About two years ago I found a schematic that showed how to wire an Arduino 4 channel relay with another 4 channel relay shield to allow the Arduino to control all 8 relays. Like an idiot I did not copy it. Does anyone know where I can find it? I have many Seeed 4 relay shields (v1.2) and I need to make a few 8 relay projects. Basically, one shield sat on top of the Arduino and the other was wired so the Arduino could address its 4 relays also. I cannot find that info or image anywhere now. Any help would be greatly appreciated.