I wonder if you can easily build an HDMI CEC filter

my TV keeps turning on when I don't want it to, but I do want to still have CEC volume controls

GitHub - SzymonSlupik/CEC-Tiny-Pro: HDMI CEC sniffer / processor with zero additional hardware - connect the HDMI CEC line (13) directly to an Arduino board.

HDMI CEC sniffer / processor with zero additional hardware - connect the HDMI CEC line (13) directly to an Arduino board. - SzymonSlupik/CEC-Tiny-Pro

GitHub
@foone oh damn, yeah that looks perfect
@foone
I'm using a similar project to provide CEC control on a device that doesn't support it
https://github.com/gkoh/pico-cec
GitHub - gkoh/pico-cec: HDMI CEC to USB HID keyboard adapter

HDMI CEC to USB HID keyboard adapter. Contribute to gkoh/pico-cec development by creating an account on GitHub.

GitHub
@foone if one could build that, then i'd build one for the inverse of your problem; my steam deck doesn't turn on the TV, because i'm using the pinephone dock as my steam deck dock lol
@foone you can do anything with enough CPU power
@foone its protocol looks super simple, i think you could
@foone a chuck e cheese filter?

@foone this would be marvelous. I bought an HDMI breakout box to manually cut the line to one device because of its nonsense behaviour on the bus

Furthermore, connected to @homeassistant, it could bring much fun

@eingemaischt
Take a look at this,, CEC for ESPHome: https://github.com/Palakis/esphome-native-hdmi-cec
I tried using it myself for CEC remote passthrough but switched to another method before finishing. I've spent waaaay too much time recently figuring out CEC lol
@foone @homeassistant
GitHub - Palakis/esphome-native-hdmi-cec: HDMI-CEC implementation for ESPHome

HDMI-CEC implementation for ESPHome. Contribute to Palakis/esphome-native-hdmi-cec development by creating an account on GitHub.

GitHub
@foone
This article has some good pointers for CEC debugging using a raspberry pi
https://johnlian.net/posts/hdmi-cec/
Fix HDMI-CEC weirdness with a Raspberry Pi and a $7 cable

Revenge tale against Consumer Electronics "Control".

John Lian