You're reading from DIY Microcontroller Projects for Hobbyists The ultimate project-based guide to building real-world embedded applications in C and C++ programming

Product type Paperback

Published in Jul 2021

Publisher Packt

ISBN-13 9781800564138

Length 320 pages

Edition 1st Edition

Languages

Tools

ARM Cortex

Concepts

Microcontroller

Authors (2):

Miguel Angel Garcia-Ruiz

Pedro Cesar Santana Mancilla

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Table of Contents (16) Chapters

Preface

1. Chapter 1: Introduction to Microcontrollers and Microcontroller Boards

2. Chapter 2: Software Setup and C Programming for Microcontroller Boards FREE CHAPTER

3. Chapter 3: Turning an LED On or Off Using a Push Button

4. Chapter 4: Measuring the Amount of Light with a Photoresistor

5. Chapter 5: Humidity and Temperature Measurement

6. Chapter 6: Morse Code SOS Visual Alarm with a Bright LED

7. Chapter 7: Creating a Clap Switch

8. Chapter 8: Gas Sensor

9. Chapter 9: IoT Temperature-Logging System

10. Chapter 10: IoT Plant Pot Moisture Sensor

11. Chapter 11: IoT Solar Energy (Voltage) Measurement

12. Chapter 12: COVID-19 Digital Body Temperature Measurement (Thermometer)

13. Chapter 13: COVID-19 Social-Distancing Alert

14. Chapter 14: COVID-19 20-Second Hand Washing Timer

15. Other Books You May Enjoy

Showing the temperature on an LCD

This section describes how to display the IR temperature measurement on an LCD through the I2C bus. The temperature data is sent by the Arduino Uno to the Blue Pill, as shown in the previous section. Figure 12.8 shows a Fritzing diagram containing the microcontroller boards, the LCD, and the IR temperature sensor:

Figure 12.8 – The LCD connected to the I2C bus

As Figure 12.8 shows, the LCD connection is simple. It requires four wires only, because the LCD used in this chapter is I2C-capable, having an I2C interface in the back. The following are the steps for connecting the LCD to the Blue Pill: