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The Flotilla Dock is the heart of the Flotilla system. It talks, through serial USB, to all of the Flotilla modules connected to its eight ports. Connect it to your Raspberry Pi with a good quality USB A to micro B cable, and then connect your Flotilla modules to the eight ports with Flotilla cables.
Flotilla Dial Module with Potentiometer and 5 LEDs
The Colour module detects RGB colour, as well as ambient light level. It also has two bright white LEDs to illuminate objects whose colour is being detected.