Temperature sensor DS18B20 with ESP32 from TTGO

Introduction

This project is for testing purpose and provides a working example to measure the temperature by using a DS18B20 temperature sensor which works via the Dallas’ 1-Wire bus. Several sensors are able to use the same wire for communication. See the schematic below.

Usage

Just compile and upload the “.ino” file to the board, connect the sensors and very important the 4.7K Ohm resistor as stated below.

Schematic

Components

• DS18B20
• ESP32 development board
• Arduino
• Research on 1-Wire Bus Temperature Monitoring System