12mm Ball Bearing Speedometer

Ball Bearing Speedometer frame.

Needs two photodiodes, two LEDs (Amazon sells packs with both of these), an Arduino or similar microcontroller, two 10M resistors, and two 220 ohm resistors.

The frame should print with no supports, although I'm still working on the best way to print the track connectors.

(See https://www.paleotechnologist.net/?p=4740 for description.)

Print Settings

Printer Brand:

Monoprice

Printer:

Maker Select Plus

Rafts:

No

Supports:

No

Resolution:

200

Infill:

20

Filament: Amazon PLA Black