There are some old AC units out there that still work just fine, but nowadays we are used to everything being ... fit the shape of the control knob. An Arduino measures the temperature of the ...

I used a separate Arduino board to provide sound to light ... shield and then connecting the screw shield, Crowduino, and relay shield together. After that, things got a bit dicey.

Cook At this point, your Arduino has the ability to sense ... You can just leave the power relay on top of the enclosure, ready to use with your fan or whatever appliance you’re looking to ...

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 ...

It can be tiring to use your mouse for long periods ... them with bigger LEDs or even a light bulb (paired with a relay for the Arduino Uno). Try a toggle switch instead, so you won't have ...