Lesson 19 Measuring the Temperature via DS18B20
Introduction
DS18B20 is a single-bus digital temperature sensor of high-precision. The measurement
range is－55℃ - ＋125℃ and inherent temperature resolution is 0.5℃. The sensor
support multi-point network and multi-point temperature measurement – the measured
result is sent to the controller via serial port in the format of a 9-12-bit number. This
digital sensor can be applied to various microcontrollers. It's simpler on Raspberry Pi.
Components
- 1 * Raspberry Pi
- 1 * GPIO Extension Board
- 1 * 40-Pin GPIO Cable
- 1 * Breadboard
- 1 * DS18B20 Module
- 1 * 3-Pin Wires
Experimental Principle
The Fritzing image:
The Physical picture:
Pin definition:
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