First, don't cram all the possible clicks into switches. Hard to remember, too complicated. Been there, done that. For labeling: laser printing on transparent foil is a very good idea, but you have to laminate it after printing. Easiest would be to stick aonther layer of transparent film on top ...

I've bought something nice for my RasPi: a DIN rail mounted case. Sooo nice. (The big hole on top has a removable transparent insert, so you can add a display there; currently removed). http://i.imgur.com/pvssXoel.jpg One downside is that it doesn't have any holes to lead wires outside. 3 relay ...

Fair points, but that is a new installation and it's very efficient.

The floor is warm after just 30mins, after 2hrs you need to open the windows.

But yes, it always needs some tweaking.

Hey all, decided I'll throw my WIP project into the mix. Hardware: - Gas-fueled central heating unit. Heating requires closing a control loop via a relay. - Floor heating on the bottom floor (9 circuits), additional heater in the guest bathroom. Floor heating requires enabling circulatory pump to ...