Using Sensors with the Raspberry Pi Pico
Using Sensors with the Raspberry Pi Pico
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.
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About the Author
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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
- IC
-
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
- Notes
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