Making Things Smart by Williams, Gordon -- Read -- Imperial Library of Trantor

Index

Preface

Conventions Used in This Book Using Code Examples O’Reilly Safari How to Contact Us Acknowledgments

1. Introduction

Why Make Things Smart? Learning through Making Making in JavaScript Tools and Materials

I. Microcontrollers 2. What Is a Microcontroller?

ARM History Programming a Microcontroller

3. Getting Started with Espruino

Getting Ready

Mac and Chromebook Windows Linux (Including Raspberry Pi)

Plugging In Installing Software Connecting Updating Firmware First Commands The Editor

4. Getting Started with JavaScript

Getting Ready Comments Data Types

Undefined Numbers Strings Booleans

Math

Math with Numbers Math with Strings Math with Strings and Numbers The Helpful Language

Variables Increment and Decrement Objects Functions

parseInt Functions in Objects (Methods) console.log Defining Functions Inline Functions

Arrays Object Orientation Bitwise Arithmetic

Bitwise Operators Bit Shifting

If Statements && and || Ternary Operators for Loops Exceptions

II. Motors 5. What Is an Electric Motor?

Experiment 1: Faraday’s Motor Experiment 2: Motor with Commutator Brushless DC Motors Experiment 3: Stepper Motor Experiment 4: Stepper Motor Control Experiment 5: More Stepper Motor Control

6. Stroboscope Tachometer

Finding a Fan Experiment 6: Detecting Speed Experiment 7: Stroboscope Experiment 8: Brighter Stroboscope

7. John Logie Baird’s TV

Experiment 9: Persistence of Vision Experiment 10: John Logie Baird’s TV

III. Electromechanics 8. Make a Simple Robot

Experiment 11: Try Out a Servo Motor Experiment 12: Make a Simple Robot Experiment 13: Following Light

9. Pen Plotter

Experiment 14: Pen Plotter

Software

10. Digital Pinhole Camera

Experiment 15: Making a Digital Camera

Complete Listing

11. Printer

Experiment 16: Making a Printer

Software Complete Listing

IV. Communication 12. Wired Communication

Clocking Experiment 17: Making an Oscilloscope

Using the Oscilloscope

13. Cutting the Cord: Infrared

Experiment 18: Making the IR Receiver Experiment 19: Decoding IR Signals Experiment 20: Using Our Decoded Signal Experiment 21: Using Our Remote Control on the Net, with dweet.io Experiment 22: Using Our Remote Control on the Net, with IFTTT

14. Cutting the Cord: Radio Signals

Experiment 23: Wiring Up the Receiver Experiment 24: Wiring Up a Transmitter Experiment 25: Transmitting from Espruino Experiment 26: Decoding the Received Data

15. Connecting with WiFi

Experiment 27: Adding WiFi to Your Pico

Making This Tidier

Experiment 28: Testing Your Wiring Experiment 29: Connecting to WiFi Experiment 30: Sending Data to the Internet Experiment 31: Getting Data from the Internet Experiment 32: Creating a Server Controlling Things

16. Bluetooth Low Energy

So, How Does Bluetooth Low Energy Work? How Can We Use Bluetooth LE Ourselves? Web Bluetooth Experiment 33: Using Puck.js Experiment 34: Making a Door Opening Counter Experiment 35: Advertising Door Openings Experiment 36: Receiving Door Openings with Eddystone

V. Putting It All Together 17. XY Plotter

Experiment 37: Making an XY Table Experiment 38: Controlling the XY Table

18. Internet-Connected Plotter

Experiment 39: Internet-Connected Plotter

VI. Conclusion 19. So What Now? A. Parts and Materials

Common Parts

General Espruino Boards Breadboard Patch Wires/Jumper Leads Resistors, Capacitors, LEDs, Light-Dependent Resistors Neodynium Magnets Single Core Wire Wood

Motors Section

General A Source of DC Power (Around 6–12v) L293D Motor Driver IC Brushless Fan P36NF06L FET

Electromechanics Section

General Servo Motors and Extension Wire Lobster Bands A Small Corkboard (Roughly 30cm×40cm) Threaded Rod and Nut

Communication Section

A Headphone Lead with a 3.5mm Jack Plug IR Receiver (HX1838, VS1838, TSOP348, or TSOP344) and Remote Control A 315Mhz (USA) or 433Mhz (Europe) Radio Transmitter/Receiver ESP8266 ESP01

Putting It All Together

2x Springs Smooth Aluminum Bar and 30mm×30mm×30mm Cube of Solid Wood or Plastic 10×40mm Diameter Pulleys 5M of Fishing Line Two Small Geared Stepper Motors

B. Common Espruino Commands and Variables

print(text) or console.log(text) LED1 and LED2 BTN1 or BTN digitalWrite(pin[s], value) digitalRead(pin[s]) Pin.read(), Pin.write(value), Pin.set(), and Pin.reset() analogWrite(pin, value[, options]) analogRead(pin) digitalPulse(pin, polarity, time[s]) pinMode(pin, mode) reset() save() load() onInit()

C. Espruino Assembler

So How Do We Run This Code? Registers Instructions Getting More Complex

Index

← Prev
Back
Next →

← Prev
Back
Next →