On 05/05/2018 00:12, Dave Plowman (News) wrote:


I really don't believe you could make a hi-res stepper motor for less than
a moving coil meter.


Well you can buy the bigger (more expensive ones) for less than 50p in
twos and threes.

The sort used in cars must be 10p or less.

All they are are a couple of coils and a magnet, no expensive precision
springs or bearings and no expensive calibration processes or damping
needed.