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esp32-ds18b20-ledc
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esp32-ds18b20-ledc/README.md

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esp32-ds18b20-ledc

Introduction

This is an example application for the Maxim Integrated DS18B20 Programmable Resolution 1-Wire Digital Thermometer device and LEDs.

Ensure that submodules are cloned:

$ git clone --recursive https://github.com/nmasse-itix/esp32-ds18b20-ledc.git

Build the application with:

$ cd esp32-ds18b20-ledc
$ idf.py menuconfig    # set your serial configuration and the 1-Wire GPIO - see below
$ idf.py build
$ idf.py -p (PORT) flash monitor

The program should detect your connected devices and periodically obtain temperature readings from them, displaying them on the console.

Dependencies

This application makes use of the following components (included as submodules):

Hardware

To run this example, connect one or more DS18B20 devices to a single GPIO on the ESP32. Use the recommended pull-up resistor of 4.7 KOhms, connected to the 3.3V supply.

idf.py menuconfig can be used to set the 1-Wire GPIO.

Connect two leds on GPIO 19 and 21 with a small resistor (69 ohms).

Acknowledgements

"1-Wire" is a registered trademark of Maxim Integrated.