Stepper help needed
 

Hi

I've build the stepper pcb type A and connect a 12V steppermnotor on a separate 12V powersupply.
When I connect pin 1 of the Atmel nothing happens at all,pin1 disconnect and of he goes.

The problem is that the steppermotor starts to turn as a normal motor and never stops.Any idea's how can?I route the stepper for flaps contoll,because I like tohave a anlog flapsgauge on my MCP.

The second one is how, to control the max.speed of the motor?

Kind regards

Jan Geurtsen