Content
About the Raspberry Pi ............................................................................................ 10
Raspberry Pi Pin Numbering Introduction .................................................................. 11
Raspberry Pi GPIO Library Introduction ..................................................................... 13
How to Use wiringPi and RPi.GPIO ............................................................................ 15
Lesson 1 Blinking LED ............................................................................................. 19
Lesson 2 Controlling an LED by Button ...................................................................... 22
Lesson 3 Controlling an RGB LED by PWM .................................................................. 25
Lesson 4 Active Buzzer ............................................................................................ 28
Lesson 5 Passive Buzzer .......................................................................................... 31
Lesson 6 Controlling an LED by Hall Sensor ................................................................ 34
Lesson 7 Controlling an LED by Reed ......................................................................... 37
Lesson 8 How to Use a Relay .................................................................................... 40
Lesson 9 Laser Transmitter ...................................................................................... 43
Lesson 10 Laser Receiver ......................................................................................... 46
Lesson 11 How to Control a DC Motor ........................................................................ 49
Lesson 12 Controlling an LED by Limit Switch ............................................................. 52
Lesson 13 Controlling an LED by Vibration Switch ....................................................... 55
Lesson 14 Rotary Encoder ....................................................................................... 59
Lesson 15 Controlling an LED by Touch Button ........................................................... 63
Lesson 16 Movement Detection Based on PIR ............................................................. 67
Lesson 17 Flame Sensor .......................................................................................... 71
Lesson 18 Line Finder ............................................................................................. 74
Lesson 19 Measuring the Temperature via DS18B20 .................................................... 77
Lesson 20 Temperature & Humidity Sensor - DHT-11 .................................................. 82
Lesson 21 Measuring the Distance ............................................................................. 85
Lesson 22 Acceleration Sensor - ADXL345 .................................................................. 88
Lesson 23 Barometric Pressure Sensor - BMP180 ........................................................ 91
Lesson 24 Dot-matrix Display ................................................................................... 94
Lesson 25 LED Bar Graph ......................................................................................... 97
Lesson 26 How to Drive the Segment Display ............................................................ 100
Lesson 27 Potentiometer ....................................................................................... 103
Lesson 28 Photoresistor ........................................................................................ 108
Lesson 29 Thermistor ........................................................................................... 111
Lesson 30 Water Level Detection ............................................................................ 115
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