I have been using an Arduino Uno and a Adafruit Motorshield V2.3 to control a 4 wire (bipolar) NEMA 17 12V stepper. Currently using an external AC to DC 12V power source. I am running the "Stepper Test" example file from the Adafruit Motor Shield V2 library. The file will successfully verify and upload, but the stepper motor does not turn. I am getting frustrated as I know what I am trying should be very simple.
I have included a picture of the MotorShield setup as well as the Nema 17 stepper motor.
Thanks for any advice,
BigBurd
/*
This is a test sketch for the Adafruit assembled Motor Shield for Arduino v2
It won't work with v1.x motor shields! Only for the v2's with built in PWM
control
For use with the Adafruit Motor Shield v2
----> Adafruit Motor/Stepper/Servo Shield for Arduino v2 Kit [v2.3] : ID 1438 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
*/
#include <Wire.h>
#include <Adafruit_MotorShield.h>
// Create the motor shield object with the default I2C address
Adafruit_MotorShield AFMS = Adafruit_MotorShield();
// Or, create it with a different I2C address (say for stacking)
// Adafruit_MotorShield AFMS = Adafruit_MotorShield(0x61);
// Connect a stepper motor with 200 steps per revolution (1.8 degree)
// to motor port #2 (M3 and M4)
Adafruit_StepperMotor *myMotor = AFMS.getStepper(200, 2);
void setup() {
Serial.begin(9600); // set up Serial library at 9600 bps
Serial.println("Stepper test!");
AFMS.begin(); // create with the default frequency 1.6KHz
//AFMS.begin(1000); // OR with a different frequency, say 1KHz
myMotor->setSpeed(10); // 10 rpm
}
void loop() {
Serial.println("Single coil steps");
myMotor->step(100, FORWARD, SINGLE);
myMotor->step(100, BACKWARD, SINGLE);
Serial.println("Double coil steps");
myMotor->step(100, FORWARD, DOUBLE);
myMotor->step(100, BACKWARD, DOUBLE);
Serial.println("Interleave coil steps");
myMotor->step(100, FORWARD, INTERLEAVE);
myMotor->step(100, BACKWARD, INTERLEAVE);
Serial.println("Microstep steps");
myMotor->step(50, FORWARD, MICROSTEP);
myMotor->step(50, BACKWARD, MICROSTEP);
}
Thank you so much for your help!
