DS18B20 Digital Temprature Sensor 1-Wire
-
DESCRIPTION
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!
We toss in a 4.7k resistor, which is required as a pullup from the DATA to VCC line when using the sensor. We 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:
- sale
- Arduino
- GPS
- GSM/GPRS
- LCDs
- Single Board Computerv
- Tools
- Development Boards
- Breakout Boards
- Power and Batteries
- Unmanned Aerial System
- Programmers
- Printer
- Tablet
- Intelligent Building
- Electric Vehicle
- Drivers
- Wireless and Communications
- Robotics
- Tracking
- solar Cell
-
Sensors
- IMU/AHRS
- PIR
- Ultrasonics
- Biometrics
- Touch
- liquid level sensor
- Radiations
- Current/Voltage
- Proximity Sensor
- Temperature
- Humidity
- Inclinometer
- Gyro
- Accelerometers
- Flame
- Sound
- Pressure
- Flow Meter
- GAS
- Laser
- Infrared
- Mocrowave
- Magnet & Compass
- Light / image / Color
- Vibration/Force/Torque/Flex
- anemometer
- ID
- Sound
- Components
- Cables
- Interface Converter
- LED and Lighting