from machine import Pin
import onewire
import ds18x20
import time

# DS18B20 data line on Pico GPIO0 (physical pin 1)
dat = Pin(0)

ow = onewire.OneWire(dat)
ds = ds18x20.DS18X20(ow)

roms = ds.scan()

if not roms:
    print("No DS18B20 sensor found")

while True:

    ds.convert_temp()
    time.sleep_ms(750)

    for rom in roms:
        temp = ds.read_temp(rom)

        # overwrite same line
        print("\rTemperature: {:.2f} °C".format(temp), end="")

    time.sleep(.1)