Bidirectional Visitor Counter using Arduino UNO and IR Sensor. ... When an object blocks the IR rays, the Arduino detects a voltage change and processes it as an event. 🔌 Circuit Connections. VCC of ...

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 ...

3D Scanner Using A Sharp Infrared Sensor. 13 Comments . by: Phillip Ryals. December 21, 2013. Title: ... He used a stepper motor to rotate the object being scanned, and an Arduino for control, ...

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.