code.py

# Import necessary libraries
import time
import RPi.GPIO as GPIO
from mfrc522 import SimpleMFRC522

# Initialize the RFID reader
reader = SimpleMFRC522()

# Set up GPIO pins for solar panel and battery
GPIO.setmode(GPIO.BCM)
GPIO.setup(solar_panel_pin, GPIO.IN)
GPIO.setup(battery_pin, GPIO.OUT)

# Define a function to read student ID cards
def read_rfid():
    id, text = reader.read()
    return id

# Define a function to check if the bench is in use
def check_bench_status():
    # Code to check the status of the bench
    return bench_status

# Define a function to log student activity
def log_activity(student_id, activity):
    # Code to log student activity
    return

# Define the main program loop
while True:
    # Check if the bench is in use
    if check_bench_status():
        # Read the student's ID card
        student_id = read_rfid()
        
        # Log the student's activity
        log_activity(student_id, "logged in")
        
        # Code to grant the student access to learning materials or the internet
        
        # Wait for a certain amount of time
        time.sleep(10)
        
        # Log the student's activity
        log_activity(student_id, "logged out")
        
        # Code to revoke the student's access to learning materials or the internet
    else:
        # Put the bench in sleep mode to conserve power
        time.sleep(60)