With their cheap price tags, massive I/O provisions, and low power consumption, microcontrollers like the uber-popular Arduino family ... a couple of motors and relay modules for your tiny ...

The Arduino code tells us that the valves will ... As the valves use 24V and the motor 12V, standard N-Mosfets and power relays are used for voltage conversion. The remote controller [Gilard ...

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 ...