After some searching, I ended up using a microcontroller and a piece of code borrowed from the web that I tweaked and adapted. The microcontroller-based concept was chosen because I wanted to scale ...

[Fernando] sent in a tip about a pet project he’s been working on. It’s an interesting take on a 3D scanner. He used a stepper motor to rotate the object being scanned, and an Arduino f… ...

Posted in Arduino Hacks Tagged adafruit, infrared, ir, kart racing, Lap counter, racing, reflective object sensor, sparkfun, thermal printer, Velleman PEM10D Post navigation ← Laser Exposing ...

When a finger or other object touches the surface, it causes the IR light to scatter in many directions. Some of this light is directed down into the screen, towards an array of 64 IR sensors.