DS18b20 temperature probe sensor

DS18b20 temperature probe

Introduction

In this tutorial, we will use pre-wired and waterproof version of the DS18B20 digital temperature sensor. This sensor is handy when you want to measure temperature of the place which is far away, or in wet condition. Because the sensor is digital, we don’t get signal degradation over a long distance. This 1-wire digital temperature sensor is fairly precise (i.e + or – 0.5-degree Celsius).

Pin description DS18b20 temperature probe

The DS18B20 waterproof digital temperature sensor has 3 pins (2-power supply pin 1-data pin)

• VCC – Red
• GND – Black
• DATA – Yellow or White

Circuit diagram

• Connect “GND” of DS18B20 sensor to “GND” of evive board
• We will also use 4.7 k ohm resistor as a pull-up resistor between “VCC” and “DATA”  pin as shown below in the circuit diagram
• Connect one end of the resistor to “VCC” and another end to “DATA” wires of the temperature sensor
• Connect “VCC” of the temperature sensor to “VCC” of  evive board
• Connect “DATA” pin of the temperature sensor to pin number 2 of evive board

Features: DS18B20 temperature sensor chip, waterproof, stainless steel probe, cable length: 100cm; Power supply: 3.0~5V; 9~12 digit adjustable resolution; Temperature range: -55’C~125’C

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