This code performs the following tasks: 1. Import Required Libraries: The...

August 29, 2025 at 10:21 PM

import os
import wifi
import espcamera
import array
import time
import ifttt as ifttt
import board
import busio

print("Connecting to WiFi...")

try:
    from secrets import secrets
except ImportError:
    print("WiFi secrets are kept in secrets.py, please add them there!")
    raise

try:
    mywifi=wifi
    mywifi.radio.connect(
        ssid=os.getenv("CIRCUITPY_WIFI_SSID"),
        password=os.getenv("CIRCUITPY_WIFI_PASSWORD"),
    )
    print("Connected to WiFi!")
    print("My IP Address:", wifi.radio.ipv4_address)
except RuntimeError as e:
    print("Could not connect to WiFi:", e)

print("Setup complete.")

ifttt.send_message(mywifi, secrets, "Bowl_empty", debug=True, value="Bowl_empty")
    
camera = espcamera.Camera(
    i2c=i2c,
    data_pins=(board.CAM_D0, board.CAM_D1, board.CAM_D2, board.CAM_D3, board.CAM_D4, board.CAM_D5, board.CAM_D6, board.CAM_D7),
    pixel_clock_pin=board.CAM_PCLK,
    vsync_pin=board.CAM_VSYNC,
    external_clock_frequency=20000000
)
camera.framesize = espcamera.FrameSize.R240x240
camera.vflip = True
camera.hmirror = False
frame1 = camera.take(1)
time.sleep(1)
frame2 = camera.take(1)

Time_alarm = alarm.time.TimeAlarm(monotonic_time=time.monotonic() +60)

pixels_per_frame = len(frame1_data) // 3
diffrences = 0
for i in range(pixels_per_frame):
    r1, g1, b1, frame1_data[i3], frame1_data[i3+1], frame1_data[i*3+2]
    r2, g2, b2 = frame2_data[i3], frame2_data[i3+1], frame2_data[i*3+2]

    if (r1, g1, b1) != (r2, g2, b2):
        diffrences += 1

if diffrences > 0:
    print(f"Frames differ at {diffrences} pixels")
else:
    print("Frames are identical")

This code performs the following tasks:

Import Required Libraries: The necessary libraries like os, wifi, espcamera, ifttt, etc., are imported for network, camera, and sensor-related operations.
WiFi Connection:
- Attempts to connect to a WiFi network using SSID and password stored in environment variables (CIRCUITPY_WIFI_SSID and CIRCUITPY_WIFI_PASSWORD), or in a secrets module.
- If the connection succeeds, the IP address is printed; otherwise, it reports an error.
IFTTT Notification:
- The script uses the ifttt library to send a notification with the event name "Bowl_empty". This is likely triggered to alert something related to the state of a "bowl."
Camera Setup:
- Initializes an ESP-based camera (such as an ESP32-CAM) with specific I2C pins and configurations like pixel dimensions (240x240), vertical flip, and horizontal mirror settings.
- Captures two frames (images) using the camera. The images (frame1 and frame2) are stored for further processing.
Compare Captured Frames:
- Analyzes the two captured frames (frame1 and frame2) pixel by pixel.
- Calculates the number of pixels where the RGB values differ between the two frames.
- If there are any differences across pixels, it prints the count of differing pixels. Otherwise, it states the frames are identical.
Alarm Setup:
- Creates a TimeAlarm, which could trigger an event 60 seconds into the future (not used further in the code).

Issues and Mistakes in the Code:

Undeclared Variables:
- Variables like i2c, frame1_data, and frame2_data are not defined in the code, which will lead to runtime errors.
Incorrect Pixel Comparison Syntax:
- The pixel comparison logic (frame1_data[i3], frame1_data[i3+1]) contains syntax errors. The proper approach would be accessing pixel data in a structured manner (e.g., frame1[i * 3]).
Unused Alarm:
- The Time_alarm object isn't utilized further in the script.

Overall Functionality:

The overall purpose of the code appears to be:

Connecting to the internet.
Sending a notification to IFTTT.
Capturing two frames (images) using the camera.
Comparing the two frames pixel-by-pixel to detect any visual differences.
Printing whether or not the frames differ visually.

However, due to the mentioned issues, this code won't execute successfully without fixes.

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This code performs the following tasks: 1. **Import Required Libraries**: The...

Issues and Mistakes in the Code:

Overall Functionality:

This code performs the following tasks: 1. Import Required Libraries: The...