Does anyone know of any off-the-shelf X10 light intensity sensors or colour sensors? From what Google tells me, I'll probably have to build by own, but I'll be glad if you can tell me otherwise
The X10 motion sensor MS13 will tell you roughly when it's dusk or dawn but that's about it as far as I know. You are probably going to have to make your own.
Thanks for getting back to me. I actually already have some of those but I am looking for something with a finer granularity than binary data. I want to detect lights on and lights off events and a binary sensor is only useful for that, at most, at nighttime. I guess I'll have to get building...