from machine import Pin
from machine import UART

bt = UART(2, baudrate=9600, tx=25, rx=23)
led = Pin(2, Pin.OUT)

while True:
    if bt.any() != 0:
        msg = bt.read(bt.any()).decode().strip('rn')
        print(msg)
        if "ON" in msg:
            led.value(1)
        if "OFF" in msg:
            led.value(0)