Here is a link to the .pdf:
http://info.bannerengineering.com/xp...ure/129721.pdf
The reflective tape is roughly an inch away from the center to the wheel, and the radius of the wheel is roughly two inches.
Our team uses LabView to program our robot, and we are using the Counter Get vi to get the period. We then divide one by the period, then multiply the value by 60 to get our RPM. Attached is a screenshot of the code. The Boolean input is the "run shooter motors" button. The only real output is the Output indicator. The others, including the waveform chart, are there so we can monitor the value in the program during testing.
Apologies for the misuse of terminology. That was just the best way I could think of to describe the way that we coded the system.