>> For ground, all the unused space >> For power 0.1" if possible. Keep in mind that the critical high speed parts of VG's design are =20 mostly on that UBW32 daughter-board, which has its own proven (more or =20 less) layout. A bunch of LEDs and relay drivers doesn't need to be =20 too over-designed. BillW --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .