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DS18B20 Digital temperature sensor + extras

SKU: ADA374

$7.50 AUD, inc GST
$6.82 AUD, exc GST
DS18B20 Digital temperature sensor + extras
7.5 AUD

SKU: ADA374

$7.50 AUD, inc GST
$6.82 AUD, exc GST
4 reviews 0 5 4.8
Shipping Offer

Shipping:

  • $6.95 Standard (2-4 days, tracked)
  • $9.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

These 1-wire digital temperature sensors are fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. They work great with any microcontroller using a single digital pin, and you can even connect multiple ones to the same pin, each one has a unique 64-bit ID burned in at the factory to differentiate them. Usable with 3.0-5.0V systems.

The only downside is they use the Dallas 1-Wire protocol, which is somewhat complex, and requires a bunch of code to parse out the communication. There's a great Arduino library for 1-Wire, but some microcontrollers do not have support for 1-Wire so be sure to check!

Adafruit toss in a 4.7k resistor, which is required as a pullup from the DATA to VCC line when using the sensor. Adafruit don't have a detailed tutorial up yet but you can get started by using the Dallas Temperature Control Arduino library which requires also the OneWire Library.

Technical Details

Technical specs:

  • Usable temperature range: -55 to 125°C (-67°F to +257°F)
  • 9 to 12 bit selectable resolution
  • Uses 1-Wire interface- requires only one digital pin for communication
  • Unique 64 bit ID burned into chip
  • Multiple sensors can share one pin
  • ±0.5°C Accuracy from -10°C to +85°C
  • Temperature-limit alarm system
  • Query time is less than 750ms
  • Usable with 3.0V to 5.5V power/data

Downloads:

DS18B20 Datasheet

This product is listed in:

Documentation and Resources:

Product Comments


Customer Reviews

  1. Review by phil verified purchaser
    Rating
    100

    Once supplying a steady stream of electrons to this device at a fixed electromotive pressure, one can communicate to it over 9600 baud and receive timely and accurate centigrade measurements that are truly amazing.

    Trivial to hook up to your R Pi or arduino.. and get working.. (Posted on 17/08/2018)

  2. Review by Phil verified purchaser
    Rating
    100

    Worked as promised installed into Fibaro Door Sensor. Delivery was prompt. My only gripe would be the size of the package it was sent in. Considering its so small was sent in a box that measured almost 200mm long 100mm wide and deep. Otherwise excellent service. (Posted on 27/06/2018)

  3. Review by Matthew verified purchaser
    Rating
    100

    Super easy to use with Raspbian (just enable the 1wire dtoverlay), and with ESP8622/micropython.

    Far more reliable in use than the DHT11/22 sensors, in my experience. (Posted on 27/04/2018)

  4. Review by Alex verified purchaser
    Rating
    80

    Easy to use, works great (Posted on 9/06/2016)

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $9.95 for Express Post (Overnight for most of Australia, 2+ days for rural, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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