import machine, onewire, ds18x20, time
ow = onewire.OneWire(machine.Pin(14), machine.Pin.PULL_UP))
ds = ds18x20.DS18X20(ow)
roms = ds.scan()

while roms:
  ds.convert_temp()
  time.sleep_ms(750)
  for rom in roms:
    print(ds.read_temp(rom))
    time.sleep(1)