Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Building Your Own Lightsaber

Fe6b81005d1553accd6b2a28f6a2bef1?s=47 Pete Hodgson
January 03, 2014
Programming
94
4.6k

Building Your Own Lightsaber

Presented at CodeMash 2014

Fe6b81005d1553accd6b2a28f6a2bef1?s=128

Pete Hodgson

January 03, 2014
Tweet

More Decks by Pete Hodgson

See All by Pete Hodgson
A Journey Into Feature Toggles - OSCON Austin 2017
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
4
240
Test-driven Client-side JS
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
4
550
Functional Reactive JavaScript
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
8
530
different.js - Forward JS 2014
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
4
550
Railsconf2014
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
7
1.1k
iOS Unit Testing Workshop
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
3
290
Multi-platform Mobile with Calatrava - May 2013
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
2
190
Unit testing with Kiwi - CocoaConf San Jose 2013
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
1
330
Automated Mobile Acceptance Testing Presentation - mdevcon 2013
Fe6b81005d1553accd6b2a28f6a2bef1?s=48 phodgson
2
450

Other Decks in Programming

See All in Programming
競プロへの誘 -いざな-
Efbc292fd2e2c4caa0ede1d1532804a9?s=48 u76ner
0
370
あなたの会社の古いシステム、なんとかしませんか？～システム刷新から考えるDX化への道筋とバリエーション～/webinar20220420-grapecity
Dcbf2269af2483cabf43128ad1718c11?s=48 grapecity_dev
0
130
Hapticをカスタマイズしてみよう / ZOZO Tech Talk #6 Customize Haptic
3623c11f38517055d9040073ed81913b?s=48 endoumari
0
320
Learning DDD輪読会#4 / Learning DDD Book Club #4
E10ba38646a905c8cd2c893c84d5c520?s=48 suzushin54
1
140
Nix for Scala folks
08f642741fba006656cb86fb61c160b3?s=48 kubukoz
0
130
Git Rebase
E0e036f89c14b3e59640318eedf9670b?s=48 bkuhlmann
7
1k
GraphQL+KMM開発でわかったこと / What we learned from GraphQL+KMM development
E505897a79eede1a676f92740261e8f8?s=48 kubode
0
130
実録mruby組み込み体験
5b3338b3676d4f7091a575e584f3a4f4?s=48 coe401_
0
110
【PHPerKaigi2022】Mongo に溜まった約1.6億件の記事データを BigQuery へ …
C9206c01d92fe6141158122f2c6e95fa?s=48 userkazun
0
110
LegalForceの契約データを脅かすリスクの排除と 開発速度の向上をどうやって両立したか
Db8ec54bcaba4695821acf233a25afe9?s=48 aibou
0
140
CIでAndroidUIテストの様子を録画してみた
46b3bc302e3a40f8df60cfb60d59c313?s=48 mkeeda
0
180
Better Reliability through Observability (and Experimentation)
8c73ec710b03be8909e71ad500866934?s=48 ksatirli
PRO
1
260

Featured

See All Featured
Building Better People: How to give real-time feedback that sticks.
9952dfcd5d338f8a8e7175c8a8f65fb5?s=48 wjessup
343
17k
Easily Structure & Communicate Ideas using Wireframe
0c6fd6a08d0f898159cda7cafcacf07f?s=48 afnizarnur
181
15k
Designing Experiences People Love
1b75d89772b7eea1f6c89fbf362607d9?s=48 moore
130
22k
We Have a Design System, Now What?
95d9f37115fbb0d13135d0f77132f856?s=48 morganepeng
35
2.9k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
B3d6434763caa0ef5dc4b792662c49f7?s=48 smashingmag
237
19k
Rails Girls Zürich Keynote
24fc194843a71f10949be18d5a692682?s=48 gr2m
86
12k
Adopting Sorbet at Scale
2bb923c57a1fdc3a2eb484bb8d565fd2?s=48 ufuk
63
7.5k
JavaScript: Past, Present, and Future - NDC Porto 2020
3ab1249be442027903e1180025340b3f?s=48 reverentgeek
37
3.2k
How GitHub Uses GitHub to Build GitHub
78b475797a14c84799063c7cd073962f?s=48 holman
465
280k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
E195ae45320d9202eaa01c9f1d31a416?s=48 marktimemedia
15
910
How to name files
0a4f62e90c976eeb44d33add75cca5af?s=48 jennybc
39
58k
CSS Pre-Processors: Stylus, Less & Sass
7559f6cff1f5efc2d210965febd4d71c?s=48 bermonpainter
349
27k

