from machine import Pin, ADC, PWM, I2C
from time import sleep
import dht
from pico_i2c_lcd import I2cLcd


ldr = ADC(26)                
led = Pin(15, Pin.OUT)      
pir = Pin(16, Pin.IN)        
servo = PWM(Pin(13))         
sensor = dht.DHT11(Pin(14))  


I2C_ADDR = 0x27
I2C_NUM_ROWS = 2
I2C_NUM_COLS = 16
i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)


servo.freq(50)

def set_servo_angle(angle):
    duty = int((angle / 18) + 2)
    servo.duty_u16(duty * 65536 /100)

lcd.putstr("Smart Home Ready!")
sleep(2)
lcd.clear()

while True:
    
    light_value = ldr.read_u16()
    light_level = light_value / 65535 * 100  
   
    try:
        sensor.measure()
        temp = sensor.temperature()
        hum = sensor.humidity()
    except:
        temp, hum = 0, 0
    
    
    motion = pir.value()
    
    
    if light_value < 30000 or motion == 1:
        led.value(1)
    else:
        led.value(0)
    
    
    if motion == 1:
        set_servo_angle(90)   
    else:
        set_servo_angle(0)    
    
 
    lcd.clear()
    lcd.putstr("T:{}C H:{}%\n".format(temp, hum))
    lcd.putstr("Light:{:.0f}%".format(light_level))
    
    print("Light:", light_level, "Temp:", temp, "Humidity:", hum, "Motion:", motion)
    
    sleep(1)