I need guidance to write a program to run stepper motor with three buttons.
a. With button 1, stepper shall start to run single step and count number of steps it run.
b. With button 2 freezes the number of steps it ran.
c. and when button 3 is pressed, motor should run freezed number of steps in same direction and shall stop after run.
d. After that when ever button 3 is pressed it should run same number steps until reset button is pressed.
I tried to write program but not satisfied with that
#include <AccelStepper.h>
#define HALFSTEP 8
#define motorPin1 8 // IN1 on ULN2003 ==> Blue on 28BYJ-48
#define motorPin2 9 // IN2 on ULN2004 ==> Pink on 28BYJ-48
#define motorPin3 10 // IN3 on ULN2003 ==> Yellow on 28BYJ-48
#define motorPin4 11 // IN4 on ULN2003 ==> Orange on 28BYJ-48
AccelStepper stepper(HALFSTEP, motorPin1, motorPin3, motorPin2, motorPin4);
int Distance = 0;
long initial_homing = 1;
void setup() {
Serial.begin(9600);
pinMode(5, INPUT_PULLUP); // Button to initiate steps to move
pinMode(6, INPUT_PULLUP); // Button to freeze steps to be moved by stepper
pinMode(7, INPUT_PULLUP); // Button to Start the motor to run
}
void loop() {
distanceTomove();
Run_motor();
}
void distanceTomove() {
stepper.setMaxSpeed(1000);
stepper.setSpeed(100);
stepper.setAcceleration(1000); // Set Acceleration
if (digitalRead(5) == LOW) {
stepper.moveTo(initial_homing);
initial_homing++;
delay(5);
stepper.runSpeedToPosition();
}
if (digitalRead(6) == LOW) {
Distance = initial_homing;
}
}
void Run_motor() {
stepper.setMaxSpeed(1000);
stepper.setSpeed(500);
stepper.setAcceleration(1000); // Set Acceleration
if (digitalRead(7) == LOW) {
stepper.moveTo(-Distance);
stepper.runSpeedToPosition();
}
}
It is not working as intended.
a. It runs with button 1 and counts numbers of steps it ran.
b. with button 2 it doesn't freezes steps
c. with button 3, it return in reverse direction instead of forward.
d. it doesn't start again when button 3 is pressed again after completion of first cycle
Take a piece a paper and a pencil and design a program structure based on the IPO model before start coding.
The basics for coding the project are to be found in the IDE as examples.
Have a nice day and enjoy coding in C++.
p.s.
You might start with a function called button manager and a function to control the stepper in CW,CCW and Stopp.
I think that button 1 starts the stepping, button 2 stops the stepping.
Button 1 doesn't need pressing for each step, it just starts the learning process and button 2 stops and saves it..
OR
Button 1 makes a step on each application.
Button 2 saves the count puts the controller back ready to either relearn or do the auto steps when Button 3 is pressed.
Yes. Now I am puzzled how to skip "DistanceToMove" so that it does not go in this loop and whenever button 3 is pressed motor should run saved steps only every time.
I hope .move() is blocking.
That would be my idea ... but I don't have your hardware:
untested:
#include <AccelStepper.h>
#define HALFSTEP 8
#define motorPin1 8 // IN1 on ULN2003 ==> Blue on 28BYJ-48
#define motorPin2 9 // IN2 on ULN2004 ==> Pink on 28BYJ-48
#define motorPin3 10 // IN3 on ULN2003 ==> Yellow on 28BYJ-48
#define motorPin4 11 // IN4 on ULN2003 ==> Orange on 28BYJ-48
AccelStepper stepper(HALFSTEP, motorPin1, motorPin3, motorPin2, motorPin4);
int distance = 0;
const uint8_t startPin = 5;
const uint8_t stopPin = 6;
const uint8_t replayPin = 7;
enum State {IDLE, LEARN, REPLAY} state;
void initStepper() {
stepper.setMaxSpeed(1000);
stepper.setSpeed(100);
stepper.setAcceleration(1000); // Set Acceleration
}
void runFSM() {
switch (state) {
case IDLE :
if (digitalRead(startPin) == LOW) {
state = LEARN;
Serial.println(F("LEARN"));
}
if (digitalRead(replayPin) == LOW) {
state = REPLAY;
Serial.println(F("REPLAY"));
}
break;
case LEARN:
if (digitalRead(stopPin) == LOW) {
state = IDLE;
Serial.println(F("IDLE"));
}
stepper.move(1);
distance++;
delay(100); // just a dirty delay to slow down the movement
break;
case REPLAY:
Serial.print(F("steps to go ")); Serial.println(distance);
stepper.move(distance);
state = IDLE;
break;
}
}
void setup() {
Serial.begin(115200);
pinMode(startPin, INPUT_PULLUP); // Button to initiate steps to move
pinMode(stopPin, INPUT_PULLUP); // Button to freeze steps to be moved by stepper
pinMode(replayPin, INPUT_PULLUP); // Button to Start the motor to run
initStepper();
}
void loop() {
runFSM();
stepper.run(); // triggers the stepper if necessary
}
a. you are correct.
b. With button 3 pressed, it moves back to zero position. While intended is, it should move in one direction only. It should not return to Zero position.
