Hi, maybe not entirely relevant for this topic - but maybe you guys have any idea how to build and cheap system which will gather temperature wireleslly to one place. Ideally I'd like to have 2 sensors (one inside and other outside, with own batteries) which will send data to some central device.
I have home server on MacMini - so WiFi could be option. Any ideas?
I've always wanted to build something like this which - but always ended calculations that are rather expensive and devices are relatively big.