I've tried to move the value 1,2 and 3 spaces, but the same thing keeps happening. After it hits the 100 value, the last 0 stays frozen in place. I gave you a link below so you can understand better what's going on. The value starts at 74, so if you can somehow fix this problem, you can set the max value to be 99, so it never goes to 100 (I am using a 10K ohm potentiometer).
If i turn the pot a bit too fast, EVERYTHING glitches out - the LCD freezes, the stepper stops rotating and starts twitching, and the pot does not work. The same thing happens if on startup the pot is not at minimum value.
Can this problem be fixed?
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// -------------- Include the following Librarys -------------- //
#include <Wire.h>
#include <hd44780.h>
#include <hd44780ioClass/hd44780_I2Cexp.h>
#include <TimerOne.h>
// -------------- Connect to LCD via I2C -------------- //
//Define the LCD Being used and its settings
hd44780_I2Cexp lcd1(0x27);
// -------------- Defines pins numbers -------------- //
const int stepPin = 3;
const int dirPin = 4;
const int switchPinA = A1;
const int switchPinB = A2;
int customDelay, customDelayMapped; // Defines variables
const int ms1 = 8;
const int ms2 = 9;
const int ms3 = 10;
int switchPinAVal = 0;
int switchPinBVal = 0;
enum class MotorControl { CLOCKWISE, ANTICLOCKWISE, STOP } ; //MD1
volatile MotorControl motorControl = MotorControl::STOP ; //initial state //MD1
//--------------------------MIN & MAX Potentiometer Settings-------------------------------//
// Define our maximum and minimum speed in steps per second (scale pot to these) //
void setup() {
Serial.begin( 115200 ) ; //MD1
Serial.println(F("Motor Controller")) ; //MD1
// -------------- Initiate the LCD -------------- //
lcd1.init(); // initialize the lcd
lcd1.init(); // initialize the lcd
lcd1.backlight(); // turn on backlight
lcd1.begin(16, 2);
// -------------- On power up display on the LCD intro -------------- //
lcd1.print("Speed:");
lcd1.setCursor(11, 0);
lcd1.print("n/min");
lcd1.setCursor(0, 1);
lcd1.print("Direction:");
pinMode(switchPinA, INPUT_PULLUP);
pinMode(switchPinB, INPUT_PULLUP);
pinMode(stepPin, OUTPUT);
pinMode(dirPin, OUTPUT);
pinMode(ms1, OUTPUT);
pinMode(ms2, OUTPUT);
pinMode(ms3, OUTPUT);
Timer1.initialize( 5000 ); //start 5mS
Timer1.attachInterrupt( motorController ) ; //MD1
}
// -------------- Begin Loop , Begin Operating Machine -------------- //
void loop()
{
switchPinAVal = digitalRead(switchPinA);
switchPinBVal = digitalRead(switchPinB);
if (switchPinAVal == HIGH && switchPinBVal == LOW)
{
// motorRunClockwise(); //MD1
motorControl = MotorControl::CLOCKWISE ; //MD1
// -------------- Update LCD to ">>>>>>" -------------- //
lcd1.setCursor(10, 1);
lcd1.print(">>>>>>");
}
if (switchPinAVal == LOW && switchPinBVal == HIGH)
{
// motorRunAntiClockwise();
motorControl = MotorControl::ANTICLOCKWISE ; //MD1
// -------------- Update LCD to "<<<<<<" -------------- //
lcd1.setCursor(10, 1);
lcd1.print("<<<<<<");
}
//else
if (switchPinAVal == HIGH && switchPinBVal == HIGH || switchPinAVal == LOW && switchPinBVal == LOW)
{
motorControl = MotorControl::STOP ; //MD1
digitalWrite(stepPin, LOW); // stop the motor
// -------------- Update LCD to "STOP" -------------- //
lcd1.setCursor(10, 1);
lcd1.print(" STOP ");
}
static int speedControlUsLast = -1 ;
int speedControlUs = speedControl() ;
if ( speedControlUs < 50 ) speedControlUs = 50 ; // can't be too low
if ( speedControlUs != speedControlUsLast ) {
Timer1.setPeriod( speedControl() ) ; // microseconds
speedControlUsLast = speedControlUs ;
}
}
void motorController() {
static bool toggle = false ; // we make two entries here per cycle
if ( motorControl == MotorControl::STOP ) {
// handle stop here
}
else {
if ( toggle == false ) {
digitalWrite(stepPin, HIGH);
}
else {
if ( motorControl == MotorControl::CLOCKWISE ) {
// clockwise
digitalWrite(dirPin, LOW);
}
else if ( motorControl == MotorControl::ANTICLOCKWISE ) {
digitalWrite(dirPin, HIGH);
}
else {
// should not happen
}
digitalWrite(ms1, HIGH);
digitalWrite(ms2, HIGH);
digitalWrite(ms3, HIGH);
digitalWrite(stepPin, LOW);
}
toggle = ! toggle ;
}
}
// -------------- Function for reading the Potentiometer -------------- //
int speedControl() {
int customDelay = analogRead(A0); // Reads the potentiometer
int newCustom = map(customDelay, 0, 1023, 0, 4000); // Converts the read values of the potentiometer from 0 to 1023 into desireded delay values (0 to 4000)
// -------------- Update LCD to "Potentiometer value" -------------- //
lcd1.setCursor(6, 0);
lcd1.print( (4000 - customDelay) / 40 ) ;
return newCustom;
}
/////////////////////////////////////////////////////////////////////////
void motorRunClockwise() {
//NOT USED
customDelayMapped = speedControl();
digitalWrite(stepPin, LOW);
delayMicroseconds(customDelayMapped);
digitalWrite(stepPin, HIGH);
delayMicroseconds(customDelayMapped);
digitalWrite(dirPin, LOW);
digitalWrite(ms1, HIGH);
digitalWrite(ms2, HIGH);
digitalWrite(ms3, HIGH);
}
////////////////////////////////////////////////////////////////////////
void motorRunAntiClockwise() {
//NOT USED
customDelayMapped = speedControl();
digitalWrite(stepPin, LOW);
delayMicroseconds(customDelayMapped);
digitalWrite(stepPin, HIGH);
delayMicroseconds(customDelayMapped);
digitalWrite(dirPin, HIGH);
digitalWrite(ms1, HIGH);
digitalWrite(ms2, HIGH);
digitalWrite(ms3, HIGH);
}
