from machine import Pin
import time, ds18x20
import onewire
ow = onewire.OneWire(Pin(4)) # create a OneWire bus on GPIO12
 
ds = ds18x20.DS18X20(ow)
 
roms = ds.scan()
ds.convert_temp()
time.sleep_ms(750)
 
for rom in roms:
    print(ds.read_temp(rom))