OpenNethome - an open home automation project

There are lots of useful hardware for raspi available, that can be used to work with Nethome server. If you have something to share, please do so.

http://www.sheepwalkelectronics.co.uk/
I example use RPI3 adapter + other modules for my 1wire setup.
There are of course lots of several other very useful things to order.

http://foogadgets.tictail.com/
Lots of sensors, e.g. wireless pulse counter which i use to measure power consumption. Works perfectly with Nethome.

http://www.piups.net/
This is something that i just found. Haven't order yet, but will study if it works with my setup (as i have already GPIO/i2c pins used).
EDIT: I just ordered this. Price of old version is only 7.99€ as new version is coming. Let's see if i will get it working.

http://www.pimodules.com/index-51.html
Another UPS solution + more

Thanks lassiko! Really good to get some info and tips on RPi HW! I am looking forward to hear about the piups.

Just received the PiUPS.
Installation was easy and all is working at the moment as promised. I have now two devices connected to GPIO pins.
First this PiUPS and then top of that RPI3, onewire adapter. PiUPS has a fixed i2C address = 18, but RPI3 address can be changed manually with jumpers.

Time will tell that how this works. Other people has complained that PiUPS batteries will run out fast, even if not in used as a backup. Lets see how fast that will happen. Anyhow, at the moment i dont see it that big problem. I have rechargeable batteries ready and those are easy to change even when raspi is running. Only thing is that i need to find a way to get a e.g. email alarm when battery voltage drops so that i can change those.

If that board not support external voltage measurement , you need a/d converter example this https://www.abelectronics.co.uk/product ... -converter
then if battery voltage is over 5 volt full , you need make http://en.wikipedia.org/wiki/Voltage_divider which split voltage example if full battery is 9v , you can make voltage divider which make 10v to 5 and pi measure that and that can be used code as input voltage *2 so we get correct value , ofcourse I think you need protect that a/d input some resistor which limit milliamps to input. that can be see in board specs.
after hardware solder , make perl code example which read that a/d board input value make some math input_value * 2 , and when that drop below something sent email my battery going empty pls change them soon
haha this is intrest I think I need buy one module and test that , well soon we need rackmount our nethome pi and other must hardware