DS18B20 Temperature Sensor Module

Module utilizes the popular 1-Wire DS18B20 temperature measurement IC.

Description

The DS18B20 Digital Temperature Sensor Module utilizes the popular 1-Wire DS18B20 temperature measurement IC.

PACKAGE INCLUDES:

• DS18B20 Digital Temperature Sensor Module

KEY FEATURES OF DS18B20 DIGITAL TEMPERATURE SENSOR MODULE:

• -55°C to +85°C temperature measurement range with good accuracy
• 1-wire interface to save on MCU pins
• LED to indicate module communications
• 3.3 and 5V compatible

Communication with the DS18B20 is via the 1-Wire serial interface.  There is an LED on the module that flashes when the sensor is communicating with an MCU.

The communication protocol can look daunting when looking at the datasheet, but fortunately most poplar microcontrollers like Arduino have software libraries that make using these devices very straightforward and easy to do.

There are some options which can be programmed when using the device such as choosing between number of bits of resolution vs conversion time, but those can be ignored for establishing basic operation.

Hookup is straightforward.  Just supply power, ground and connect the 1-Wire bus pin to a digital pin on the microcontroller.  The part is compatible with 3.3 or 5V power.

Module Connections

There is a 3-pin header on the assembly.  There are a couple of different labeling schemes used on these modules as the baseboard is used for several different modules.

1 x 3 Header 

• ‘-‘ or ‘G’ = Ground
• Center Pin or ‘R‘ = Vcc (3.3 – 5V)
• ‘S’ or ‘Y’ = 1-wire bus.  Connects to digital pin on MCU

Technical Specifications