from machine import Pin, ADC
from utime import sleep
LDR_Pin = ADC(Pin(12, Pin.IN))
LED_Pin = Pin(4, Pin.OUT)

GAMMA = 0.7 
RL10 = 50;

while True:
   analogValue = LDR_Pin.read()
   #Convert the analog value into lux value:
   voltage = analogValue / 4095. * 5;
   print(voltage)
   resistance = 2000 * voltage / (1 - voltage / 5);
   print(resistance)
   lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

   print('lux:',lux)
   if lux < 1500:
     LED_Pin.on()
   else:
     LED_Pin.off()
   sleep(0.5)