L297 + L298 circuit not working

Question

I have paired up L297 and L298 together to make a bipolar stepper driver. My schematics are :

I have hooked up the step and direction pin number 4 and 5 respectively on Arduino. I am using a 5V power supply from a DC adaptor

The code I'm using is:

#define stepPin 4
#define dirPin 5

void setup() {
    Serial.begin(9600);
    Serial.println("Starting stepper exerciser.");

    pinMode(stepPin, OUTPUT);
    pinMode(dirPin, OUTPUT);

    digitalWrite(dirPin, HIGH);
    digitalWrite(stepPin, LOW);
}

void loop() {
    int i, j;

    for (i=1000; i>=200; i-=100) {
        Serial.print("Speed: ");
        Serial.println(i);

        for (j=0; j<2000; j++) {
            digitalWrite(stepPin, HIGH);
            delayMicroseconds(i);
            digitalWrite(stepPin, LOW);
            delayMicroseconds(i);
        }
        delay(500);
        digitalWrite(dirPin, !digitalRead(dirPin));

        for (j=0; j<2000; j++) {
          digitalWrite(stepPin, HIGH);
          delayMicroseconds(i);
          digitalWrite(stepPin, LOW);
          delayMicroseconds(i);
        }
        delay(1000);
        Serial.println("Switching directions."); 
        digitalWrite(dirPin, !digitalRead(dirPin));
    }
}

I am using NEMA17 bipolar 5V motors , the data sheet can be found here : datasheet

Motor specs are here

I have also tried L297 with L293d , but the things aren't working the way they should.

Most probably the issues are with the oscillator or the clock pin (may be the pulse is not generating ), before posting the question , I had a quick google search which showed me I was not the only onne facing this issue.

Answer 1

Try this code, and change pin number to your like. if this code work, likely the problem is in the delayMicroseconds number, some Stepper motor only work on higher than 300 and some on more higher number. when delayMicroseconds number too low, it will stall and sometime only humming.

when powerup, motor will spin clockwise, and if you push button, it's will delay 1 second, and start spin counterclockwise.

int val = 0; // push value from buttons pin
int jalan = 0;//moving status
int ditekan = 0;//push status
void setup() 
{
  pinMode(12, OUTPUT); //Enable
  pinMode(11, OUTPUT); //Step
  pinMode(10, OUTPUT); //Direction
  pinMode(4, INPUT); //push button

  digitalWrite(12,LOW);

}

void loop() 
{
  val = digitalRead(4);// read the push button value
  if(val == HIGH){
    ditekan = 1-ditekan;
    delay(1000);
  }
jalan = val;
if(ditekan == HIGH) {

    digitalWrite(10,HIGH);
    digitalWrite(11,HIGH);
    delayMicroseconds(500);
    digitalWrite(11,LOW);
    delayMicroseconds(500);
    } else {
    digitalWrite(10,LOW);
    digitalWrite(11,HIGH);
    delayMicroseconds(500);
    digitalWrite(11,LOW);
    delayMicroseconds(500);
    }
    //delay(1);
}