No problem. I understand if you don't have one to give up for science. Surely someone has something?
I sent that graph to a gearhead buddy of mine. He replied, "No wonder you are having issues. Your cam is machined upside down!"
Here is the setup - Two chinese digital calipers ($10x2), an Arduino Uno clone ($12), an encoder ($18), and some random hardware/electronics misc I had lying around. So about $50.
I had all intentions of hot gluing the encoder to the cam but hot glue does
not stick to steel. Tape looks very sloppy but appears to work fine. Rubber bands are applying the downward pressure on the calipers.
