Problem with stepper motor and AccelStepper Library

Using Arduino Motors, Mechanics, Power and CNC
1

Hi guys

I'm driving a Nema 17 stepper motor with the Sb6600 Driver. In my code I'm doing a homing of the motor in setup until an end switch gets activated. Strangely the homing worked, now suddenly the motor won't home anymore. I do get into the while (EndSwitch is HIGH). Everything else in the loop works just fine.
Does anyone have an idea?

#include <LiquidCrystal.h>
#include <AccelStepper.h>


LiquidCrystal lcd(8,9,4,5,6,7);

//AccelStepper stepper; // Defaults to AccelStepper::FULL4WIRE (4 pins) on 2, 3, 4, 5

const int dirPin = 2;
const int stepPin = 3;
#define motorInterfaceType 1

AccelStepper myStepper(motorInterfaceType, stepPin, dirPin);

long int Pot = A0;
long int Pot2 = A1;
long int PotVal;
long int PotVal2;
long int Val;
long int Val2;
long int TargetStep;
int EndSwitch = 13;

void setup() {

pinMode(Pot, INPUT);
pinMode(Pot2, INPUT);
pinMode(EndSwitch, INPUT_PULLUP);
Serial.begin(9600);

  lcd.begin(16,4);

  lcd.setCursor(0,0);

  lcd.print("Homing Motor");

  myStepper.setMaxSpeed(1000);
  myStepper.setAcceleration(50);
  myStepper.setSpeed(100);

//int End = digitalRead(EndSwitch);

delay(50);

while(digitalRead(EndSwitch)){
  myStepper.move(-10000);
  myStepper.run();
  delay(5);

}

  delay(500);
  myStepper.setCurrentPosition(-2000);
  
lcd.setCursor(0,0);
lcd.print("Homing Complete!");

delay(1000);


}
2

In the way how you did it the motor will keep moving even when the switch is disconnected.

The switch should be normally closed.

Try this:

3

Make a test sketch exercising just the end switch. Measuring using a DMM could also work.

4

To achieve maximum security, yes. For this project, not the cause of the trouble.

5

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