Timed control of motor to rotate clockwise and counter clockwise

Projects General Guidance
1

Hi, I'm working on a project to control the motor to rotate clockwise and counter clockwise. However, it requires a manual input that allows control of the direction. I was wondering if it was possible to set it such that the motor would rotate clockwise for 5s and then stop, for 30s, before rotating counter clockwise for 5s and then stopping for 30s, before repeating this process indefinitely. Below is the current code that I am currently using. Please advise, thank you!

#include <LiquidCrystal.h>
//Keyboard Controls:
//
// C - Clockwise
// S - Stop
// A - Anti-clockwise

// Declare L298N Controller pins
// Motor 1
int dir1PinA = 2;
int dir2PinA = 5;
int speedPinA = 7; // PWM control
LiquidCrystal lcd(8, 9, 10, 11, 12, 13);

void setup() { 
 
Serial.begin(9600); // baud rate

lcd.begin(20, 4);
lcd.setCursor(5,0);
lcd.print("DC Motor");
lcd.setCursor(5,1);
lcd.print("Direction");
lcd.setCursor(5,2);
lcd.print("Control");
lcd.setCursor(2,3);
lcd.print("via Arduino UNO");
//Define L298N Dual H-Bridge Motor Controller Pins

pinMode(dir1PinA,OUTPUT);
pinMode(dir2PinA,OUTPUT);
pinMode(speedPinA,OUTPUT);

}

void loop() {

// Initialize the Serial interface:

if (Serial.available() > 0) {
int inByte = Serial.read();
int speed; // Local variable

switch (inByte) {

case 'C': // Clockwise rotation
analogWrite(speedPinA, 255);//Sets speed variable via PWM 
digitalWrite(dir1PinA, LOW);
digitalWrite(dir2PinA, HIGH);
Serial.println("Clockwise rotation"); // Prints out “Motor 1 Forward” on the serial monitor
Serial.println("   "); // Creates a blank line printed on the serial monitor
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Clockwise rotation");
break;

case 'S': // No rotation
analogWrite(speedPinA, 0); // 0 PWM (Speed)
digitalWrite(dir1PinA, LOW);
digitalWrite(dir2PinA, LOW);
Serial.println("No rotation");
Serial.println("   ");
//lcd.clear();
lcd.setCursor(5,1);
lcd.print("No rotation");
break;

case 'A': // Anti-clockwise rotation
analogWrite(speedPinA, 255); // Maximum PWM (speed)
digitalWrite(dir1PinA, HIGH);
digitalWrite(dir2PinA, LOW);
Serial.println("Anti-clockwise rotation");
Serial.println("   ");
//lcd.clear();
lcd.setCursor(3,2);
lcd.print("Anti-clockwise");
break;

default:
// Turn off the motor if any other key is being pressed
for (int thisPin = 2; thisPin < 11; thisPin++) {
digitalWrite(thisPin, LOW);
}
Serial.println("Wrong key is pressed");
//lcd.clear();
lcd.setCursor(0,3);
lcd.print("Wrong key is pressed");
  }
    }
      }
2

I'd suggest Task Macros for automating the movement, or an equivalent state machine.

3

The demo Several Things at a Time illustrates the use of millis() to manage timing.

The demo turns LEDs on and off but it would be straightforward to adapt it to make a motor work.

...R