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

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Connecting an IR temperature sensor to the microcontroller board

This section explains the main technical characteristics of the MLX90614 temperature sensor. It also shows how to connect it to the Blue Pill microcontroller board using the I2C protocol.

First, let's explain the main characteristics of the MLX90614 sensor.

The MLX90614 IR sensor

The MLX90614 sensor, manufactured by the company Melexis, is a powerful yet compact IR sensor. This sensor uses IR rays to measure the amount of heat generated by the human body or by basically any object. Being a non-contact thermometer, it reduces chance of spreading disease when checking the body temperature, and you don't need to clean it.

The MLX0-614 is technically a sensor contained in an integrated circuit (IC), since it has extra electronic components and smaller circuits, including an ADC, a voltage regulator, and a digital-signal processor (DSP).

The following are some of the sensor's technical characteristics...