Arduino Composite Video
- Posted by Phizone on November 26th, 2008
Television! Teacher, mother, secret lover. –Homer J. Simpson
Having only discovered the duino recently, I’m constantly searching for applications that push the limits of what can be done with the device. There have been several sketches posted that will output composite black and white video to your TV with a very simple circuit, but the most interesting of these to me is the Arduino Pong code by Alastair Parker. What I’ve done is strip the code down to just the intro screen in order to simplify the idea and get my mind wrapped around it. Check out the following schematic, code and resulting output.
Download the code.
Arduino Composite Video Schematic
To change the on-screen text, grab a sheet of graph paper, create a rectangle that is 38 units wide and 14 units tall, and mark the pixels you would like to turn on. After that, it’s simply a matter of changing the “setPixel(x,y)” lines in the code. Have fun and as Homer says: Let us all bask in television’s warm glowing warming glow.
Composite Output Result
The circuit on breadboard
