11198 a2200169 4500 20241018162121.0 241018b |||||||| |||| 00| 0 eng d 9789352136698 English Igoe T. 193662 Making Things Talk 3rd SPD 2023 474 Contents Preface ............................................................................. xi Who This Book Is For....................................................................... xii What You Need to Know ................................................................... . xiii Contents of This Book..................................................................... . xiii On Buying Parts .......................................................................... . xiv Using Code Examples ...................................................................... xv Using Circuit Examples ..................................................................... xv Note on the Second Edition ................................................................ . xvi Note on the Third Edition .................................................................. xvii Acknowledgments ....................................................................... . xviii Chapter 1: The Tools ................................................................. .1 It Starts with the Stuff You Touch ............................................................. 2 It’s About Pulses ............................................................................ 2 Computers of All Shapes and Sizes ........................................................... 3 Good Habits................................................................................ 4 Tools ...................................................................................... 5 Using an Oscilloscope ...................................................................... 42 It Ends with the Stuff You Touch ............................................................. 43 Chapter 2: The Simplest Network..................................................... 45 Supplies for Chapter 2 ..................................................................... 46 Layers of Agreement ....................................................................... 48 Making the Connection: The Lower Layers................................................... . 50 Project 1: Type Brighter .................................................................. 54 Project 2: Monski Pong................................................................... 58 Flow Control............................................................................... 72 Project 3: Wireless Monski Pong .......................................................... 74 Project 4: Making Your Own Arduino-Compatible Board ..................................... 78 Conclusion ................................................................................ 84 Chapter 3: A More Complex Network .................................................. 87 Supplies for Chapter 3 ..................................................................... 88 Network Maps and Addresses............................................................... 89 Clients, Servers, and Message Protocols .................................................... . 96 Project 5: Networked Cat................................................................ 107 Conclusion ............................................................................... 132 Chapter 4: Look, Ma, No Computer! Microcontrollers on the Internet..................... 135 Supplies for Chapter 4 .................................................................... 136 Introducing Network Modules .............................................................. 137 Project 6: Hello Internet! ................................................................ 139 An Embedded Network Client Application ................................................... 147 Project 7: Networked Air-Quality Meter ................................................... 147 Data Formats............................................................................. 157 Representational State Transfer and Web APIs ............................................... 160 Programming and Troubleshooting Tools for Embedded Modules .............................. 164 Conclusion ............................................................................... .171 Chapter 5: Communicating in (Near) Real Time........................................ .173 Supplies for Chapter 5 .................................................................... 174 Interactive Systems and Feedback Loops ................................................... 175 Transmission Control Protocol: Sockets & Sessions .......................................... 176 Project 8: A Video Control Application .................................................... 177 The Controller Client ...................................................................... 179 Project 9: A WebSocket Video Controller .................................................. 191 The Server and Browser Client ............................................................. 193 The WebSocket Controller Client ........................................................... 199 Conclusion .............................................................................. .202 Chapter 6: Wireless Communication ................................................. 205 Supplies for Chapter 6 ................................................................... .206 Why Isn’t Everything Wireless? ............................................................ .208 Two Flavors of Wireless: Infrared and Radio................................................. .209 Project 10: Infrared Control of a Digital Camera............................................ 211 How Radio Works ......................................................................... 214 Radio Networks........................................................................... 217 Buying Radios ............................................................................ 219 Project 11: Duplex Radio Transmission .................................................... 221 Project 12: Bluetooth LE Camera Control................................................. .228 Conclusion .............................................................................. .240 Chapter 7: Sessionless Networks and Binary Protocols ................................. 243 Supplies for Chapter 7.................................................................... .244 Sessions vs. Messages ................................................................... .246 Broadcast vs. Direct Messages ............................................................. 247 Project 13: Networked Candles........................................................... 251 XBee: Another Message-Based Protocol ................................................... .262 Project 14: Reporting Toxic Chemicals in the Shop ........................................ .266 Conclusion .............................................................................. .280 Chapter 8: How to Locate (Almost) Anything.......................................... 283 Supplies for Chapter 8 ................................................................... .284 Network Location and Physical Location ................................................... .286 Determining Distance .................................................................... .289 Project 15: Infrared Distance Ranger..................................................... .290 Project 16: Ultrasonic Distance Ranger................................................... . 292 Project 17: Reading Received Signal Strength............................................. .295 Determining Position Through Trilateration ................................................. .299 Project 18: Geolocation Services and the NMEA Protocol .................................. .300 Determining Orientation and Attitude ...................................................... . 307 Project 19: Determining Heading Using a Digital Compass ................................. .309 Project 20: Determining Attitude ......................................................... 312 Conclusion ............................................................................... 321 Chapter 9: Identification ........................................................... 323 Supplies for Chapter 9 ................................................................... . 324 Physical Identification .................................................................... .326 Project 21: Color Recognition Using a Webcam ........................................... .328 Project 22: Face Detection Using a Webcam .............................................. . 332 Project 23: 2D Barcode Recognition Using a Webcam ..................................... . 335 Project 24: Reading RFID Tags .......................................................... .340 Project 25: Reading and Writing NDEF Messages ......................................... .343 Project 26: NFC Meets Home Automation................................................ .345 Security of Networked Devices ............................................................ .354 Project 27: Two-Factor Authentication Using NFC ......................................... . 355 Network Identification.................................................................... .369 Project 28: IP Geocoding ................................................................ 371 Conclusion ............................................................................... 374 Chapter 10: Mobile Phone Networks and the Physical World............................. 377 Supplies for Chapter 10 ................................................................... 378 One Big Network......................................................................... .380 Project 29: CatCam Redux ............................................................. .383 Project 30: Phoning the Thermostat..................................................... .402 Text-Messaging Interfaces ................................................................ .408 Microcontrollers on Mobile Phone Networks................................................. 411 Native Applications for Mobile Phones ...................................................... 417 Project 31: Personal Mobile Datalogger .................................................. .423 Conclusion .............................................................................. .439 Appendix: Where to Get Stuff ....................................................... 441 Hardware ............................................................................... .445 Software ................................................................................ .448 BK 359830 359830 0 0 ddc 0 0 CCEP CCEP 2024-10-14 115 1237.50 0 629.895 IGO CCEP-BK-67506 2024-10-14 00:00:00 1650.00 2024-10-14 BK