HotPi

[CurlyMo]

Nice guide. Didn't knew this thing existed. However, i don't understand your enthousiasm.

First, (i have to say this to make the rest of my points ), when are you going to stop bother about your RPi temperatures. You aren't going to break it on temps. So the fan controller is quite useless.

Second, the price is quite high.You can buy an:
IR receiver TSOP4838 for $0.99
IR sender for $0.93
RTC for $1.40

And if you really want to:
RGB led $0.99 for two.

Third, the programs are really bad if they use that much resources. I believe you really have to offer more for a kickstarter project.

For about $ 5 i can solder myself a nice small board that i can put directly on my RPi GPIO. And what programming does this thing need? It only has to check the temp of the RPi and control a small fan. I'm running pilight with hardly any resources (about 1% CPU every 3 sec.). There are already great and efficient RPi programs available for the RPi and for IR we already have Lirc.

That would make a total of $ 3.50 --> £ 2.15. The nice thing is that you are not going to block any non-used GPIO pins.