What I have now is..
[url=https://www.openhardware.io/view/366/Automatic-stairs-led-lighting-arduino-shield#tabs-instructions[/url]
I know what you want to know. Just ask.. 3x 74HC595D connected with D6, D7 and D8. All sensors are analoge and futher on the digital channels are D2 D9 D11 and D12 used.