Macro pads are handy for opening up your favorite programs or executing commonly used keyboard shortcuts. But why stop there? That’s what [Jeroen Brinkman] must have been thinking while creating the ...

Arduino Micro has some extra leds that it is tricky to programme. Like almost all Arduinos, has a built-in led – the green one on the left in the photo. And it has a pair of yellow leds – called TX ...