SparkFun SEN-00245 One Wire Digital Temperature Sensor – DS18B20
This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55C to 125C (+/-0.5C). Each sensor has a unique 64-Bit Serial number etched into it – allows for a huge number of sensors to be used on one data bus. This is a wonderful part that is the corner stone of many data-logging and temperature control projects.
Features:
- Unique 1-Wire interface requires only one port pin for communication
- Each device has a unique 64-bit serial code stored in an onboard ROM
- Multidrop capability simplifies distributed temperature sensing applications
- Requires no external components
- Can be powered from data line. Power supply range is 3.0V to 5.5V
- Measures temperatures from -55°C to +125°C (-67°F to +257°F)
- ±0.5°C accuracy from -10°C to +85°C
- Thermometer resolution is user-selectable from 9 to 12 bits
- Converts temperature to 12-bit digital word in 750ms (max.)
- User-definable nonvolatile (NV) alarm settings
- Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
- Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system
Documents:
Replaces:SEN-08366
Robert Pin –
Very simple to use and apparently reliable…also very cheap. A little small / fiddly. Doesn’t need an A2D converter..works straight away with a Pi.
Adam Coghl –
These are great little sensors. They are easy to connect up, read and manage. They work over a wide range of temperatures and they are accurate and easy to callibrate.
Agung –
How to use the sensor to the arduino ? and the code in arduino, please help 🙁