At our Youtube channel, I have uploaded the final version of the Candy Rotation Stock (CRS). In the picture below, you see the CRS in the test set-up.
Take a look at the video below to see the CRS in action. In this test set-up, the NXT brick simulates the Buffer Control brick that is connected to the PC. The BC brick receives that chosen color from the PC that has been chosen at the PUI Receiver. The chosen color is passed to the CRS-EV3’s (two EV3’s in daisy chain and therefor not possible to connect them to the PC, see article that describes the problem) using the Motor Protocol.
The CRS is part of the Candy Crane. The Candy Crane is responsible for picking the candy out of the container and deliver it to the wagon.