Using Sensors with the Raspberry Pi Pico
Want to use sensors in your next Raspberry Pi Pico but don't know which sensor to use, how to connect it or how to use it in your code? This book is for you!
Here you will find detailed explanations of how sensors work, how to connect them to the Pi Pico and how to use them in C/C++, MicroPython and CircuitPython.
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Want to use sensors in your next Raspberry Pi Pico but don't know which sensor to use, how to connect it or how to use it in your code? This book is for you!
Here you will find detailed explanations of how sensors work, how to connect them to the Pi Pico and how to use them in C/C++, MicroPython and CircuitPython.
About
About the Book
In this book, you will learn about sensors and how to use them with the Raspberry Pi Pico. You will find detailed explanations of how sensors work, how to connect them to the Pi Pico, and how to use them with C/C++ (using the official SDK or the Arduino IDE), MicroPython, and CircuitPython.
The book is now complete.
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Author
About the Author
Daniel Quadros
Hi, my name is Daniel Quadros.
I am an Electronic Engineer, but I have always worked as a software developer. Hardware is a hobby for me, and for the last two decades, I had a lot of fun with microcontrollers and participating in the Garoa Hacker Clube.
I have a blog and YouTube channel, both in Portuguese (I live in Brazil). More recently, I started a blog (in English) about my experiences with the Raspberry Pi Pico (and other boards based on the RP2040).
In the 80s I wrote a few books about programming the IBM PC in Assembly language. It took me a long time, but I've started writing books again!
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Contents
Table of Contents
Introduction
- The Raspberry Pi Pico
- Getting the Example Code
- Using the Examples
- Organization of This Book
- Acknowledgments
- How to Send Feedback
Using Sensors
- Measuring What We Really Want
- A Sensor Can Affect What You Are Measuring
- Accuracy and Resolution
- ADC Errors
- Averaging Readings
- Calibration
- Readings Validation
Programming the Raspberry Pi Pico
- Libraries
- The Official C/C++ SDK
- The Arduino IDE
- MicroPython
- CircuitPython
- Thonny IDE
- Seeing Program Output
- Which Environment Should I Use?
Interfaces and Protocols
- A Little Bit of Electronics
- A General View of Interfaces
- The ADC - Analog to Digital Converter
- Connecting Digital Signals from Sensors to the Pico
- GPIO - General Purpose (Digital) Input and Output
- UART - Universal Asynchronous Receiver and Transceiver
- SPI - Serial Peripheral Interface
- I2C
Basic Digital Sensors
- Read This Before Trying the Examples
- Buttons
- Reed Switch
- Keypads
- Vibration Sensor (SW-420)
- Presence Sensor (PIR)
- Flame Sensor
- Digital Sound Sensor
- MQ Gas Sensors
- Digital Hall Effect Sensors
Analog Sensors
- Potentiometers
- Analog Joysticks
- Light-Dependent Resistors (LDR)
- Phototransistor
- Using LEDs as a Light Sensor
- Gas Sensor
- Analog Hall Effect Sensor
Temperature Sensors
- Thermistor
- LM35D and TMP36
- DS18B20
- DHT11 and DHT22
- LM75A
- HDC1080
- MCP9808
- AHT10
- Sensors Comparison Table
Atmospheric Pressure Sensors
- BMP085 and BMP180
- BMP280 and BME280
- BMP390
- Sensors Comparison Table
Electronic Compass, Accelerometers, and Gyroscopes
- HMC5883L, HMC5983, and QMC5883L 3-Axis Magnetic Sensor
- ADXL345 3-Axis Accelerometer
- MMA8452 3-Axis Accelerometer
- MPU6050 3-Axis Accelerometer and Gyroscope
- Sensors Comparison Table
Miscellaneous Sensors
- HC-SR04 Ultrasonic Sensor
- Rotary Encoder
- Load Cell (Strain Gauge)
- iButton
Fingerprint Sensors
- Fingerprints Basics
- FPM10A Sensor Protocol
- Sensor Configuration
- Enrolling a Fingerprint
- Identifying a Fingerprint
- Transferring the Image and the Template
- Fingerprint Sensor Example
RFID
- RFID 125kHz
- MIFARE and NFC
Conclusion
- Choosing Sensors and Using Them Correctly
- Using a New Sensor
- Writing Code and Using Libraries
- What’s Next?
Appendix A - Other Boards Based on the RP2040 Microcontroller
- Adafruit Feather RP2040
- SeeedStudio XIAO RP2040
- Arduino Nano RP2040 Connect
- Raspberry Pi Pico W
Appendix B - Non-Original Sensors
- Non-original DS18B20 Temperature Sensors
- Conterfeit MPU6050 Accelerometer
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