A simple circuit. Switched 5v from the PC to detect IF the PC is on to a GPU of tha arduino. Note line level conversion my be needed. Use a relay with a 5v coil, a couple resistors to create a ...

Simply step on the giant lighted arcade button, and the equally giant NEMA-23 stepper motor moves a 3D-printed turntable inside the bucket with the help of an Arduino Nano.

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 button is not pressed and 1 that the button is ...