I have a motor. Checked it. Looks really strong. at least I can't stop the rotation just with my fingers. Will use it.

After the motor was selected, I chose the power supply. Really nice shop btw. 2.5 euro for the thing is a good price. Ordered power supply, button, fuses and their holders, IDE cable, case, power socket with integrated filter. in the pollin.de

still need 220 sockets for external devices, but I want them with covers, better for outside usage, so will look for a reasonable price.

Ordered 8 channel relay shield on the aliexpress.com. This can be a problem - their delivery time can last months but I believe in the best. anyway this shield is just a final device. I will start assembly everything in case after will get the parts from the pollin. the work with a relays can be tracked by LEDs connected to the appropriate pins.

I expecting, that the most time will be spent on the WEB configuration GUI and configuration of the raspberry. Plus somehow I will need to extend the USB to allow the USB WiFi stick operate outside the metal case.