Pulley and Slotted Wheel for 4 RPM gearmotor
thingiverse
Human spins a motorized system to control the vent louvers in cars by attaching a pulley and slotted wheel onto an output gear of a surplus 12V 4 RPM gearmotor. This specific motor has previously been sold through AllElectronics.com and Amazon, with the product code B003XKVNUA on http://www.amazon.com/. The assembly includes standoffs for the three mounting holes and also provides OpenSCAD files to build custom pieces such as a version that fits onto 1/2" Sch.40 PVC pipe. This motor system can be paired with an opto-sensor bracket found at http://www.thingiverse.com/thing:608885. It is showcased in action on the video here: https://www.youtube.com/watch?v=OWIdMYjCm1M
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