these products also.. http://tech.scargill.net/itead-slampher-and-sonoff/ and my question is the same – how easy is to to re-program them. To be honest I think Sonoff is the big player, Slampher is a tad large (imagine putting it in your average lampshade – the bulb will be sticking out of the top) but Sonoff, suitable reprogrammed to handle MQTT (and that's another of my projects) would be stunning at that price – I've asked the question (how to connect an FTDI etc) and will blog when I find out.
I have a question related to what appears to be the newest Sonoff RF. It has five pins on the header that we are interested in. But I am not assuming that the square pin is 3v3 anymore. Is there anyone who knows what the actual order is? I have sweaty palms and an FDTI module and I am itching to reprogram the thing for Blynk.