I just did my first project with esphome, a TH humidity sensor, and it was so easy. I’m thinking about my next project and this would be a great way to make my Sunlighten Sauna smart. Unfortunately I can’t find any information online about how I could wire in a esp32. I even took pictures of the electronics of the sauna to find model numbers and come up with no Google results.
SPBCH-MWD-1909-V1
SICPCH-MWD-1909-V1
Any guidance towards how I could accomplish this would be greatly appreciated.
Well I finally took on the challenge of creating something. It’s not pretty but it does work to control the basics. I built an esp32 that wires to the control panel so you can do virtual button presses to turn on the sauna. I’m also monitoring the led status to tell whether it’s on or not. I used optocouplers to keep the electrical circuits completely isolated. I built my esp32 code and wiring to also control the time/temp up/down buttons but I never figured out a way to read the values from the 7-segment displays. It took me a lot longer than I want to admit but I learned a lot in the process. Ideally the cleaner way of creating an integration would be to tap into the wires from the control panel up to the main board on top. I don’t even know where to start with reverse engineering that but if anyone has any pointers I’m always open to learn and share.
Here is a picture of the wiring on the esp32 end. I don’t have time to do a full write-up of my adventure but feel free to ask any questions