Work in progress of battery tube design with voltage regular.

Design consisting of clear tube (for leak indication) using 4 cells and voltage regular for motors.

Non regulated power direct connect to Beagle Bone Cape. Heat sink required.

 Impact-Resistant Polycarbonate Round Tube 1-1/4" OD, 1-1/8" ID, Clear http://www.mcmaster.com/#8585K63

DC to DC converter

http://www.ebay.com/itm/DC-4-5-30V-0-8-30V-5A-Step-Down-Converer-Vo...