Waterproof DS18B20-Compatible Temperature Sensor with Resistor by The Pi Hut - The Pi Hut
Waterproof DS18B20-Compatible Temperature Sensor with Resistor by The Pi Hut - The Pi Hut
Waterproof DS18B20-Compatible Temperature Sensor with Resistor by The Pi Hut - The Pi Hut

Waterproof DS18B20-Compatible Temperature Sensor with Resistor

The Pi HutSKU: 102835
(36 Reviews)
£3.50
incl. VAT
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When you need to measure temperature, the DS18B20 is a firm favourite. Easy to code and with an abundance of examples on the internet, it's a go-to temperature sensor!

This particular sensor is a pre-wired, waterproof version with a DS18B20-compatible sensor in the tip - great for measuring the temperature of liquids, or simply something further away from your microcontroller. These are a digital sensor so you don't have to worry about signal issues over longer distances.

As the coating/exterior is made of PVC, we suggest limiting the submerged liquid temperature to 100°C to stay on the safe side. Don't use it in salt water or other corrosive liquids. Not IP rated or guaranteed for long-term/high-pressure usage.

These sensors are quite precise (±0.5°C usually and can give up to 12 bits of precision from the onboard digital-to-analogue converter.

They use the Dallas 1-Wire protocol, so data is transferred over a single IO pin,  and they're sable with 3-5V systems. Want something simpler than 1-wire? Maybe try the TMP36 instead.

A 4.7K resistor is included to use as a pull-up for fitting between the VCC and data pin

We toss in a 4.7k resistor, which is required as a pullup from the DATA to VCC line. For Arduino-compatible devices, you can get started using the Dallas Temperature Control Arduino library which also requires the OneWire Library.

Specifications

  • Stainless steel tube 6mm diameter by 30mm long
  • Cable length: 91cm, 4mm diameter
  • Contains DS18B20-compatible temperature sensor
  • Red connects to 3-5V, White/Blue/Black (varies by batch) connects to ground and Yellow/White (varies by batch) is data.

DS18B20 Specifications

  • Sensor temperature range: -55 to 125°C (stick to under 100°C due to the PVC coating!)
  • 9 to 12-bit selectable resolution
  • Uses 1-Wire interface- requires only one digital pin for communication
  • ±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

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    Waterproof DS18B20-Compatible Temperature Sensor with Resistor by The Pi Hut - The Pi Hut
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor by The Pi Hut - The Pi Hut
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor by The Pi Hut - The Pi Hut
    Overall product rating out of 5: 4.58
    Based on 36 reviews
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    Verified Customer
    William S
    City of London, GB
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor
    Initally unhappy as order did not have the resistor. After contacting support ressistor was sent and received next day. Very good response, but for that it would have been a 5 star excellent review.
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    2 months ago
    Verified Customer
    Jason c
    Dubuque, United States
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor
    Work really well. Seems to be accurate. Was able to get connected and functioning without any headache.
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    2 months ago
    Verified Customer
    Anonymous
    Reading, United Kingdom
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor
    Good quality, cheap sensor
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    4 months ago
    Verified Customer
    Christopher R
    Southampton, United Kingdom
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor
    Good little temperature probe, seems accurate enough for my needs. A bit more information would have been useful but this can be found online. Be aware 85C is used as a fault code, this might affect certain setups if you aren't aware that it could be a faulty probe or it could be a genuine reading.
    1 person found this review helpful.
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    6 months ago
    Verified Customer
    Robin G
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor
    I was browsing for a PT100 sensor module to use for controlling a cold chamber operating between 0 and 2 degrees C and saw this. Given the low cost I thought I'd give it a try as a possible alternative. It was straightforward to wire up and read using an Arduino nano and the recommended library. The nano was programmed using the Arduino IDE v. 1.8.13 running on an Ubuntu 22.04 machine. I tested the sensor in an equilibrated ice/water slurry which gave a reading of 0.0-0.1 degrees C using a calibrated reference thermometer. This sensor read between 0.2 and 0.4 C. That's pretty good for such a low cost device, so 5* from me at least in this temperature range.
    1 person found this review helpful.
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    11 months ago
    Verified Customer
    Keith M
    Birmingham, United Kingdom
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor
    gets readings!
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    1 year ago
    Verified Customer
    Peter F
    Edinburgh, United Kingdom
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor
    Used with Picomite basic, software interfaces easily with it. Just needed another for my hot tub simulator.
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    1 year ago
    Verified Customer
    Stephen K
    Waterproof DS18B20-Compatible Temperature Sensor with Resistor
    Well made with a good lead length and the required 4k7 ohm resistor needed for the Pi. The only issue is the lack of documentation with them and no information on the page as to what wires are, looking elsewhere on the PiHut page the wires are RED = Vcc, White = Ground and Yellow Dq = Data
    2 people found this review helpful.
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    1 year ago
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