Transcript

  1. Building your own Lightsaber

  2. me me me Pete Hodgson Consultant at ThoughtWorks @ph1 blog.thepete.net

  3. TSA Pro-Tip™

  4. None
  5. None

  6. Green Field http://www.flickr.com/photos/jillclardy/3213748255

  7. Continuous Integration

  8. Feedback

  9. None

  10. Feedback

  11. http://www.flickr.com/photos/johnmueller/52621490/ what if you have
 no build box?

  12. None

  13. Raspberry Pi

  14. None

  15. Raspberry Pi

  16. visual indicator aka build light

  17. None
  18. None

  19. Build
 Light

  20. Pretending to work

  21. raspberry pi & build light

  22. done.

  23. done. ?

  24. build light build my own lightsaber

  25. Learning by Doing

  26. Learning Doing

  27. Learning Doing Learning By Doing

  28. Choose a “right-sized“ problem

  29. build light build my own lightsaber

  30. LEDs low voltage (can be powered via USB) bright flexible

    (blinky! colors!)

  31. all the colors

  32. The Drefus Model

  33. Beginner Expert

  34. Beginner detailed step-by-step instructions no wider context

  35. Beginner detailed step-by-step instructions no wider context Expert wider context

    (goal) no details (yet)

  36. Know where you are on the Drefus scale

  37. None

  38. all the colors

  39. multi-color LEDs Search

  40. multi-color LEDs Search an LED can only be one color…

    but LEDs can come in many colors… solution: combine different colored LEDs

  41. RGB
 color mixing

  42. vary LED brightness Search

  43. vary LED brightness Pulse Width Modulation P W M Search

  44. Incandescent Bulb Voltage Brightness

  45. LED Voltage Brightness

  46. voltage 100% 0% time brightness: 100%

  47. voltage 100% 0% time

  48. 50%
 on 50%
 off duty cycle voltage 100% 0% time

  49. 50%
 on 50%
 off duty cycle brightness: 50% voltage 100%

    0% time

  50. voltage 100% 0% time

  51. 25% on 75% off voltage 100% 0% time

  52. brightness: 25% 25% on 75% off voltage 100% 0% time

  53. Don't trust your intuition '

  54. Red LED + Green LED + Blue LED + PWM

    = all the colors!
  55. None

  56. Raspberry PI red LED green LED blue LED PWM

  57. GPIO Pins

  58. Raspberry Pi has two GPIO pins which capable of PWM

    output. Our light needs three.

  59. Arduino

  60. Arduino is an Open-Source electronics prototyping platform based on flexible,

    easy-to-use hardware and software. - arduino.cc

  61. Arduino

  62. Raspberry PI red LED green LED blue LED PWM

  63. Raspberry PI red LED green LED blue LED PWM Arduino

    ???

  64. Feature-creep as a learning tool

  65. Raspberry PI red LED green LED blue LED PWM Arduino

    ???
  66. None

  67. baby steps, towards an eventual goal.

  68. sketch 1 blinking an LED (Hello World of hardware)

  69. None

  70. IO pin ground pin

  71. None

  72. pin “high” (+ve voltage)

  73. pin “low” (0 voltage)

  74. int LED_PIN = 6;! ! void setup() { ! pinMode(LED_PIN,

    OUTPUT); ! }! ! void loop() {! digitalWrite(LED_PIN, HIGH);! delay(1000); ! digitalWrite(LED_PIN, LOW);! delay(1000); ! }!

  75. sketch 2 fading an LED (PWM)

  76. None

  77. int LED_PIN = 6;! int MAX_BRIGHTNESS = 255;! int brightness

    = 0;! ! void setup() { ! pinMode(LED_PIN, OUTPUT); ! }! ! void loop() {! analogWrite(LED_PIN, brightness);! ! brightness = brightness + 5;! if( brightness > MAX_BRIGHTNESS )! brightness = 0;! ! delay(30);! }!

