Sparkfun arduino uno and breadboard holder sparkfun dev 11235 p the arduino and breadboard holder from sparkfun lets you manage your prototypes better by keeping the breadboard and the arduino side by side it has two indents you can stick a breadboard down in one and screw the arduino to the support posts in the other in fact the support posts have been cunningly designed to let you mount a whole range of dev boards such as the uno leonardo fez panda or similar board with just two scr