**Motion Detection** rev_01

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    - Project: **Motion Detection**
    - Source Code NOT compiled for: Arduino Mega
    - Source Code created on: 2024-11-07 22:59:56

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* buzzer will buzz if the ultrasonic sensor detects */
    /* motion or obstacle, pir sensor will detect the */
    /* motion */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <ESP_AT_WiFiManager.h> //https://github.com/khoih-prog/ESP_AT_WiFiManager
#include <NewPing.h>             // Include NewPing library for ultrasonic sensor
#include <Wire.h>               // Include Wire library for I2C communication
#include <Adafruit_Sensor.h>    // Include Adafruit Sensor library
#include <Adafruit_MPU6050.h>   // Include Adafruit MPU6050 library for motion detection
#include <Servo.h>              // Include Servo library for controlling the buzzer

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

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
ESP_AT_WiFiManager wifiManager; // Instance of WiFi Manager
NewPing sonar(7, 8, 200);        // Set trigger pin to 7, echo pin to 8, max distance to 200 cm
Adafruit_MPU6050 mpu;            // Create an instance of the MPU6050
Servo buzzer;                    // Create a Servo object for the buzzer

void setup(void)
{
    Serial.begin(115200);        // Start serial communication at 115200 baud
    wifiManager.autoConnect();   // Connect to WiFi

    // Initialize the ultrasonic sensor
    sonar.ping();

    // Initialize the MPU6050
    if (!mpu.begin()) {
        Serial.println("Failed to find MPU6050 chip");
        while (1);
    }

    // Attach the buzzer to pin 9
    buzzer.attach(9);
    buzzer.write(0); // Start with the buzzer off
}

void loop(void)
{
    // Check for motion or obstacles
    float distance = sonar.ping_cm(); // Get distance from ultrasonic sensor
    if (distance > 0 && distance < 20) { // If an obstacle is detected within 20 cm
        buzzer.write(90); // Buzz the buzzer
    } else {
        buzzer.write(0); // Turn off the buzzer
    }

    // Check for motion using MPU6050
    sensors_event_t a, g, temp;
    mpu.getEvent(&a, &g, &temp);
    if (a.acceleration.x > 1 || a.acceleration.y > 1 || a.acceleration.z > 1) { // If motion is detected
        buzzer.write(90); // Buzz the buzzer
    } else {
        buzzer.write(0); // Turn off the buzzer
    }

    delay(100); // Small delay to avoid rapid toggling
}

/* END CODE */