You can read the state of a button using Arduino and a few lines of code. The actual state is shown in the Serial Monitor window as 0 or 1, 0 meaning the ...

While you hopefully don't need one-button access to 911, a desk-mounted panic button is undoubtedly cool, and it makes for a great DIY Arduino project ...

Power System I generally power my Arduino projects from a shield. It lets me avoid wasting power through the USB circuit, and also lets me easily put filter capacitors on to help smooth power.

Posted in classic hacks, hardware, Musical Hacks Tagged arduino, Casio SK-1, circuit bending, NEC 23C256, rom ← Repairs You Can Print: A Little Love For The Glove Box ...

The 486 that [someyob] is restoring had the Turbo button, but sadly there was just a simple LED to show whether or not it was engaged.