The simple circuit was designed using a 555 timer and pulse width modulation for controlling the speed of DC motor. The pulse width modulation (PWM) pertains to the process of switching the power ...

“HW-687 is one easy module for adding speed regulation to your next DC motor-based project. It is a simple pulse-width–modulated speed controller providing smooth control with almost no jerks. There ...

Getting step motors up to speed has never been a problem. Getting them to stop is a different matter. Step motors (because of their magnetodynamics) are naturally springy, so they tend to vibrate at ...