So after a long silence I have some progress in my pocket, I manage to get my hands on a water pump that came from a wreck car from the local car dump for 5 €, this pump is a normal water pump used for sparying water to the windshield of a car, it runs approximately at 12v and drains more or less 5A.

Now my second step was to get me a power supply that knows how to do the job, so, after a bit of online research I menaged to buy one of these:

GALYGG AC 110V-220V to DC 12V 5A(60W) Universal Regulated Switching Power Supply Transformer.

and of course one of those:

4-Channel Relay Module.

At the end, last but not least, I bought a super, wonderful, poweful..... a simple 6mm plastic pipe (3/16"")...now I have the power..

I'm am ready to light this up.. but..before, in order to run a properly test I need to:

1. Get a fresh Raspbian image for my Rpi3 running a nodejs server
2. An Arduino board
3. An 16x2 LCD screen
4. An Android application to control it, made in Ionic2, communiticating to the nodejs server via socket.io.

so..... ready..set!

An the relative water source:

In the next log I'll put the connection details and the code needed to begin the the ancient human dream... how to automatic water my plants!