Tell us about yourself!
"English is not my native language"? - in that case I'm even more impressed, it's better English that most tutorials I've seen, many thanks.
on further examination i find this: pin 1 (marked "-") is ground, as it should be). Pin 2 (marked "+") not connected. Pin 3 is connected to "com" on uln chip, so should be 5v. Pin 4 connected through the LEDs to the motor a to the uln outputs. I put 5v on this aIso. Implies you can split the power to drive a different power stepper? Odd, what do people think?
My setup would do nothing until i realised the pin marked "+" wasn't actually connected to anything (on the motor board). When i connected 5v to both the two pins previously jumpered together (like your image above) it burst into life. Do i have a badly designed motor board?