I guess I'm a little late to this party. But I have a Proof of Concept (POC) solution that you may be of interest to you. My github repo has a project name CECJOmniLinkII https://github.com/BobS0327/CECJOmniLinkII This would be the middleware referred to by JonW. It is a Java implementation that interfaces an OP2 controller with a CEC enabled device. This middleware would be installed on a RPI2 and the RPI2 to be connected to the HDMI port of a Consumer Electronics Control (CEC) enabled device. The POC code only uses two console buttons, one to turn CEC device on and another to turn a CEC device off. But this POC code can be very easily modified to allow audio control, channel selection etc.elmango said:Have someone have connected an Avr to omnipropanel and also control some futures like on/off vol up/dwn