laser tripwire with arduino

Laser Tripwire Experiment with Phototransistor

o the first step toward building my tennis ball sensing board was to test the simplest iteration of the sensor concept: A single laser/sensor combo, that is tripped when an object passes between them, blocking the laser beam. Will an object breaking this beam cause enough of a drop in the phototransistor’s reading to create a digital signal that we can feed into a microprocessor?

arduino, sketches and calculations

Throw: Active Art Project

Simply put, throw is a project that will consist of a wooden board equipped with laser sensors to determine where objects thrown at the board make contact. It will be connected to a micro-controller and computer to read input and create digital imagery.