My neighbor usually hooks up his air compressor to the main line, and than runs each zone on the control box for a minute or so. I suppose that he could go over to each valve to turn each one on manually after powering down the system. That is a good fallback if I fail to implement something that is easy to use.
Thanks for offering your help, Dan. I have a lot of questions, but I’m still digging through the project. proto.py seems to be where I need to start. I see you even have documentation on that 🙂