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[[File:wiring_scheme_controllers_single.png|600px]]
[[File:wiring_scheme_controllers_single.png|600px]]
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You can leave disconnected the two purple wires. It's more comfortable to connect it after pluging the Main Ribbon Bus to the RBPi.
'''Note:''' While connectig the wires, the red wire of the Main Ribbon Bus must be at left. The red wire is ALWAYS the #1!
'''Note:''' While connectig the wires, the red wire of the Main Ribbon Bus must be at left. The red wire is ALWAYS the #1!