Recently I just bought a Big Easy Driver and a stepper like this https://www.sparkfun.com/products/10847. I connected 4 stepper wires(green, black, red and blue) to the BED. Then I connected to M+ and Gnd 12v. Also I ran a simple arduino sketch
void setup() {
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
digitalWrite(8, LOW);
digitalWrite(9, LOW);
}
void loop() {
digitalWrite(9, HIGH);
delay(100);
digitalWrite(9, LOW);
delay(100);
}
But the stepper didn’t move or even jittered. I measured a voltage on AA and BB headers and it was equal to zero.
What I did wrong or it is a problem with BED?