If you are building the surface, can you not incorporate resistors into the surface?
In fact, is the surface grounded - could you not make the reference, the 5 V positive and connect the anodes of the diodes to that?
If you are building the surface, can you not incorporate resistors into the surface?
In fact, is the surface grounded - could you not make the reference, the 5 V positive and connect the anodes of the diodes to that?