Problemen met schakelaar en stappen motor

op Motor Shield - Arduino motor/stepper/servo control lees ik

The following pins are in use if any DC/steppers are used
Digital pin 4, 7, 8 and 12 are used to drive the DC/Stepper motors via the 74HC595 serial-to-parallel latch

en ook

All 6 analog input pins are available. They can also be used as digital pins (pins #14 thru 19)

Digital pin 2, and 13 are not used.

probeer eens met 1 van de vrije pinnen.
Jantje