// https://wokwi.com/projects/442675760429265921
// Simulate potentiometer positional feedback of a stepper position 
// https://wokwi.com/projects/410058296261374977
// Other example simulations https://forum.arduino.cc/t/wokwi-simulations-for-arduino-built-in-examples/1304754
// This simulation uses
//   https://github.com/drf5n/Wokwi-Chip-LimitCounter
//   https://github.com/Dlloydev/Wokwi-Chip-Scope 

#include <AccelStepper.h>

// Define a stepper and the pins it will use
AccelStepper stepper(AccelStepper::DRIVER,4,3);

const int TARGET_POT = A0;
const int FEEDBACK_POT = A1;

void setup()
{  
  stepper.setMaxSpeed(500);
  stepper.setAcceleration(2000);
}

void loop()
{
  // Read new target and feedback
  int target = analogRead(TARGET_POT);
  int pot = analogRead(FEEDBACK_POT);
  int error = pot-target;
  if(abs(error) <=1){ // deadband
    stepper.move(0);
  }
  else{ 
    stepper.move(-error); // move towards target
  }

  stepper.run();
}