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.
Power source is 5V (already mentioned in question )
yes but you didn't specify if this was only for L297 and your schematic shows 36v supply for L298 so I can't make assumptions. So you drive L297/L298 with the same 5v that you use for the Arduino, what is the max current it can provide? Also what is the Vref applied in pin #15 of L297? \$\endgroup\$