Step 43Build the controller: Connect the boards

The two boards are connected by two cables:

• A ribbon cable for the DATA and Address BUS.
• A 2 wire cable for GND and VCC.

After connecting these two cables, your board is complete.

Step 44Build the controller: Connect the cube

Connect the ribbon cables according to the pin-outs shown in picture 2 and 3.
The ground layer ribbon cable connects to the pin header near the transistor array. If the cube is upside-down, just plug it in the other way.