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[P] Micro Motor and Belt

A project log for Tetrinsic [gd0041]

A motorised fader that is continuous, pressure sensitive, haptic and water resistant.

kelvinakelvinA 12/11/2022 at 21:320 Comments
I expected this motor to be larger when I was excitingly opening packages. I've also got a 98T belt. Perhaps I should've also bought other sizes so that I could try them, but I also wanted to spend the bare minimum. At least now that I've got the motor, I can get accurate measurements and potentially even solder the flex cable straight to the board as if this was a professional product and it was by design.

The "cogging" as people in the SmartKnob project call it (the dedent feeling) is perhaps <25% of a mouse scroll wheel which itself is <25% of a Nema 17 extruder.

I think the construction of the motor is actually metal instead of black plastic. The weight is 10.0g and the belt is 0.8g. Cable pitch is 1mm and length from the edge of the main circumference is 17mm (so I'd likely have to solder an extension). The rear screw rotates with the rotor. Flat edge of the base (the one side that doesn't havea mounting hole) is 6mm. Mounting hole tabs are 4mm wide, 1mm thick. Hole is 2mm. Edge-to-edge length is 24mm.

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