Added so much stuff I forgot again

Spring 2025/ENGR 490/10/5_rev_mini_project.py

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+from picamera2 import Picamera2, Preview
+from gpiozero import DistanceSensor
+import time
+import os
+
+user = os.getlogin()
+user_home = os.path.expanduser(f'~{user}')
+
+camera = Picamera2()
+camera.start()
+
+sensor = DistanceSensor(echo=24, trigger=23)
+
+try:
+    i = 1
+    while (1):
+        dis = sensor.distance * 100
+        print('Distance: {:.2f} cm'.format(dis))
+        if dis < 100:
+            camera.capture_file(f'{user_home}/Assignments/10/rev_capture%s.jpg' % i)
+            print('The number is %s' % i)
+            time.sleep(3)
+            i += 1
+        else:
+            print('waiting')
+            time.sleep(0.5)
+except KeyboardInterrupt:
+    camera.stop_preview
+    camera.stop
+    pass

Spring 2025/ENGR 490/11/3_smile_eye_detection.py

@@ -0,0 +1,55 @@
+from picamera2 import Picamera2
+import cv2
+import os
+
+
+camera = Picamera2()
+
+preview_config = camera.create_preview_configuration(main={'size': (640, 480)})
+
+camera.configure(preview_config)
+camera.start()
+
+if not os.path.exists("haarcascade_frontalface_default.xml"):
+    import urllib.request
+    url = "https://raw.githubusercontent.com/opencv/opencv/master/data/haarcascades/haarcascade_frontalface_default.xml"
+    urllib.request.urlretrieve(url, "haarcascade_frontalface_default.xml")
+
+if not os.path.exists("haarcascade_eye.xml"):
+    import urllib.request
+    url = "https://raw.githubusercontent.com/opencv/opencv/master/data/haarcascades/haarcascade_eye.xml"
+    urllib.request.urlretrieve(url, "haarcascade_eye.xml")
+
+if not os.path.exists("haarcascade_smile.xml"):
+    import urllib.request
+    url = "https://raw.githubusercontent.com/opencv/opencv/master/data/haarcascades/haarcascade_smile.xml"
+    urllib.request.urlretrieve(url, "haarcascade_smile.xml")
+
+
+face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
+eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml')
+smile_cascade = cv2.CascadeClassifier('haarcascade_smile.xml')
+
+
+while(1):
+    frame = camera.capture_array()
+    frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
+    gray = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY)
+    faces = face_cascade.detectMultiScale(gray, 1.3, 5)
+    eyes = eye_cascade.detectMultiScale(gray, 1.3, 5)
+    smiles = smile_cascade.detectMultiScale(gray, 1.8, 20)
+
+    for (x, y, w, h) in faces:
+        cv2.rectangle(frame, (x, y), (x+w, y+h), (255, 0, 0), 2)
+
+    for (x, y, w, h) in eyes:
+        cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 255, 0), 2)
+
+    for (x, y, w, h) in smiles:
+        cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 0, 255), 2)
+
+    cv2.imshow("Real-Time Face Detection", frame)
+    if cv2.waitKey(1) & 0xFF == ord('q'):
+        break
+    
+cv2.destroyAllWindows()

