Project on processing and arduino for the official timer used in the international robotics tournament LATINBOT https://twitter.com/torneolatinbot?lang=en
The sensor used was based on a IR Sender and receiver. The PWM on the sender was controller by an Arduino Micro and the Receiver used an Arduino Uno with was conecter via serial to the PC where the processing Application was being executed. Both schematics for the sender and receiver are provided in this repository.
https://www.youtube.com/watch?v=m9lWtLH9l_A&t=2m27s
By: Johan Porras (JohanpG)