Waffle Detection System - The PERFECT time to leave a Stroopwafel

1#include <Wire.h>  
2#include <LiquidCrystal_I2C.h>  
3// Constants for the LCD  
4LiquidCrystal_I2C lcd(0x27, 16, 2); // set the LCD address to 0x27 for a 16 chars and 2 line display  
5const int tempPin = A3; // analog pin for the temperature sensor  
6// Constants for the buzzer  
7const int buzzerPin = A1;  
8// Define note frequencies (in Hz)  
9#define NOTE_B0 31  
10#define NOTE_C1 33  
11#define NOTE_CS1 35  
12#define NOTE_D1 37  
13#define NOTE_DS1 39  
14#define NOTE_E1 41  
15#define NOTE_F1 44  
16#define NOTE_FS1 46  
17#define NOTE_G1 49  
18#define NOTE_GS1 52  
19#define NOTE_A1 55  
20#define NOTE_AS1 58  
21#define NOTE_B1 62  
22#define NOTE_C2 65  
23#define NOTE_CS2 69  
24#define NOTE_D2 73  
25#define NOTE_DS2 78  
26#define NOTE_E2 82  
27#define NOTE_F2 87  
28#define NOTE_FS2 93  
29#define NOTE_G2 98  
30#define NOTE_GS2 104  
31#define NOTE_A2 110  
32#define NOTE_AS2 117  
33#define NOTE_B2 123  
34#define NOTE_C3 131  
35#define NOTE_CS3 139  
36#define NOTE_D3 147  
37#define NOTE_DS3 156  
38#define NOTE_E3 165  
39#define NOTE_F3 175  
40#define NOTE_FS3 185  
41#define NOTE_G3 196  
42#define NOTE_GS3 208  
43#define NOTE_A3 220  
44#define NOTE_AS3 233  
45#define NOTE_B3 247  
46#define NOTE_C4 262  
47#define NOTE_CS4 277  
48#define NOTE_D4 294  
49#define NOTE_DS4 311  
50#define NOTE_E4 330  
51#define NOTE_F4 349  
52#define NOTE_FS4 370  
53#define NOTE_G4 392  
54#define NOTE_GS4 415  
55#define NOTE_A4 440  
56#define NOTE_AS4 466  
57#define NOTE_B4 494  
58#define NOTE_C5 523  
59#define NOTE_CS5 554  
60#define NOTE_D5 587  
61#define NOTE_DS5 622  
62#define NOTE_E5 659  
63#define NOTE_F5 698  
64#define NOTE_FS5 740  
65#define NOTE_G5 784  
66#define NOTE_GS5 831  
67#define NOTE_A5 880  
68#define NOTE_AS5 932  
69#define NOTE_B5 988  
70#define NOTE_C6 1047  
71#define NOTE_CS6 1109  
72#define NOTE_D6 1175  
73#define NOTE_DS6 1245  
74#define NOTE_E6 1319  
75#define NOTE_F6 1397  
76#define NOTE_FS6 1480  
77#define NOTE_G6 1568  
78#define NOTE_GS6 1661  
79#define NOTE_A6 1760  
80#define NOTE_AS6 1865  
81#define NOTE_B6 1976  
82#define NOTE_C7 2093  
83#define NOTE_CS7 2217  
84#define NOTE_D7 2349  
85#define NOTE_DS7 2489  
86#define NOTE_E7 2637  
87#define NOTE_F7 2794  
88#define NOTE_FS7 2960  
89#define NOTE_G7 3136  
90#define NOTE_GS7 3322  
91#define NOTE_A7 3520  
92#define NOTE_AS7 3729  
93#define NOTE_B7 3951  
94#define NOTE_C8 4186  
95#define NOTE_CS8 4435  
96#define NOTE_D8 4699  
97#define NOTE_DS8 4978  
98// Notes of the Tetris theme (Korobeiniki)  
99int melody[] = {  
100	 NOTE_E5, NOTE_B4, NOTE_C5, NOTE_D5, NOTE_C5, NOTE_B4, NOTE_A4, NOTE_A4,  
101	 NOTE_C5, NOTE_E5, NOTE_D5, NOTE_C5, NOTE_B4, NOTE_C5, NOTE_D5, NOTE_E5,  
102	 NOTE_C5, NOTE_A4, NOTE_A4, NOTE_D5, NOTE_F5, NOTE_A5, NOTE_G5, NOTE_F5,  
103	 NOTE_E5, NOTE_C5, NOTE_E5, NOTE_D5, NOTE_C5, NOTE_B4, NOTE_B4, NOTE_C5,  
104	 NOTE_D5, NOTE_E5, NOTE_C5, NOTE_A4, NOTE_A4  
105};  
106// Note durations: 4 = quarter note, 8 = eighth note, etc.  
