Revisiting a Pong game with composite video output #Arduino #Gaming
John Graham-Cumming discusses revisiting a Pong project developed in 2011. At the time, composite video televisions were quite common. On getting a new television with only HDMI input, the Arduino Pro-based hardware didn’t generate the right signals.
The post revisits the methods used to generate composite PAL video using only two resistors and two digital pins. Toggling the state of those two pins can provide approximately the correct video signal voltages with the two resistors chosen (magic! but well explained – ed).
With the methodology from 12 years ago verified, a composite to HDMI converter from China was usable to once again play this classic game.
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