You're reading from TinyML Cookbook - Second Edition

Product type Book

Published in Nov 2023

Publisher Packt

ISBN-13 9781837637362

Pages 664 pages

Edition 2nd Edition

Languages

Concepts

Machine Learning

Author (1):

Gian Marco Iodice

Table of Contents (16) Chapters

Preface

1. Getting Ready to Unlock ML on Microcontrollers

2. Unleashing Your Creativity with Microcontrollers

3. Building a Weather Station with TensorFlow Lite for Microcontrollers

4. Using Edge Impulse and the Arduino Nano to Control LEDs with Voice Commands

5. Recognizing Music Genres with TensorFlow and the Raspberry Pi Pico – Part 1

6. Recognizing Music Genres with TensorFlow and the Raspberry Pi Pico – Part 2

7. Detecting Objects with Edge Impulse Using FOMO on the Raspberry Pi Pico

8. Classifying Desk Objects with TensorFlow and the Arduino Nano

9. Building a Gesture-Based Interface for YouTube Playback with Edge Impulse and the Raspberry Pi Pico

10. Deploying a CIFAR-10 Model for Memory-Constrained Devices with the Zephyr OS on QEMU

11. Running ML Models on Arduino and the Arm Ethos-U55 microNPU Using Apache TVM

12. Enabling Compelling tinyML Solutions with On-Device Learning and scikit-learn on the Arduino Nano and Raspberry Pi Pico

13. Conclusion

14. Other Books You May Enjoy

15. Index

Reading temperature and humidity with the DHT22 sensor and the Raspberry Pi Pico

Unlike the Arduino Nano, the Raspberry Pi Pico requires an external sensor and an additional software library to measure the temperature and humidity.

In this recipe, we will show how to use the DHT22 sensor with a Raspberry Pico to get temperature and humidity measurements.

Getting ready

The temperature and humidity sensor module considered for the Raspberry Pi Pico is the low-cost AM2302.

As shown in the following diagram, the AM2302 module is a through-hole component with three pins that integrates the DHT22 temperature and humidity sensor:

Figure 3.17: The AM2302 module with the DHT22 sensor

Figure 3.18 summarizes the key characteristics of the DHT22 sensor:

Figure 3.18: Key characteristics of the DHT22 temperature and humidity sensor

DHT11 is another popular temperature and humidity sensor from the DHT family. However, we cannot...