[marccenter]

Ether,

I am planning on using one of the three Rockwell Automation light sensors provided in the 2011 FRC KOP, PN 42EF-D1MNAK-2.
The shooter wheel is either a six or eight inch direct driven by a CIM (1000 to 5000 rpm, 2000-3000 rpm typical).
I was planning on using a piece of reflective tape, like one inch square, my goal being about double the size of the sense eye. My goal was to place the reflective tape near the edge of the wheel on one of the spokes.
Because of the rather high speed I believe only one signal per rev is sufficient for crude speed measurement and control. There is no plan for position based control.