slotted wheel

opto-interrupter or encoder wheel

Maker/DIY

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Description

32-slot wheel, 80 mm in diameter, hole for 5 mm shaft with M3 setscrew. This has beveled vanes so it is closer to a knife-edge, than a simple 90-degree slot edge. All dimensions, number of vanes, etc. are parameters in OpenSCAD file. I wanted the somewhat large size you see in the photo, but for other purposes you might want a smaller one. Measuring the output timings of this wheel in motion with an opto-interrupter circuit, it looks like the total variation in the width of the openings is about 0.2 mm (5% of the ~4mm slot), with my printer (Ultimaker 2).
Remixed from "open-source chopper wheel" thing:28121 by jpearce.

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668fc223d5a8c981b774018d3eed1529?default=blank&size=40Jakub Jelínek added this to the to test collection ago
19058bd73fcdd07df955f84cb1c47e37?default=blank&size=40sapimen added this to the teste collection ago
4bdad08b8feb871572a81eeeca8b5254?default=blank&size=40jin dong added this to the useful collection ago
Dfe5d99e6e5229932c9d918febcd48e0?default=blank&size=40Chema added this to the Cnc collection ago
B21da4db0cf3410d41103e3338b481fd?default=blank&size=40ProjectCentral added this to the UTILITY collection ago
C547b810270b9980d0200c7f15c58e0a?default=blank&size=40ThomasBe added this to the tools collection ago
Mini jb computerjbeale published this design ago