Hollow clock 2 - silent and smooth
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PLA from £6 inc. UK delivery on letter-sized prints. We slice, print on a calibrated Creality K2 / Bambu A1, QC and post.
- Silent and smooth : stepper motor version of "Hollow Clock", https://www.thingiverse.com/thing:4747403
- Easy operation : super-easy time adjustment
- Easy print : printable without supports (except optional cover.stl)
- Easy assembly : gears can be set by just sliding in
- Cheap : used stepper motor is very popular and cheap (around 3USD with amp circuitry)
A bit smaller than original "Hollow clock" (rotor diameter : 200mm vs 160mm). Now it has no air gap between rotors.
Update Feb 24, 2021
- Arduino code for stepper motor control is improved. Rotation is a bit smoother than before, with 8-phase control.
Update Mar 3, 2021
- Cover for the rear parts (stepper motor, circuits) is added. It needs support to print.
Update Nov. 21, 2021 : "Hollow Clock 3" is released.
https://www.thingiverse.com/thing:5142739
