amazing, I had no idea they existed thank you!! What is a shift register and why might I want one..?
Wait, there's another problem... On one of the other switch plates there are lots of LEDs, and they seem to all be fed by one of these transistors (any idea what the operating voltage is?) http://www.farnell.com/datasheets/43606.pdfIt seems for these LEDs that I need to switch the ground to light them. What's the best way of doing this with arduino?Thanks!