led protoboards features: ? ) 5 o d p l q d w h y w k l f n ? prototyping holes spaced on a 0.1" x 0.1" grid ? hole interior diameter = 0.037" ? plated through holes with pads on both sides of board 7 z l q , q g x v w u l h v led-series prototyping boards s u r vide a versatile solution for led projects. the boards have white soldermask to enhance led luminosity, common bus power trace, locations for resistors to control individual leds, prototyping area for drivers, and locations for other components. 3 $ 5 7 1 8 0 % ( 5 LED20-14 (front view) % r ard v l ] h 1 0 x 4.0" 3 $ 5 7 1 8 0 % ( 5 LED20-14 (rear view) % r ard v l ] h 1 0 x 4.0" ) r u d g g l w l r q d o s u r g x f w l q i r u p d w l r q s o h d v h y l v l w z z z w z l q g l q g f r p & |