Hi,
I wanted to extract extra performance/efficiency from my radiators. There are devices for this on the market and I found one product which is ESP32C3 based.
It has 3 temp probes and can output to 12V PC fans with PWM. I think there’s a lot of use cases for a device like this, so I wanted to liberate it from it’s closed firmware and use ESPHome.
I reverse engineered the hardware and installed ESPHome on the device. I’m sharing my config so others can enjoy it too: