But you can do things like automatically turning your TV off, adjusting volume and play/pause/stop all over CEC. For my TV, I’ll be using the “power on” and “change input” commands to automatically turn my TV on and switch HDMI ports. There are a ton of CEC commands that your TV could support. It’s part of the HDMI standard but it’s up to the manufacturer to decide what features they want to support.

If you have a Chromecast and you’ve noticed that your TV automatically switches to the correct input when your Chromecast starts playing something, that’s CEC at work. Background of CECĬonsumer Electronics Control (or CEC) is a feature of HDMI to allow users to control devices through their HDMI port. You can also automatically turn your TV off at night or create any other automations involving CEC commands.

I’ll be installing the CEC-MQTT-BRIDGE on the Pi to enable controlling and automating the TV over the HDMI port.īy the end of this article, I will be able to tell my Google Assistant “Hey Google, show me the nursery camera” and it will turn on the TV and switch it to the correct HDMI port to show my camera stream. Home Assistant already comes with the HDMI CEC integration. However, this requires Home Assistant to be running on a machine directly connected using HDMI to the TV you want to control.įor my setup, a Raspberry Pi is already hooked up to my TV displaying my video surveilance system, but Home Assistant is running on another machine in my office. All you’ll need is a Raspberry Pi hooked up to your TV to get started. In today’s article, I’ll be installing and using a project called CEC-MQTT-BRIDGE that enables you to control your TV using CEC commands issued by Home Assistant over MQTT. Seems like a lot of TV manufacturers make their TVs hard to automate and control by consumers. If you’re like me, you’ve probably got a TV or two in your house that don’t integrate well with Home Assistant or your preferred Home Automation platform out of the box.

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