Day: June 15, 2014

Controlling your TV over CEC HDMI interface

Just to notify some info about how to control your TV over HDMI cable.

I found some info in the arduino forum:,22327.0.html

It pointed me to:

Yes, you can control over TV over HDMI cable using an arduino.

More info:

I’m searching for a way to send Closed Caption (CC) signal to TV, but it is not possible using HDMI cable. I think it is possible to send data directly over CEC interface (I²C) and use a board to get this data and show CC in a LED display.