Many teams still use the Banner sensors that were included in the KoP in the past. However these sensors cost $50+ a piece.
I have been searching for a suitable replacement. The best option I have found so far seems to be this.
http://www.alliedelec.com/search/pro...x?SKU=70048630
However these run on 12v which make them slightly harder to wire than a 5v sensor. The B version is 5v but I haven't found a source that keeps that part number in stock.
Does anyone know of or used a good reflective sensor that can replace the banner sensor?