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 ... calculate RPM. Another alternative would have been to use a reflectance sensor which allows to ...

The circuit is based around this Sputnik-looking standalone IR temperature ... cone starting at the sensor.” [MakeFunStuff] paired this easy-to-use sensor with an Arduino Nano and five LEDs ...