To build electronic projects that can sense the physical world, you need to build circuits based around sensors: electronic components that react to physical phenomena by sending an electrical signal. Even with only basic electronic components, you can build useful and educational sensor projects.
But if you incorporate Arduino or Raspberry Pi into your project, you can build much more sophisticated projects that can react in interesting ways and even connect to the Internet. This book starts by teaching you the basic electronic circuits to read and react to a sensor. It then goes on to show how to use Arduino to develop sensor systems, and wraps up by teaching you how to build sensor projects with the Linux-powered Raspberry Pi.
Chapter 1 Sensors
Project 1: Photoresistor to Measure Light
Chapter 2 Basic Sensors
Project 2: A Simple Switch
Project 3: Buzzer Volume Control
Project 4: Hall Effect
Project 5: Firefly
Chapter 5 Sensors and Arduino
Project 6: Momentary Push-Button and Pull-Up Resistors
Project 7: Infrared Proximity to Detect Objects
Project 8: Rotation (Pot)
Project 9: Photoresistor to Measure Light
Project 10: FlexiForce to Measure Pressure
Project 11: Measuring Temperature (LM35)
Project 12: Ultrasonic Distance Measuring (HC-SR04)
Chapter 6 Sensors and the Raspberry Pi
Project 13: Momentary Push Button
Project 14: Blink an LED with Python
Project 15: Adjustable Infrared Switch
Project 16: Potentiometer to Measure Rotation
Project 17: Photoresistor
Project 18: FlexiForce
Project 19: Temperature Measurements (LM35)
Project 20: Ultrasonic Distance
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