how to change speed on accelstepper

Using Arduino Motors, Mechanics, Power and CNC
#1

Hi guys i need an aplication where i can set the speed for the steeper motor and a button to start movement

im using a

DM860H driver

Motor Nema 34 1696oz/in 122kg/cm
4.0Amps
1.4Ohms
Bipolar 8 cables

limit swith and a potenciometer

im current able to start the stepper when i press the button but im unable to change speed with the potenciometer , i been trying for hours and diferent code but i cant make it work together any help will be very appreciated

my code

#include <AccelStepper.h>
AccelStepper stepper(AccelStepper::DRIVER,7,6);
int buttonPin = 2;
int buttonState;
int ledpin = 13;
int motorSpeed = 9600; 
int motorAccel = 100000; 
int speedVal = 0;
int speedControl = A0;
 
void setup()
{ 
   Serial.begin(9600);
 stepper.setMaxSpeed(motorSpeed);
 //stepper.setSpeed(motorSpeed);
 stepper.setAcceleration(motorAccel);
pinMode(buttonPin, INPUT_PULLUP);
pinMode(ledpin, OUTPUT);
}
 
void loop()
{
      

buttonState = digitalRead(buttonPin);

//int sensorValue = analogRead(speedAnalog);
//  speedStepper = map((analogRead(speedAnalog)),0,1023,2000,50);

 if (buttonState == LOW){
  digitalWrite(ledpin,HIGH);
   stepper.moveTo(60000);
    stepper. run(); 
 }
  if (buttonState == HIGH){
    digitalWrite(ledpin,LOW);
    stepper.stop();
    stepper.runToPosition();
   stepper.setCurrentPosition(0);
 }    
}

after adding the analogodRead my stepper get really slow and also dont change speed , please help

#2

Do not perform the analogRead() every pass through the loop. Place it on a "blink without delay" millis() timer and execute the analogRead() read every 250 or 500 ms.

#3

cattledog:
Do not perform the analogRead() every pass through the loop. Place it on a “blink without delay” millis() timer and execute the analogRead() read every 250 or 500 ms.

that it thanks @cattledog with your help i was manage to do all that i need

for reference this is my final code

#include <AccelStepper.h>
AccelStepper stepper(AccelStepper::DRIVER,7,6);
int buttonPin = 2;
int buttonState;
int ledpin = 13;
int motorSpeed = 7000; 
int motorAccel = 100000; 
int speedVal = 0;
int speedControl = A0;
int speedStepper = 0;

unsigned long previousMillis = 0;        // will store last time LED was updated
long OffTime = 750;          // milliseconds of off-time

 
void setup()
{ 
   Serial.begin(9600);

pinMode(buttonPin, INPUT_PULLUP);
pinMode(ledpin, OUTPUT);
}
 
void loop()
{

  unsigned long currentMillis = millis();
buttonState = digitalRead(buttonPin);
  if ((buttonState == LOW) && (currentMillis - previousMillis >= OffTime)){
     speedStepper = map(analogRead(A0), 0, 1023, 100, 7000);
     Serial.println(speedStepper);
        stepper.setMaxSpeed(speedStepper);
        stepper.setAcceleration(motorAccel);
  }

  

 if (buttonState == HIGH){

  digitalWrite(ledpin,HIGH);
   stepper.moveTo(60000);
    stepper. run(); 
 }
  if (buttonState == LOW){
    digitalWrite(ledpin,LOW);
    stepper.stop();
    stepper.runToPosition();
   stepper.setCurrentPosition(0);
 }    
}

must be a better way as always but im too tired to keep testing , thanks agaian

#4