Mobile Phone TV Remote allows the user to change the TV channel with your mobile phone. The invention uses an infra-red LED to communicate with the TV.

I noticed that lots of people use their TV remotes frequently.  I solved this problem using a cellphone – which is something that lots of people own.

The best part about this project was trying to decode and understand infra-red signals used by TV remotes and trying to replicate these signals with my own circuits. 

It was a challenge getting my cellphone to communicate with my circuit in an elegant way.  I went through many revisions of hardware and software before I could get a cellphone to control an infra-red LED.