from machine import Pin, ADC
import time

# Define LDR (Analog Input)
ldr = ADC(Pin(35))  # Use GPIO 36 (ADC0) for LDR
ldr.atten(ADC.ATTN_11DB)  # Configure for full 3.3V range

# Define LED (Digital Output)
led = Pin(25, Pin.OUT)  # Use GPIO 25 for LED

# Threshold for light intensity (adjust based on your setup)
THRESHOLD = 2000  # Adjust this value as needed (0-4095 for 12-bit ADC)

while True:
    # Read the LDR value
    light_value = ldr.read()  # Value ranges from 0 to 4095
    print(f"Light Intensity: {light_value}")
    
    # Control the LED based on the threshold
    if light_value < THRESHOLD:
        led.value(1)  # Turn on LED (low light detected)
        print("LED ON")
    else:
        led.value(0)  # Turn off LED (sufficient light detected)
        print("LED OFF")
    
    time.sleep(0.5)  # Delay for readability