I am finishing up the guest room this next week and will be setting up my lab, for now, in the wife’s sewing room. The first project on the bench of doom is going to be to set up my Openhab and Node Red on a Pi server and then to build a controller for my water heater pump loop.
The circulator pump has a timer but the wife is home all day and I am up half the night due to work schedule and I don’t want to spend the money heating all the house plumbing up 20 hours a day when the hot water is only needed at the faucets maybe 3 hours a day. So, I am going to grab a few Sonoff Basic’s and use one to run the circulator. It is currently plugged into an extension cord anyway so setting up a Basic for this task makes sense ( on the UL cert. concern). The plan is to then set up a few wifi connected buttons to turn on the circ pump for 2 minutes. I have been looking at options for the buttons and think the ESP32 modules I have are the answer. Never used them but what the heck, right?
Any other suggested boards or items you can think of to do the switches? This seems like an easy project to me but I am an idiot and often wrong.