Those are all reasonable comments, I have spent the last two years doing up my own house, but that is NOT what robdobson.com did. Note: "Since Lorenzo (the spa

Those are all reasonable comments, I have spent the last two years doing up my own house, but that is NOT what robdobson.com did. Note: "Since Lorenzo (the sparky) was replacing most of the wiring in the house I managed to get him to bring a lot of the control cables together in around five separate locations." Granted, not ALL the wiring, but enough that there are "at least three (control) units lost in the walls" that don't control anything. The lack of access in a house to critical infrastructure is why that critical infrastructure has simplicity and reliability as its primary characteristic, and if you are going to experiment, maybe consider redundancy? The writer appears to have a lot of hardware expertise, and almost none about systems. Single point of failure? Check. Closed hardware systems that might be unsupported sometime soon? Check. No diagnostics? Check. This was a fascinating project and I commend the writer for posting all the hairy details, but I am slightly appalled at the wastage.