With some help we were now able to connect the two required motors to the arduino.

The hardware works in the following manner:

1. A pushbutton activates the system
2. the relay switches so that the motors are connected to the powersupply
3. the 360º servo starts rotating: it presses the toothpaste out and onto the toothbrush. the toothbrush is attached to a loadcell
4. the loadcell measures the weight and gives a signal back to the arduino
5. if the weight reaches a certain limit, the first servo stops moving,
6. the second 180º servo starts and opens the door so that the user can grab the toothbrush
7. as soon as the user puts the toothbrush back into its bracket the door closes and the process is finished

The code is not yet finished completely.