Want to take HDMI control and automation to the next level?

I am happy to confirm that the ESPHome HDMI CEC firmware works on the ESP32-C3 supermini and that I just released the perfect case for it on MakerWorld!

An awesome device for just around $3 including microcontroller, HDMI connector and case!

With HDMI CEC you can not only control equipment that does not have a Home Assistant integration but even control some features that are not supported by an integration such as turning on a PS4 that is completely turned off, control the volume of your TV and receiver, switch HDMI inputs, get information about what devices are turned on and what source is playing and even send remote control commands.

All you need is to plug it into your tv or receiver and it will control all other connected devices. No need for “one way”, “line of sight” IR control.

I have been using HDMI CEC to control and monitor the power state of my tv for years, but always on Raspberry Pi (zero). This method is much easier and even works with Home Assistant servers that do not support HDMI CEC.

Link to ESPHome configuration: https://github.com/Palakis/esphome-native-hdmi-cec

And to enable CEC messages via MQTT: https://github.com/Palakis/esphome-native-hdmi-cec/issues/9#issuecomment-2209323488

Node-RED flow that translates CEC commands to plain English (please note that this is no longer necessary, since the firmware now does the translation): https://flows.nodered.org/flow/db17ddf68de40c89c7824128a96ebd5e

ESP32 DevKitC: https://a.aliexpress.com/_EwVZblj

HDMI breakout board: https://a.aliexpress.com/_EyHJrdT

Free 3D model and full parts list for the compact version (with links) can be found on MakerWorld:
https://makerworld.com/en/models/1488957-esp32-c3-hdmi-case#profileId-1556002

Thanks to Palakis for making HDMI CEC available on ESPHome!