  78. int LED_PIN = 6;! int MAX_BRIGHTNESS = 255;! int brightness

    = 0;! ! void setup() { ! pinMode(LED_PIN, OUTPUT); ! }! ! void loop() {! analogWrite(LED_PIN, brightness);! ! brightness = brightness + 5;! if( brightness > MAX_BRIGHTNESS )! brightness = 0;! ! delay(30);! }! PWM

  79. sketch 3 mixing colors

  80. None
  81. None
  82. None

  83. int RED_PIN = 3;! int GREEN_PIN = 5;! int BLUE_PIN

    = 6;! int MAX_BRIGHTNESS = 255;! ! void setup() { ! pinMode(RED_PIN, OUTPUT );! pinMode(GREEN_PIN, OUTPUT );! pinMode(BLUE_PIN, OUTPUT );! }! ! void loop() {! byte color[3];! assignRandomColorTo(color);! displayColor(color);! delay(1000); ! }! ! void assignRandomColorTo(byte colorComponents[]){! colorComponents[0] = random(MAX_BRIGHTNESS);!

  84. int RED_PIN = 3;! int GREEN_PIN = 5;! int BLUE_PIN

    = 6;! int MAX_BRIGHTNESS = 255;! ! void setup() { ! pinMode(RED_PIN, OUTPUT );! pinMode(GREEN_PIN, OUTPUT );! pinMode(BLUE_PIN, OUTPUT );! }! ! void loop() {! byte color[3];! assignRandomColorTo(color);! displayColor(color);! delay(1000); ! }! ! void assignRandomColorTo(byte colorComponents[]){! colorComponents[0] = random(MAX_BRIGHTNESS);!

  85. int RED_PIN = 3;! int GREEN_PIN = 5;! int BLUE_PIN

    = 6;! int MAX_BRIGHTNESS = 255;! ! void setup() { ! pinMode(RED_PIN, OUTPUT );! pinMode(GREEN_PIN, OUTPUT );! pinMode(BLUE_PIN, OUTPUT );! }! ! void loop() {! byte color[3];! assignRandomColorTo(color);! displayColor(color);! delay(1000); ! }! ! void assignRandomColorTo(byte colorComponents[]){! colorComponents[0] = random(MAX_BRIGHTNESS);!

  86. ! void loop() {! byte color[3];! assignRandomColorTo(color);! displayColor(color);! delay(1000); !

    }! ! void assignRandomColorTo(byte colorComponents[]){! colorComponents[0] = random(MAX_BRIGHTNESS);! colorComponents[1] = random(MAX_BRIGHTNESS);! colorComponents[2] = random(MAX_BRIGHTNESS);! }! ! void displayColor(byte colorComponents[]){! analogWrite( RED_PIN, colorComponents[0] );! analogWrite( GREEN_PIN, colorComponents[1] );! analogWrite( BLUE_PIN, colorComponents[2] ); ! }!

  87. ! void loop() {! byte color[3];! assignRandomColorTo(color);! displayColor(color);! delay(1000); !

    }! ! void assignRandomColorTo(byte colorComponents[]){! colorComponents[0] = random(MAX_BRIGHTNESS);! colorComponents[1] = random(MAX_BRIGHTNESS);! colorComponents[2] = random(MAX_BRIGHTNESS);! }! ! void displayColor(byte colorComponents[]){! analogWrite( RED_PIN, colorComponents[0] );! analogWrite( GREEN_PIN, colorComponents[1] );! analogWrite( BLUE_PIN, colorComponents[2] ); ! }!

  88. ! void loop() {! byte color[3];! assignRandomColorTo(color);! displayColor(color);! delay(1000); !

    }! ! void assignRandomColorTo(byte colorComponents[]){! colorComponents[0] = random(MAX_BRIGHTNESS);! colorComponents[1] = random(MAX_BRIGHTNESS);! colorComponents[2] = random(MAX_BRIGHTNESS);! }! ! void displayColor(byte colorComponents[]){! analogWrite( RED_PIN, colorComponents[0] );! analogWrite( GREEN_PIN, colorComponents[1] );! analogWrite( BLUE_PIN, colorComponents[2] ); ! }!

  89. ! void loop() {! byte color[3];! assignRandomColorTo(color);! displayColor(color);! delay(1000); !

