import machine
import time

# Define the ADC pin
adc = machine.ADC(0)

while True:
    # Read the voltage across the resistor
    voltage = adc.read_u16() / 65535 * 3.3

    # Calculate the resistance of the CdS sensor
    resistance = 10000 * (3.3 / voltage - 1)

    # Determine the ambient light levels based on the resistance value
    if resistance > 10000:
        print("Very dark", end="      \r")
    elif resistance > 5000:
        print("Dark", end="      \r")
    elif resistance > 2000:
        print("Dim", end="      \r")
    elif resistance > 1000:
        print("Normal", end="      \r")
    else:
        print("Bright", end="      \r")

    # Delay for a short period before reading the sensor again
    time.sleep(0.1)