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This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer. In my example the whole ...

YouTuber DuctTape Mechanic has published a new tutorial on how you can create your very own Arduino-powered speed bag to count your punches as you work out. This innovative project uses a recessed ...

Maker and developer Rolf Hut has created an awesome Arduino powered longboard which is equipped with LEDs that react to the speed of the rider and board.

Rotational Speed When you write software to control a stepper motor, you must first know how many pulses the motor needs to turn a full rotation.