Left View of Marauder. You can see the Line Sensor circuit board pretty clearly here. Bigger...

Here's a closeup of the line sensor circuit. It's basically just a replication of the circuitry for the original three line sensors. Bigger...

This is the back side of the line sensor. You can also clearly see the connectors which serve both to mount the board and deliver the appropriate signals to the board. This pin at the bottom (out of focus) doesn't connect electrically to anything. It just provides a mounting point. Bigger...

I wasn't sure where else to put this, so it wound up here. This shows the I/O Interface for the PIC. I got tired of couting pins, so I created a a paper template which can be pressed down on the pins to provide labels. A PostScript version and a PDF version are both available. Bigger...