Its a homebrewed one that uses 2 AA rechargables. Interesting build overall. Not so sure I would do it since there are many cheap bought solutions now.
http://www.instructables.com/id/The-Arduino-AA-Undershield/?ALLSTEPS
Its a homebrewed one that uses 2 AA rechargables. Interesting build overall. Not so sure I would do it since there are many cheap bought solutions now.
http://www.instructables.com/id/The-Arduino-AA-Undershield/?ALLSTEPS