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We found a larger brushed DC motor that was rated for significantly higher power, 3D printed a double-worm-gear gearbox for it, and connected this to the walking mechanism, and . We found that it was powerful enough to move the legs, but just barely. It would not be powerful enough to move the counterweight as well.
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| Part | Source | Quantity |
|---|---|---|
| 3mm steel shaft | generic | ~50mm |
| 5mm steel shaft | generic | ~700mm |
| 5mm precision ground steel shaft | generic | 200mm |
| 3mm x 6mm x 2.5mm ball bearing | generic | 6 pieces |
| 5mm x 9mm x 3mm ball bearing | generic | ~50 pieces |
| M3 x 20mm cap screw | generic | 2 pieces |
| M3 x 30mm cap screw, fully threaded | generic | 1 piece |
| 2in OD cylindrical steel stock | generic | ~1in |
| 5mm x 7mm x 8mm slide bearing | McMaster | 2 pieces |
| 91MXL012 1/8in timing belt | McMaster | 2 pieces |
| 140MXL012 1/8in timing belt | McMaster | 1 piece |
| DC motor | Pololu | 1 piece |
| AA battery pack | Amazon | 1 piece |