The analogy is apt and helps to understand how a linear motor works, but it begs the question: what if we could unroll the stator in two dimensions ... bridge chips and an Arduino Mega.

When the pulses match, the servo motor stops moving. This pulse arrangement is very simple to drive from a logic output on an Arduino or ... do the same trick in two dimensions if you prefer.

A teacher I know is stuck, with only npn transistors in the supply cupboard and the need to create a reversible motor drive for an Arduino project. Reversing ‘bridges’ have four switches (relay ...

You can then add in an Arduino Uno R3 – basically a single-board computer – and the proper motor controller ... DVD drive’s head to move in two dimensions, X and Y, and cut out or laser ...