Spring 2025/ENGR 490/11/4_mobile_net_ssd.py

@@ -0,0 +1,54 @@
+from picamera2 import Picamera2
+import cv2
+import numpy as np
+import os
+import urllib.request
+
+if not os.path.exists("MobileNetSSD_deploy.prototxt"):
+    urllib.request.urlretrieve(
+        "https://raw.githubusercontent.com/chuanqi305/MobileNet-SSD/master/deploy.prototxt",
+        "MobileNetSSD_deploy.prototxt"  
+    )
+
+if not os.path.exists("MobileNetSSD_deploy.caffemodel"):
+    urllib.request.urlretrieve(
+        "https://github.com/chuanqi305/MobileNet-SSD/raw/master/mobilenet_iter_73000.caffemodel",
+        "MobileNetSSD_deploy.caffemodel"  
+    )
+
+net = cv2.dnn.readNetFromCaffe('MobileNetSSD_deploy.prototxt', 'MobileNetSSD_deploy.caffemodel')
+
+CLASSES = ["background", "aeroplane", "bicycle", "bird", "boat", "bottle",
+           "bus", "car", "cat", "chair", "cow", "diningtable", "dog", "horse",
+           "motorbike", "person", "pottedplant", "sheep", "sofa", "train", "tvmonitor"]
+
+camera = Picamera2()
+camera.configure(camera.create_preview_configuration(main={'size': (640, 480)}))
+camera.start()
+
+while (1):
+    frame = camera.capture_array()
+
+    frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
+
+    (h, w) = frame.shape[:2]
+
+    blob = cv2.dnn.blobFromImage(cv2.resize(frame, (300,300)), 0.007843, (300, 300), 127.5)
+    net.setInput(blob)
+    detections = net.forward()
+
+    for i in range(detections.shape[2]):
+        confidence = detections[0, 0, 1, 2]
+        if confidence > 0.5:
+            idx = int(detections[0, 0, 1, 1])
+            box = detections[0, 0, 1, 3:7] * np.array([w, h, w, h])
+            (startX, startY, endX, endY) = box.astype("int")
+            label = f"{CLASSES[idx]}: {confidence*100:.2f}%"
+
+            cv2.rectangle(frame, (startX, startY), (endX, endY), (0,255,0), 2)
+            cv2.putText(frame, label, (startX, startY - 10), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0,255,0), 2)
+    cv2.imshow("Object Detection", frame)
+    if cv2.waitKey(1) & 0xFF == ord('q'):
+        break
+
+cv2.destoryAllWindows()

Spring 2025/ENGR 490/11/5_mini_project.py

@@ -0,0 +1,55 @@
+from picamera2 import Picamera2
+from gpiozero import LED
+import cv2
+import os
+
+
+camera = Picamera2()
+
+led = LED(17)
+off = True
+on_time = 100
+time_left = 0
+
+preview_config = camera.create_preview_configuration(main={'size': (640, 480)})
+
+camera.configure(preview_config)
+camera.start()
+
+if not os.path.exists("haarcascade_frontalface_default.xml"):
+    import urllib.request
+    url = "https://raw.githubusercontent.com/opencv/opencv/master/data/haarcascades/haarcascade_frontalface_default.xml"
+    urllib.request.urlretrieve(url, "haarcascade_frontalface_default.xml")
+
+
+face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
+
+while(1):
+    frame = camera.capture_array()
+    frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
+    gray = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY)
+    faces = face_cascade.detectMultiScale(gray, 1.3, 5)
+    for (x, y, w, h) in faces:
+        cv2.rectangle(frame, (x, y), (x+w, y+h), (255, 0, 0), 2)
+
+    try:
+        if faces[0][0] > 0 :
+            off = False
+            time_left = on_time
+    except:
+        off = True
+        
+    if not off or time_left > 0:
+        led.on()
+        time_left = time_left - 1
+    else:
+        led.off()
+        time_left = 0
+
+    print(time_left)
+
+    cv2.imshow("Real-Time Face Detection", frame)
+    if cv2.waitKey(1) & 0xFF == ord('q'):
+        break
+    
+cv2.destroyAllWindows()

Spring 2025/ENGR 490/12/1_client.py

@@ -0,0 +1,27 @@
+import socket
+import time
+import math as np
+
+SERVER_IP = "pistudent7" 
+SERVER_PORT = 8080
+
+
+def send_distance():
+  x = 0
+  while True:
+        try:
+            distance_cm = abs(np.sin(x)) * 100 
+            message = f"DISTANCE:{distance_cm:.2f}cm"
+            with socket.socket() as sock:
+                sock.connect((SERVER_IP, SERVER_PORT))
+                sock.sendall(message.encode())
+                print(f"Sent: {message}")
+
+            time.sleep(1)  
+            x = x + .1
+        except Exception as e:
+            print(f"Error: {e}")
+            time.sleep(5) 
+
+if __name__ == "__main__":
+    send_distance()

Spring 2025/ENGR 490/12/1_server.py

@@ -0,0 +1,25 @@
+import socket
+
+server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+
+server_socket.bind(('0.0.0.0', 8080))
+
+server_socket.listen(1)
+
+print("Server ready, Waiting for data...")
+
+while True:
+    conn, addr = server_socket.accept()
+
+    print(f"Connected to {addr}")
+    try:
+        while True:
+            data = conn.recv(1024)
+            if not data:
+                break
+            print(f"Recieved: {data.decode()}")
+    except Exception as e:
+        print(f"Error: {e}")
+    finally:
+        conn.close()
+        print(f"Connection to {addr} closed.")

