Wandering Hour Clock with Stepper Motor
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A stepper motor driven by an Arduino Nano replaces the clock movement giving much more power to overcome friction.
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- 5 / 5
- Likes
- 21
- Downloads
- 247
- Makes
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- Views
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- Reviews
- 4
Updated at source:
Model information
- Source
- Printables
- Category
- Home Decor
- License
- Creative Commons — Public Domain
Thanks to David Kingsman for a great project and documentation.
After building the clock followed by much filing and sanding I could not make it work with the recommended clock movement, even though it seemed to turn freely. Here’s a remix of the project using a cheap 28BYJ-48 stepper motor driven by an Arduino Nano which overcame the problems.
The Arduino sketch drives the clock advancing every 10 seconds. Two push-buttons allow “quickly” moving forward or backwards to set the time. It uses a stepper motor driver I wrote for another project which is included. No schematic is provided as the wiring is extremely simple and is described in the sketch .ino file.
The 28BYJ-48 stepper motor and ULN2003 driver board are cheaply available from a number of sources including Amazon and eBay for around $3, although you might have to buy a bunch of them.
The ClockMovementGear is remixed to be a press-fit on the keyed stepper motor shaft. I had to add a ¼” or 6mm washer under the gear to clear the motor mounting screw heads.
Thanks again David Kingsman!