3D Printed Stepper Motor

480 Step Per Revolution Nema 17 by David Hartkop

• https://www.thingiverse.com/thing:1362555 - amazing work

• https://www.ideapropulsionsystems.com/david-hartkop-resume
• More about split-ring, compound planet gears - [1]

• Concept of split annulus gearbox or split annulus planetary gear - which gets a very large geardown in a super compact form factor - much improved over the stacked planetary gear!!!! Game changer for high torque, low speed applications.
• See example at Hackaday - [2]
• Is this the same as Strain Wave Gear?

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See Also

• Simple Stepper Motors
• Open Source Motor/Engine Construction Set
• 45 kW DIY Motor
• Open Source Brushless DC Motor
• Open Source Brushless AC Motor
• Open Source Servo Motor
• Open Source Stepper Motor