DS18B20 – RPI Pico

Table of Contents

Wiring
Read DS18B20 sensor (micropython)
Products
Source

Wiring #

DS18B20	Raspberry Pi Pico
GND	GND
Data (DQ)	Any digital GPIO (we’ll be using GPIO22); you also need to connect a 4.7KOhm resistor between the data line and VCC
VDD	3V3(OUT)

Read DS18B20 sensor (micropython) #

import machine, onewire, ds18x20, time

ds_pin = machine.Pin(22)
ds_sensor = ds18x20.DS18X20(onewire.OneWire(ds_pin))

roms = ds_sensor.scan()
print('Found DS devices: ', roms)

while True:
  ds_sensor.convert_temp()
  time.sleep_ms(750)
  for rom in roms:
    print(rom)
    tempC = ds_sensor.read_temp(rom)
    tempF = tempC * (9/5) +32
    print('temperature (ºC):', "{:.2f}".format(tempC))
    print('temperature (ºF):', "{:.2f}".format(tempF))
    print()
  time.sleep(1)

Thonny output