    }! ! void assignRandomColorTo(byte colorComponents[]){! colorComponents[0] = random(MAX_BRIGHTNESS);! colorComponents[1] = random(MAX_BRIGHTNESS);! colorComponents[2] = random(MAX_BRIGHTNESS);! }! ! void displayColor(byte colorComponents[]){! analogWrite( RED_PIN, colorComponents[0] );! analogWrite( GREEN_PIN, colorComponents[1] );! analogWrite( BLUE_PIN, colorComponents[2] ); ! }!

  90. Raspberry PI red LED green LED blue LED PWM Arduino

    ???

  91. Raspberry PI red LED green LED blue LED PWM Arduino

    ???

  92. Raspberry PI red LED green LED blue LED PWM Arduino

    serial

  93. sketch 4 an echo server (serial IO)

  94. void setup()! {! Serial.begin(57600); // start serial port at 57600

    bps! }! ! void loop() {! waitForInput();! ! static char input[1025];! int bytesRead = Serial.readBytesUntil( '\n', input, 1024 );! ! if( bytesRead ){! String str = String(input);! str.toUpperCase();! Serial.println(str);! }! }! ! void waitForInput() {! while (Serial.available() <= 0) {! // busy loop! }! }!

  95. void setup()! {! Serial.begin(57600); // start serial port at 57600

    bps! }! ! void loop() {! waitForInput();! ! static char input[1025];! int bytesRead = Serial.readBytesUntil( '\n', input, 1024 );! ! if( bytesRead ){! String str = String(input);! str.toUpperCase();! Serial.println(str);! }! }! ! void waitForInput() {! while (Serial.available() <= 0) {! // busy loop! }! }!

  96. void setup()! {! Serial.begin(57600); // start serial port at 57600

    bps! }! ! void loop() {! waitForInput();! ! static char input[1025];! int bytesRead = Serial.readBytesUntil( '\n', input, 1024 );! ! if( bytesRead ){! String str = String(input);! str.toUpperCase();! Serial.println(str);! }! }! ! void waitForInput() {! while (Serial.available() <= 0) {! // busy loop! }! }!

  97. void setup()! {! Serial.begin(57600); // start serial port at 57600

    bps! }! ! void loop() {! waitForInput();! ! static char input[1025];! int bytesRead = Serial.readBytesUntil( '\n', input, 1024 );! ! if( bytesRead ){! String str = String(input);! str.toUpperCase();! Serial.println(str);! }! }! ! void waitForInput() {! while (Serial.available() <= 0) {! // busy loop! }! }!

  98. void setup()! {! Serial.begin(57600); // start serial port at 57600

    bps! }! ! void loop() {! waitForInput();! ! static char input[1025];! int bytesRead = Serial.readBytesUntil( '\n', input, 1024 );! ! if( bytesRead ){! String str = String(input);! str.toUpperCase();! Serial.println(str);! }! }! ! void waitForInput() {! while (Serial.available() <= 0) {! // busy loop! }! }!

  99. void setup()! {! Serial.begin(57600); // start serial port at 57600

    bps! }! ! void loop() {! waitForInput();! ! static char input[1025];! int bytesRead = Serial.readBytesUntil( '\n', input, 1024 );! ! if( bytesRead ){! String str = String(input);! str.toUpperCase();! Serial.println(str);! }! }! ! void waitForInput() {! while (Serial.available() <= 0) {! // busy loop! }! }!

  100. Raspberry PI red LED green LED blue LED PWM Arduino

    serial

  101. GPIO Pins

  102. Raspberry PI red LED green LED blue LED Arduino

  103. Raspberry PI red LED green LED blue LED Arduino “ffaa11\n”

  104. Raspberry PI red LED green LED blue LED Arduino “ffaa11\n”

  105. Raspberry PI red LED green LED blue LED Arduino “ffaa11\n”

  106. Much Learning Arduino- compatibles bareduinos LPC810 soldering! transistors protoboard fritzing

    voltage regulators node.js cctray line-level converters command-line builds C++ on Arduino usb to serial external programmers OSS hardware

  107. Resources

  108. Resources

  109. moredip/aphex (work in progress)

  110. Have FUN!

  111. Pete Hodgson @ph1 phodgson@thoughtworks.com these slides http://bit.ly/buildlightsaber