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| NeoTech:
Most outrunner styled BLDC (brushless dc motors) can be converted to work as a stepper motor / servo if you wanna go the route. A outrunner can be made by hand or just pick one up from a model shop. |
| John Rudd:
--- Quote from: NeoTech on May 02, 2013, 04:27:34 AM ---Most outrunner styled BLDC (brushless dc motors) can be converted to work as a stepper motor / servo if you wanna go the route. A outrunner can be made by hand or just pick one up from a model shop. --- End quote --- Inrunners work equally well (and no moving parts on the outside)....but expensive |
| Weston Bye:
How complex and efficent motor do you want? If you are just looking for a demonstrator, this works: The motor is more accurately described as a variable reluctance motor. the rotor is just steel - no permanent magnets. 15 poles on the rotor times 4 coils give 60 steps per revolution in full-step mode - perfect for a clock if the coils are energized at 1 second intervals. |
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