Hackaday Kinect and Raspberry Pi Add Focus Pulling to DSLR Hackaday Aiming for a better system than the stock autofocus, [Tom] grafted a Kinect sensor and a stepper motor actuator to a Raspberry Pi , and used the Kinect's depth map to drive the focus ring.

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Kinect and Raspberry Pi Add Focus Pulling to DSLR – Hackaday