Hi all,
I need your help. I'm doing an Arduino project to control step motor go up and down till I release button. But when I push the button, my step just keeps running over and over. Could you please tell me what I'm doing wrong?
Thank you so much for taking time to read my noob question.
Here is my code
// chuong trinh chay may han cell pin
// A0 noi chan giua trimer chinh thoi gian
// D2 ra Pedal dieu khien han
// D3 chan dieu khien step
// D12 tin hieu ra SSR
// D13 den bao hien thi
// D9 stepp
// D8 Dir
//
//
//
//
//
//--------------------------------------------------------------------------------------
// INCLUDES
//--------------------------------------------------------------------------------------
#include <Wire.h> // I2C Library
#include <Adafruit_SSD1306.h> // OLED driver Library
//--------------------------------------------------------------------------------------
// DEFINES
//--------------------------------------------------------------------------------------
#define OLED_RESET 4
#define timerPin 12
#define DIR_PIN 8
#define STEP_PIN 9
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
//--------------------------------------------------------------------------------------
// OBJECTS
//--------------------------------------------------------------------------------------
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); //create instance of OLED
//--------------------------------------------------------------------------------------
// VARIABLES
//--------------------------------------------------------------------------------------
int controlValue = 0;
int timerValue = 0;
int j = 0;
int period = 500;
unsigned long time_now = 0;
long lastDebounceTime = 0; // the last time the output pin was toggled
long debounceDelay = 50; // the debounce time; increase if the output flickers
//--------------------------------------------------------------------------------------
// MAIN PROGRAM
//--------------------------------------------------------------------------------------
void setup()
{
Serial.begin(9600);
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
delay(10);
display.clearDisplay();
display.setTextSize(1); // set text size
display.setTextColor(WHITE);
display.setCursor(25,0); // set cursor upper left
display.println("Timer Control");
display.println(" ");
display.println("Software V2.2");
display.println(" ");
display.println("by Embehu");
display.display();
delay(1000);
display.clearDisplay();
pinMode(timerPin, OUTPUT);
pinMode(2, INPUT_PULLUP); // set D2 as input
pinMode(3, INPUT_PULLUP); // set D3 as input
pinMode(DIR_PIN, OUTPUT);
pinMode(STEP_PIN, OUTPUT);
digitalWrite(STEP_PIN, LOW);
digitalWrite(DIR_PIN, LOW);
}
void loop()
{
time_now = millis();
int Switch = digitalRead(2);
int Switch1 = digitalRead(3);
int controlValue = analogRead(A0);
int timerValue = map (controlValue, 0, 1023, 0, 100);
j = timerValue*2;
//-----------------------Display Function--------------------------------------------
//----------------------------------------------------------------------------------
display.setTextSize(1); // set text size
display.setCursor(0,0);
display.print("Time Setting"); // print title
display.drawLine(0, 10, 128, 10, WHITE);
display.setCursor(32,32);
display.setTextSize(4);
display.print(j); // print timer
display.setTextSize(1);
display.print(" mS");
display.display(); // display all we just printed
while(millis() < time_now + period){ //wait approx. [period] ms
display.clearDisplay(); // clear display
}
// check if the pushbutton is pressed. If it is, the buttonState is LOW:
if ( (millis() - lastDebounceTime) > debounceDelay) {
if (Switch == LOW) {
rotateDeg(1800, 1);
digitalWrite(timerPin, HIGH);
digitalWrite(13, HIGH);
delay(timerValue); // pre-weld time
digitalWrite(timerPin, LOW);
digitalWrite(13, LOW);
delay(500);
digitalWrite(timerPin, HIGH);
digitalWrite(13, HIGH);
delay(j); // weld time
digitalWrite(timerPin, LOW);
digitalWrite(13, LOW);
rotateDeg(-1800, 1);
lastDebounceTime = millis(); //set the current time
}
}
if (j == 10) {
while (Switch1 == LOW){
digitalWrite(DIR_PIN, HIGH);
digitalWrite(STEP_PIN, HIGH);
delayMicroseconds(70);
digitalWrite(STEP_PIN, LOW);
delayMicroseconds(70);
if (Switch1 == HIGH){
break;
}
}
}
if (j == 14) {
while (Switch1 == LOW){
digitalWrite(DIR_PIN, LOW);
digitalWrite(STEP_PIN, HIGH);
delayMicroseconds(70);
digitalWrite(STEP_PIN, LOW);
delayMicroseconds(70);
if (Switch1 == HIGH){
break;
}
}
}
}
void rotateDeg(float deg, float speed){
//rotate a specific number of degrees (negitive for reverse movement)
//speed is any number from .01 -> 1 with 1 being fastest - Slower is stronger
int dir = (deg > 0)? HIGH:LOW;
digitalWrite(DIR_PIN,dir);
int steps = abs(deg)*(1/0.225);
float usDelay = (1/speed) * 70;
for(int i=0; i < steps; i++){
digitalWrite(STEP_PIN, HIGH);
delayMicroseconds(usDelay);
digitalWrite(STEP_PIN, LOW);
delayMicroseconds(usDelay);
}
}
