4 votes
Accepted

Can closed loop steppers be used for extruders?

Closed loop steppers like S42B are becoming popular for the spatial axes because compensating for skipped steps is the correct way to recover for those axes. For example, if the nozzle knocks into a ...
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2 votes
Accepted

Is it possible to get higher resolutions by using high resolution encoders and custom firmware?

The mistake in your reasoning is assuming no microstepping. Most 3D printers use 16 microsteps, and in my experience with both cheap A4988 drivers and nice TMC2209 drivers, microstepping is quite ...
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2 votes
Accepted

What is the best way to build a closed loop continuous rotation servo for 3D printer?

You can use a magnetic position encoder. AS5048B High Resolution Position Sensor 14-bit rotary position sensor with digital angle (interface) and PWM output 14 bit means 16k steps/rotation. With a ...
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  • 3,806
1 vote

What is the best way to build a closed loop continuous rotation servo for 3D printer?

The gearbox approach is solid, but it will be 100x slower, and you said you wanted speed.
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