Here's a picture of the modified RCX with a 9v battery installed. The
circled - in the the top right (front of the RCX with the infrared detector)
and the circled + in the bottom left are the ones that connect to the
microprocessor board.
You can see two 3 pin jumpers, labelled + and -. These jumpers are positioned
so that they're between the AA cells. When both jumpers are installed then
9v batteries can be used. When both jumpers are removed, then 6 AA cells can
be used.
Bigger...
|