A Modular Central Heating System Controller - Arduheat

I had pt1000s hooked up on the bench, multiplexed and amplified etc, but I just couldn't get them calibrated properly or working anything like reliably. All due to my inability rather than anything else.

1Wire is so simple in comparison, but not a long term solution, so I will have to get the PTs working at some point in the future - so I will watch your system with interest!