Coding for continuous servo motor and 2 push switch buttons

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1

Hello everyone,

I am currently doing a mini-project on top of a research assignment. I am using an ELEGOO "The most complete starter kit mega 2560 project."

I am not too familiar with Arduino coding and have only used an Arduino UNO once in the past. I downloaded the Arduino IDE software on my laptop. I am using a continuous servo motor and two push switch buttons. In the code I want the servo motor to always be on HIGH (on) until one of the push switch buttons is pressed. Once one of the switches is pressed I want it to delay for 15 seconds then rotate the other way and vice versa. Also, I want this looped so it just keeps running until I turn it off. Once I get this done maybe I might implement a third switch that turns off the code altogether. I feel like this should be simple but I could be wrong. I have a code written as well but am unsure if it is anywhere close to what it is supposed to do.

2

Here is the code I currently have. Please feel free to comment and suggest proper coding.

#include <Servo.h>

// Define servo and button pins
const int servoPin = 9;
const int button1Pin = 2;
const int button2Pin = 3;

Servo myServo;

void setup() {
  // Attach servo to its pin
  myServo.attach(servoPin);

  // Set button pins as inputs with internal pull-up resistors
  pinMode(button1Pin, INPUT_PULLUP);
  pinMode(button2Pin, INPUT_PULLUP);
}

void loop() {
  // Read the state of the buttons
  int button1State = digitalRead(button1Pin);
  int button2State = digitalRead(button2Pin);

  // Check if button 1 is pressed
  if (button1State == LOW) {
    rotateServoClockwise();
    delay(15000);  // 15-second delay
    rotateServoCounterClockwise();
  }

  // Check if button 2 is pressed
  if (button2State == LOW) {
    // Stop the servo when button 2 is pressed
    myServo.write(90);  // Center position
    delay(100);  // Small delay for stability
  }
}

void rotateServoClockwise() {
  // Rotate the servo clockwise
  myServo.write(180);
}

void rotateServoCounterClockwise() {
  // Rotate the servo counter-clockwise
  myServo.write(0);
}
3

Hello joaquinwillis95

Welcome to the world's best Arduino forum ever.

You can easily realise your school assignment with the IPO model.

Take a look at this simple abstraction of your task:

INPUT: Read and debounce the keys.
PROCESSING: When the button has been pressed, set value for angle.
OUTPUT: Write the value to the servo.

Have a nice day and enjoy coding in C++.

4

Why a 15 seconds delay after CW but zero delay after CCW?

5

Hi this isn't really a school assignment. This is a mini project that I am doing on top of a research that I am doing that is chemistry-based. I want to make a functioning model.

6

I want it to rotate CW until switch one is pressed then 15 second delay, rotate CCW until switch two is pressed. I dont really know what I am doing. I tried my best writing this code. I am unsure if it is correct.

7

Waiting for a switch press while rotating a motor needs an interrupt or non-blocking motor movement. I think "Servo.h" creates blocking code during servo movement.

8

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