ESPHome Controller for decentralized HELIOS ventilation KWL PWM

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Hi everyone,

I have a Helios decentralized ventilation system that is controlled by a wall panel. This panel sends two PWM signals to control the fans. However, it’s not very smart.

So, I built a module using an ESP32 and ESPHome to control two fan circuits independently. With this setup, I can integrate the control into Home Assistant and adjust it based on other sensor values.

I’ve shared the ESPHome code, the Home Assistant integration, and the wiring diagram on GitHub:

:link: GitHub - fototeddy/ESP-PWM-Control-HeliosKWL

If you have a HELIOS KWL EC 45-160 or similar fans with EBM Papst motors, this might be useful for you. :blush:

Cheers!