DIY Microcontroller Projects for Hobbyists

Cover
Copyright
Contributors
Table of Contents
Preface
Chapter 1: Introduction to Microcontrollers and Microcontroller Boards
	Technical requirements
	Introduction to microcontrollers
		Microcontroller boards
	An overview of analog and digital electronics necessary for carrying out the book's projects
		Basic electronic components
		The diode
		The solderless breadboard
	Description of the Blue Pill and Curiosity Nano microcontroller boards
		Installing the IDEs
	Your first project – a blinking LED
		Running the blinking LED example with the Blue Pill board
		Running the blinking LED example on the Curiosity Nano board
	Summary
	Further reading
Chapter 2: Software Setup and C Programming for Microcontroller Boards
	Technical requirements
	Introducing the C programming language
		The basic structure of the C language
	Introducing Curiosity Nano microcontroller board programming
	Introducing Blue Pill microcontroller board programming
	Example – Programming and using the microcontroller board's internal LED
		Programming the Blue Pill's internal LED
	Summary
	Further reading
Chapter 3: Turning an LED On or Off Using a Push Button
	Technical requirements
	Introducing push buttons
	Understanding electrical noise from push buttons
		Debouncing a push button via hardware
		Debouncing a push button via software
	Connecting an LED to a microcontroller board port and using an internal pull-up resistor
		Debouncing a push button via software connected to the Blue Pill
		Turning an LED on or off with a push button on the Curiosity Nano
	Testing out the push button
	Summary
	Further reading
Chapter 4: Measuring the Amount of Light with a Photoresistor
	Technical requirements
	Understanding sensors
		Defining sensors
		What are sensor modules?
	Introducing photoresistors
	Connecting a photoresistor to a microcontroller board port
		Connecting a photoresistor to a Blue Pill board
	Coding the photoresistor values and setting up ports
		Connecting a photoresistor to a Curiosity Nano board
		Connecting a photoresistor sensor module to the microcontroller boards
	Testing out the photoresistor
	Summary
	Further reading
Chapter 5: Humidity and Temperature Measurement
	Technical requirements
	Introducing the DHT11 humidity and temperature sensor module
		What is relative humidity?
		The DHT11 pins and their values
	Connecting a DHT11 sensor module to the microcontroller boards
		Connecting the DHT11 to the Blue Pill board
		Connecting an LCD to the Blue Pill
		Connecting an LM35 temperature sensor to the Curiosity Nano board
	Coding to get data from the sensor module
		Programming the DHT11 sensor for the Blue Pill board
		Coding the sensor module and the 1602 LCD
		Programming the LM35 sensor on the Curiosity Nano board
	Showing the humidity and temperature data results on the serial port monitor
		Plotting the data
	Summary
	Further reading
Chapter 6: Morse Code SOS Visual Alarm with a Bright LED
	Technical requirements
	Understanding Morse code and the SOS message
	Introducing super-bright LEDs and calculating their necessary resistors
	Connecting the resistor and the super-bright LED to the microcontroller board
		Connecting the super-bright LED to the Curiosity Nano
	Coding the SOS Morse code signal
		The SOS message code for the Curiosity Nano
	Testing the visual alarm
	Summary
	Further reading
Chapter 7: Creating a Clap Switch
	Technical requirements
	Connecting a microphone to a microcontroller board port
		Understanding the electret microphone module
		Connecting the components
	Coding your clap switch sketch
	Coding a clap switch with two clapping sounds
	Coding a clap switch with a timer between claps
	Improving the project performance
	Summary
	Further reading
Chapter 8: Gas Sensor
	Technical requirements
	Introducing the MQ-2 gas sensor
	Connecting a gas sensor to the STM32 microcontroller board
		Interfacing for digital reading
		Interfacing for analog reading
	Writing a program to read the gas concentration over the sensor board
		Coding for digital reading
		Coding for analog reading
	Testing the system
	Summary
	Further reading
Chapter 9: IoT Temperature-Logging System
	Technical requirements
	Connecting a temperature sensor to the Blue Pill board
		Introducing the DS18B20 temperature sensor module
		Connecting the components
	Coding a temperature reading system
	Learning to connect the ESP8266 module
		An introduction to the ESP8266 Wi-Fi module
		Connecting an ESP8266 Wi-Fi module
	Coding a program to send the sensed temperature to the internet
	Connecting the STM32 Blue Pill board to the internet
	Summary
	Further reading
Chapter 10: IoT Plant Pot Moisture Sensor
	Technical requirements
	Connecting a soil moisture sensor to the Blue Pill board
		Introducing soil moisture sensors
		Connecting the components
	Reading data from the soil moisture sensor module
	Coding a program to send the sensed data to the internet
	Showing sensor data results over the internet
	Summary
	Further reading
Chapter 11: IoT Solar Energy (Voltage) Measurement
	Technical requirements
	Connecting a solar panel to the Blue Pill board
		Introducing the solar panel
		The B25 voltage sensor
		Connecting the components
	Reading data from a voltage sensor module
	Coding a program to send the sensed data to the internet
	Showing sensor data results over the internet
	Summary
	Further reading
Chapter 12: COVID-19 Digital Body Temperature Measurement (Thermometer)
	Technical requirements
	Programming the I2C interface
		The I2C protocol
		I2C coding
		Coding the Arduino Uno software (peripheral)
		Coding the Blue Pill software (controller)
	Connecting an IR temperature sensor to the microcontroller board
		The MLX90614 IR sensor
		The GY-906 sensor module
		Connection of the IR sensor to an Arduino Uno
		Connecting the Blue Pill to the Arduino Uno
	Showing the temperature on an LCD
	Testing the thermometer
	Summary
	Further reading
Chapter 13: COVID-19 Social-Distancing Alert
	Technical requirements
	Programming a piezoelectric buzzer
		Connecting the components
	Connecting an ultrasonic sensor to the microcontroller board
		Connecting the components
	Writing a program for getting data from the ultrasonic sensor
	Testing the distance meter
	Summary
	Further reading
Chapter 14: COVID-19 20-Second Hand Washing Timer
	Technical requirements
	Programming the counter (timer)
	Showing the timer on an LCD
	Connecting an ultrasonic sensor to the microcontroller board
		What is an ultrasonic sensor?
		How does an ultrasonic sensor work?
	Putting everything together – think of a protective case for the project!
	Testing the timer
	Summary
	Further reading
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Index