107int noteDurations[] = {  
108	 4, 8, 8, 4, 8, 8, 4, 4,  
109	 4, 4, 4, 8, 8, 4, 8, 8,  
110	 4, 4, 4, 4, 4, 2, 4, 8,  
111	 8, 4, 8, 8, 4, 4, 4, 8,  
112	 8, 4, 8, 8, 4, 4  
113};  
114void playTetrisTheme() {  
115	 for (int thisNote = 0; thisNote < sizeof(melody) / sizeof(melody[0]); thisNote++) {  
116	   int noteDuration = 1000 / noteDurations[thisNote];  
117	   tone(buzzerPin, melody[thisNote], noteDuration);  
118	   delay(noteDuration * 1.50); // Adding a longer pause for slower tempo  
119	   noTone(buzzerPin);  
120	 }  
121}  
122void setup() {  
123	 lcd.init();         // initialize the lcd  
124	 lcd.backlight();    // Turn on the LCD screen backlight  
125	 lcd.setCursor(0, 0);  
126	 lcd.print("Temp: ");  
127	 pinMode(buzzerPin, OUTPUT);  
128	 delay(2000); // Wait for the sensor to stabilize  
129	 // Initialize the initial temperature  
130	 initialTemperature = readTemperature();  
131	 // Initialize serial communication at 9600 baud  
132	 Serial.begin(9600);  
133}  
134float readTemperature() {  
135	 int tempReading = analogRead(tempPin);  
136	 float voltage = tempReading * (5.0 / 1023.0);  
137	 return voltage * 100.0; // LM35 outputs 10mV per degree Celsius  
138}  
139float initialTemperature = 0.0;  
140int messageCount = 0;  
141void loop() {  
142	 static bool musicPlayed = false;  
143	  
144	 float currentTemperature = readTemperature();  
145	 // Display the temperature on the LCD  
146	 lcd.setCursor(6, 0);  
147	 lcd.print(currentTemperature);  
148	 lcd.print(" C   "); // Add some spaces to ensure old values are cleared  
149	 // Check for 20% reduction  
150	 if (!musicPlayed && currentTemperature <= initialTemperature * 0.8) {  
151	   playTetrisTheme(); // Play the Tetris theme  
152	   musicPlayed = true; // Ensure the music is played only once  
153	 }  
154	 // Check for serial messages  
155	 if (Serial.available() > 0) {  
156	   Serial.read(); // Read the incoming byte (message)  
157	   messageCount++; // Increment the message count  
158	 }  
159	 // Check if message count exceeds 20  
160	 if (messageCount > 20) {  
161	   playTetrisTheme(); // Play the Tetris theme  
162	   messageCount = 0; // Reset the message count to prevent retriggering  
163	 }  
164	 delay(1000); // Update the temperature reading every second  
165}

1import cv2
2import serial
3import time
4
5# Set up serial communication with the Arduino
6# Replace '/dev/tty.usbmodem1431201' with the appropriate port name for your system
7arduino = serial.Serial(port='/dev/tty.usbmodem1431201', baudrate=9600, timeout=1)
8
9# Allow some time for the Arduino to initialize
10time.sleep(2)
11
12# Start video capture from the default webcam (0 is the default webcam index)
13cap = cv2.VideoCapture(0)
14
15# Check if the camera opened successfully
16if not cap.isOpened():
17    print("Error: Could not open camera.")
18    exit()
19
20# Read the first frame
21ret, prev_frame = cap.read()
22if not ret:
23    print("Error: Could not read frame from camera.")
24    cap.release()
25    cv2.destroyAllWindows()
26    exit()
27
28# Convert the first frame to grayscale
29prev_frame_gray = cv2.cvtColor(prev_frame, cv2.COLOR_BGR2GRAY)
30prev_frame_gray = cv2.GaussianBlur(prev_frame_gray, (21, 21), 0)
31
32while True:
33    # Capture frame-by-frame
34    ret, frame = cap.read()
35    if not ret:
36        print("Error: Could not read frame.")
37        break
38
39    # Convert current frame to grayscale
40    frame_gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
41    frame_gray = cv2.GaussianBlur(frame_gray, (21, 21), 0)
42
43    # Compute the absolute difference between the current frame and the previous frame
44    frame_diff = cv2.absdiff(prev_frame_gray, frame_gray)
45
46    # Threshold the difference to get the binary image
47    _, thresh = cv2.threshold(frame_diff, 25, 255, cv2.THRESH_BINARY)
48    thresh = cv2.dilate(thresh, None, iterations=2)
49
50    # Find contours in the binary image
51    contours, _ = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
52
53    # If contours are found, movement is detected
54    if len(contours) > 0:
55        print("Movement detected!")
56        arduino.write(b'1')  # Send a signal to the Arduino
57    else:
58        print("No movement")
59
60    # Display the original frame and the threshold frame (optional)
61    cv2.imshow('Frame', frame)
62    cv2.imshow('Threshold', thresh)
63
64    # Update the previous frame
65    prev_frame_gray = frame_gray.copy()
66
67    # Press 'q' to quit
68    if cv2.waitKey(1) == ord('q'):
69        break
70
71# Release capture and close all windows
72cap.release()
73cv2.destroyAllWindows()
74
75# Close the serial connection
76arduino.close()