Pimoroni protopal prototyping board for raspberry pi a b and pi 2 pimoroni protopal the protopal is an affordable prototyping board designed to be used with the raspberry pi a b and pi 2 the protopal features 288 prototyping holes 2x separate power rails and a fully broken out gpio for maximum convenience br br iframe width 560 height 315 src https www youtube com embed mnk4b9 odyo rel 0 frameborder 0 allowfullscreen iframe pimoroni protopal for raspberry pi a b