The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close proximity sensor. As you can ...

This tutorial will guide you through the process of building a tachometer around an Arduino ... LCD to output the reading. Wiring and driving the LCD ends up being the hardest part. An IR ...

This specific sensor was chosen because others have successfully interfaced it with the Arduino. Not having to reinvent the wheel is good thing! For the build, [Brian] decided to hook up the IR ...