Hi,
I am quite new to HA and ESPhome. I bought a few ESP32 boards and managed to read in the famous Dallas temperature sensor and get it displayed in HA. All went well.
No I am struggling with a new project. I want to use overproduction of our solar panels to heat up an electric boiler. The way to control the heating resistance is by using a solid-state relay with proportional (analog 0-5V) input. The boiler has a 2kW heating resistance so 5V should result in 2kW and 2.5V should result in 1kW.
The actual power delivered to the grid is available in HA .
Big question is where and how to do the calculations? Is someone familiar which such setup?
Hi, That’s exact the same thing I would like to create. Did you get any further on this issue?
Can an esp32 board or simular create an analog output between 0 an 10V ?
How are you going to output 10v from an esp32 board that runs on 5v max and its gpio pins are 3.3v max? Voodoo magic??
The esp32 can do analog output, its right here in the esphome documentation and only takes a trip to the search box to search for what you are looking for, its real simple.
As far as 0-10v output, thats obviously a problem but, this is where external components come in. There are all sorts of external DAC’s you can wire up to an esp32.
You may be eequired to use some search boxes and read through instructions/documentation to learn how to use it though. Unfortunately that stuff is just part of doing DIY projects.