I have the basics out for this project. The robot part will be incorporated later.
Right now this is the setup:
solar panel -> battery box -> output
soon it will be:
solar panel -> battery box -> output panel ->output
Battery box-> NXT <-> output panel
Two series circuits that are interconnected.
There is more than a SPDT switch in the battery box, but this is for simplicity.
The NXT would be connected to the blue and green wires through an RCX end and 2 cables to Port A and Port 2 The program is done, but it needs to be edited.