and IR remote, but never like this. [electron_plumber] made an LED that can be blown out like a candle, and amazingly it requires no added sensors. The project uses an Arduino to demonstrate ...

One of [AnalysIR’s] latest blog posts goes over the simplest way to create an Arduino based IR receiver, making ... an LED (IR or otherwise) is reverse biased it can act as a light sensor.

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 ...

take a technological steup up from rolling plastic cubes by making Boxall's Arduino electronic die, which chooses a random number between 1 and 6 and displays it via a corresponding LED.