Hi Paul! > the next rev will have space for a 6mm 10uF cap across the 5V supply :-) >The main reason I didn't was lack of space, but I think I can just >squeeze one in. If you are out of space you could probably add a 100nF/0805 ceramic SMD capacitor on the input and output of the 7805 on the solder side of the board. Ciao Peter