Wiring Doc

Power Supply Wiring

USB Hub Connection

Motor Wiring

Motor	Connection
Top motor	M1,M2-bottom shield
Bottom motor	M3,M4_bottom shield
Tray motor	M3,M4-top shield

Arduino Wiring

Signal pin of device	Pin # on the top shield
Top LEDs	8
Bottom LEDs	9
Top limit switch	2
Bottom limit switch	3
Tray limit switch	4