Description: This sealed digital temperature probe lets you precisely measure temperatures in wet environments with a simple 1-Wire interface. The DS18B20 provides 9 to 12-bit (configurable) temperature readings over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor.
Dimensions: Probe is 7mm in diameter and roughly 26mm long. Overall length (including wire) is 6 feet.
Based on 14 ratings:
1 of 2 found this helpful:
Easy to connect got it working in less than 30 minutes.
These temperature sensors are very easy to hook up, and the measurements they give are accurate.
These work great and I like the 6' lengths. I’ve had problems reading 3 shorter ones I bought from Adafruit.
Most of the time, this sensor returns the correct temperature, but… (1) About 1 in every 30 readings, the sensor doesn’t respond to the 1-Wire device search. (2) About 1 in every 50 readings, the sensor returns 65535. (3) About 1 in every 100 readings, the sensor returns a reading 0-20C off from the actual temperature.
These are usually pretty solid little units. If it seems to be acting inconsistently, I’d recommend getting in touch with our tech support team. They should be able to help you out.
Easy to connect and very sturdy. Keep in mind you have to allow for the thermal characteristics of the plastic coating. Very flexible cable
Just took it out of the box. Sure would be nice if there was a little piece of paper that told which wire was which. I’m going to guess: Red = V+ Black = GND White = Data But why make me guess?
0 of 1 found this helpful:
This is a great encapsulation of the DS18B20. We would buy it in the thousands if we could get a data sheet for it for UL. I have been told there is no data sheet available so we will have to use another device.
I have tested them with my RaspberryPi and work great!
Makes it super easy to measure temperature.. 1 wire bus is sweet too..
I used to think that this was too expensive until I realized how long it makes me to make them myself and now think it is well worth the price.
Nearly perfect. Sturdy construction. Very easy to configure for use with the Raspberry Pi… maybe 5-10 min max. This sensor requires shielding in order to be used outdoors, but that’s not a big deal. My only disappointment is the cable length is short. It’d be great if it came in different sizes.