Spring 2025/ENGR 490/12/2_email.py

@@ -0,0 +1,11 @@
+import smtplib
+from email.mime.text import MIMEText
+
+msg = MIMEText("Hello from your Rasberry Pi!")
+msg['Subject'] = 'RPi Alert'
+msg['From'] = 'ghaldrup00@gmail.com'    
+msg['To'] = 'garrett@haldrup.tech'
+
+with smtplib.SMTP_SSL('smtp.gmail.com', 465) as server:
+    server.login('ghaldrup00@gmail.com', 'xxxxxxxxxxxxxxxxxxx')
+    server.send_message(msg)

Spring 2025/ENGR 490/12/3_ultra_email.py

@@ -0,0 +1,22 @@
+from gpiozero import DistanceSensor
+import smtplib
+from email.mime.text import MIMEText
+import time
+
+
+ultra = DistanceSensor(echo=24, trigger=23)
+while (1):
+    time.sleep(1)
+    print(round(ultra.distance * 100, 2))
+    if (ultra.distance * 100) > 50:
+        print("Sending email")
+        msg = MIMEText(f"Distance is over 50cm it is {round(ultra.distance * 100, 2)}cm!")
+        msg['Subject'] = 'Distance Alert'
+        msg['From'] = 'ghaldrup00@gmail.com'    
+        msg['To'] = 'garrett@haldrup.tech'
+        with smtplib.SMTP_SSL('smtp.gmail.com', 465) as server:
+            server.login('ghaldrup00@gmail.com', 'irfm gopy mcsi suge')
+            server.send_message(msg)
+
+
+

Spring 2025/ENGR 490/4/P4/Scripts/conditionals.py

@@ -0,0 +1,12 @@
+# Get user input
+
+number = int(input("Enter a number: "))
+
+# Check if the number is positive, negative, or zero
+
+if number > 0:
+    print(f"{number} is positive.")
+elif number < 0:
+    print(f"{number} is negative.")
+else:
+    print("The number is zero.")

Spring 2025/ENGR 490/4/P4/Scripts/loops_demo.py

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+# Print numbers from 1 to 10 using a for loop
+
+print("For Loop:")
+
+for i in range(1,11):
+    print(i)
+
+# Print numbers from 1 to 5 using a while loop
+
+print("While Loop:")
+
+count = 1
+
+while count <= 5:
+    print(count)
+    count += 1

Spring 2025/ENGR 490/4/P4/Scripts/math_operations.py

@@ -0,0 +1,12 @@
+# Get two numbers from the user
+
+num1 = float(input("Enter the first number: "))
+num2 = float(input("Enter the second number: "))
+
+# Perform basic operations
+
+print(f"Addition: {num1 + num2}")
+print(f"Subtraction: {num1 - num2}")
+print(f"Multiplication: {num1 * num2}")
+print(f"Division: {num1 / num2}")
+

Spring 2025/ENGR 490/4/P4/Scripts/simple_calculator.py

@@ -0,0 +1,17 @@
+num1 = float(input("Enter the first number: "))
+num2 = float(input("Enter the second number: "))
+
+operation = input("CHoose an operation (+, -, *, /): ")
+
+if operation == "+":
+    result = num1 + num2
+elif operation == "-":
+    result = num1 - num2
+elif operation == "*":
+    result = num1 * num2
+elif operation == "/":
+    result = num1 / num2
+else:
+    result = "Invalid operation"
+
+print(f"Result: {num1} {operation} {num2} = {result}")

Spring 2025/ENGR 490/4/P4/Scripts/simple_function.py

@@ -0,0 +1,6 @@
+def greet_user(name):
+    print(f"Hello, {name}! Welcome to the Python function activity.")
+
+greet_user("Alice")
+greet_user("Bob")
+

Spring 2025/ENGR 490/5/A5/A5/button_led.py

@@ -0,0 +1,12 @@
+from gpiozero import LED, Button
+from time import sleep
+
+led = LED(18)
+button = Button(17)
+
+try:
+    while(1):
+        button.when_pressed = led.on
+        button.when_released = led.off
+except KeyboardInterrupt:
+    print("Exiting..")

Spring 2025/ENGR 490/5/P5/P5/led_blink_RPi.py

@@ -0,0 +1,15 @@
+from gpiozero import LED
+import time as time
+
+led = LED(17)
+
+try:
+    while(1):
+        led.on()
+        time.sleep(0.5)
+        led.off()
+        time.sleep(0.5)
+except KeyboardInterrupt:
+    print("Exiting...")
+finally:
+    pass