**Veggie Cutter** rev_01

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    - Project: **Veggie Cutter**
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2024-12-04 19:09:42

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* the motor is 775DC on off switch and 12 volt jack */
    /* is attached ,the blade mechanism is driven by */
    /* motor,it is battery operated,it uses a switch */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <EasyButton.h> // https://github.com/evert-arias/EasyButton
#include <Servo.h> // Added for Servo control

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t pushbutton_PushButton_PIN_D2      = 2;
#define TRIG_PIN 7
#define ECHO_PIN 8
#define START_BUTTON 2 // This conflicts with pushbutton_PushButton_PIN_D2
#define STOP_BUTTON 3
#define CONVEYOR_PIN 5
#define BLADE_SERVO_PIN 9

// Constants
const int CUT_DELAY = 500; // Delay between cuts in milliseconds
const int DISTANCE_THRESHOLD = 10; // Distance to detect vegetable (in cm)

// Objects
Servo bladeServo;

// Variables
bool machineOn = false;

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(pushbutton_PushButton_PIN_D2, INPUT_PULLUP);

    // Serial Monitor for Debugging
    Serial.begin(9600);

    // Pin Modes
    pinMode(TRIG_PIN, OUTPUT);
    pinMode(ECHO_PIN, INPUT);
    pinMode(START_BUTTON, INPUT_PULLUP);
    pinMode(STOP_BUTTON, INPUT_PULLUP);
    pinMode(CONVEYOR_PIN, OUTPUT);

    // Servo Initialization
    bladeServo.attach(BLADE_SERVO_PIN);
    bladeServo.write(0); // Blade in rest position

    // Initial States
    digitalWrite(CONVEYOR_PIN, LOW);
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    // Check for Start/Stop Buttons
    if (digitalRead(START_BUTTON) == LOW) {
        machineOn = true;
        Serial.println("Machine Started");
    }
    if (digitalRead(STOP_BUTTON) == LOW) {
        machineOn = false;
        Serial.println("Machine Stopped");
    }

    if (machineOn) {
        digitalWrite(CONVEYOR_PIN, HIGH); // Start Conveyor
        int distance = getDistance();

        if (distance <= DISTANCE_THRESHOLD) {
            Serial.println("Vegetable Detected");
            digitalWrite(CONVEYOR_PIN, LOW); // Stop Conveyor
            cutVegetable(); // Perform Cutting
            delay(1000); // Wait before restarting conveyor
            digitalWrite(CONVEYOR_PIN, HIGH); // Restart Conveyor
        }
    } else {
        digitalWrite(CONVEYOR_PIN, LOW); // Stop Conveyor
    }
}

// Function to Measure Distance
int getDistance() {
    // Send Trigger Pulse
    digitalWrite(TRIG_PIN, LOW);
    delayMicroseconds(2);
    digitalWrite(TRIG_PIN, HIGH);
    delayMicroseconds(10);
    digitalWrite(TRIG_PIN, LOW);

    // Measure Echo Pulse Duration
    long duration = pulseIn(ECHO_PIN, HIGH);

    // Calculate Distance in cm
    int distance = duration * 0.034 / 2;
    return distance;
}

// Function to Control Blade Servo for Cutting
void cutVegetable() {
    Serial.println("Cutting...");
    bladeServo.write(90); // Move blade down
    delay(CUT_DELAY); // Cutting time
    bladeServo.write(0); // Move blade back to rest
    delay(CUT_DELAY);
}

/* END CODE */