All it does is time the activation of the relays that control the gas flow, power, and wire feeder, so [Brett] decided to use an Arduino instead. The welders control circuit runs at 24V ...

At last, some 'spare' time this weekend, and I learned two things about SCR dc motor control: Permanent magnet dc motors need ...

The Casio SK-1 keyboard is fairly well-known in the “circuit bending” scene ... replacing his SK-1’s ROM with an Arduino so he could take complete control it. Replacing the ROM chip with ...