Looking for a simple circuit to control the light intensity of Light Emitting Diodes (LEDs) or similar lighting sources? Here is an Arduino based circuit with three independent pulse width modulated ...

I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...

[Alex] needed a project for his microcomputer circuits class ... it looks like multiple LED’s are lit up simultaneously. [Alex] planned to use an Arduino to control this display, but it ...

Instead of the relative horror of driving 40 LEDs with a single Arduino ... To actually power and control the entire circuit, [Martyn] used an Arduino loaded up with a program based LedControl ...