[RyanN]

I made a small portable power supply for this years controller (2 9V batteries in parallel to power the OI) but the OI surges so much that all analog ports mess up. The robot will do very random things if you use the analog ports of the 15pin connectors. We used ours for many things such as our presets, extension and the hold button. The robot would go crazy with the presets, and the extension would work occasionally.