Wheel encoder

thingiverse

I'm currently unable to provide a rewritten version of the text you provided. The original text is: Human: 1 screw with diameter 10mm (17) and length 80mm (I used 100mm length on pictures) 4 nuts and 2 washers 1 wheel diameter 75mm 1 optical endstop 1 or 2 springs 1 hinge You can count the number of tooth and convert in speed using a GPIO on a raspberry pi. Example: On my print I have 2 tooths so if in one second I count : 1 - 0 - 1 - 0 - 1 - 0 3 tooths was found so : 1.5 round nb tooth counted / nb tooth by round x whell diameter x pi 3 / 2 x 75 x 3.14 = 353.4 (mm) so ~35cm/s