Driving stepper motors is a perfect example: you can grab a cheap controller board, hook it up to a microcontroller, and the rest is essentially just software.

Instead of using a latch and the Arduino’s PWM pins, we have a fully-dedicated PWM driver chip onboard. This chip handles all the motor and speed controls over I2C.

The new DC and Stepper Motor HAT for Raspberry Pi is now available to purchase for $22.50 and has been designed to allow makers to construct their robotic dreams ...

Stepper and servo motors have different attributes when considered for motion applications. Torque curves play an important role in selecting the proper size and type of motor for an application.

The Arduino takes this information and uses it to move the motors of the printer, positioning the marker over the correct location of the paper so the user can produce a dot.