SHA2017 - Coffee Machines && JavaScript - Intro to Nodebots

These are the slides for a workshop given at SHA 2017

Transcript

1. Coffee Machines && JS Intro Workshop to Nodebots Dominik Kundel | @dkundel | #sha2017 #coffeejs
2. HI! ! I'm Dominik! ! Dominik Kundel | @dkundel | #sha2017 #coffeejs
3. About me Developer Evangelist at Get in touch with me! ! @dkundel " dkundel@twilio.com # github/dkundel Dominik Kundel | @dkundel | #sha2017 #coffeejs
4. How I hacked my ☕ Machine Dominik Kundel | @dkundel | #sha2017 #coffeejs
5. Dominik Kundel | @dkundel | #sha2017 #coffeejs
6. Dominik Kundel | @dkundel | #sha2017 #coffeejs
7. Dominik Kundel | @dkundel | #sha2017 #coffeejs
8. Why? Dominik Kundel | @dkundel | #sha2017 #coffeejs
9. 1. It's interes,ng Dominik Kundel | @dkundel | #sha2017 #coffeejs
10. 2. "Alexa, make me a coffee" Dominik Kundel | @dkundel | #sha2017 #coffeejs
11. 3. API all the things! Dominik Kundel | @dkundel | #sha2017 #coffeejs
12. Why JS? Dominik Kundel | @dkundel | #sha2017 #coffeejs
13. Why JS? 1. The last +me I wrote C++ was in university 2. I know JavaScript well which makes coding faster 3. Wri+ng a web server is easy 4. It's more challenging 5. Hardware === eventDriven && JS === eventDriven Dominik Kundel | @dkundel | #sha2017 #coffeejs
14. Op#ons? Dominik Kundel | @dkundel | #sha2017 #coffeejs
15. Op#on 1: Espruino www.espruino.com Dominik Kundel | @dkundel | #sha2017 #coffeejs
16. Op#on 1: Espruino Dominik Kundel | @dkundel | #sha2017 #coffeejs
17. Op#on 2: Tessel tessel.io Dominik Kundel | @dkundel | #sha2017 #coffeejs
18. Op#on 2: Tessel Dominik Kundel | @dkundel | #sha2017 #coffeejs
19. Dominik Kundel | @dkundel | #sha2017 #coffeejs
20. Op#on 3: Johnny-Five johnny-five.io Dominik Kundel | @dkundel | #sha2017 #coffeejs
21. Op#on 3: Johnny-Five Dominik Kundel | @dkundel | #sha2017 #coffeejs
22. Dominik Kundel | @dkundel | #sha2017 #coffeejs
23. Dominik Kundel | @dkundel | #sha2017 #coffeejs
24. How? Dominik Kundel | @dkundel | #sha2017 #coffeejs
25. Disclaimer Dominik Kundel | @dkundel | #sha2017 #coffeejs
26. Dominik Kundel | @dkundel | #sha2017 #coffeejs
27. Dominik Kundel | @dkundel | #sha2017 #coffeejs
28. Dominik Kundel | @dkundel | #sha2017 #coffeejs
29. Dominik Kundel | @dkundel | #sha2017 #coffeejs
30. Dominik Kundel | @dkundel | #sha2017 #coffeejs
31. Dominik Kundel | @dkundel | #sha2017 #coffeejs
32. What We Knew • 8 cables/pins • 6 switches • 7 LEDs Dominik Kundel | @dkundel | #sha2017 #coffeejs
33. Assump&ons 1. One cable is ⚡ 2. We need at least 3 pins + power controlling the " 3. We need at least 3 pins + power controlling the # 4. What is the 8th cable for? Dominik Kundel | @dkundel | #sha2017 #coffeejs
34. The Naive Approach const five = require('johnny-five'); const Tessel = require('tessel-io'); const board = new five.Board({ io: new Tessel() }); board.on('ready', () => { const p1 = new five.Pin({ pin: 'b0', mode: 2 }); //... const p8 = new five.Pin({ pin: 'b7', mode: 2 }); const pins = [p1, /* ... */, p8]; board.repl.inject({ pins: pins }); }); Dominik Kundel | @dkundel | #sha2017 #coffeejs
35. The Naive Approach II const five = require('johnny-five'); const Tessel = require('tessel-io'); const board = new five.Board({ io: new Tessel() }); board.on('ready', () => { const p2 = new five.Pin({ pin: 'b1' /*, mode: 2 */ }); //... const p8 = new five.Pin({ pin: 'b7'/*, mode: 2 */ }); const pins = [p2, /* ... */, p8]; board.repl.inject({ pins: pins }); }); Dominik Kundel | @dkundel | #sha2017 #coffeejs
36. Bu#ons? How About Bu#ons! board.on('ready', () => { // PIN declaration ... const b2 = new five.Button('b1'); const b3 = new five.Button('b2'); const b7 = new five.Button('b6'); const b8 = new five.Button('b7'); const buttons = [b2, b3, b7, b8]; buttons.forEach(btn => { btn.on('press', () => console.log('Pressed button no.%d', btn.pin)); btn.on('release', () => console.log('Released button no.%d', btn.pin)); }); }); Dominik Kundel | @dkundel | #sha2017 #coffeejs
37. Dominik Kundel | @dkundel | #sha2017 #coffeejs
38. Dominik Kundel | @dkundel | #sha2017 #coffeejs
39. Dominik Kundel | @dkundel | #sha2017 #coffeejs
40. We Are On To Something ! • Pin 1 is ⚡ (turns on LED4, LED5, LED7) • Pin 4-6 can turn off " LED4, " LED5, " LED7 • Pin 7-8 react on # • Pin 2 can manipulate # S3 && # S4 • Pin 3 can manipulate # S1 && # S2 Dominik Kundel | @dkundel | #sha2017 #coffeejs
41. Back To The Drawing Board Dominik Kundel | @dkundel | #sha2017 #coffeejs
42. Dominik Kundel | @dkundel | #sha2017 #coffeejs
43. To The Rescue! Dominik Kundel | @dkundel | #sha2017 #coffeejs
44. Dominik Kundel | @dkundel | #sha2017 #coffeejs
45. Dominik Kundel | @dkundel | #sha2017 #coffeejs
46. ! Progress! ! Pin 1-3 === ⚡ Pin 4-6 === ! Pin 7-8 === !??? Dominik Kundel | @dkundel | #sha2017 #coffeejs
47. Diodes! Dominik Kundel | @dkundel | #sha2017 #coffeejs
48. Dominik Kundel | @dkundel | #sha2017 #coffeejs
49. It All Makes Sense! ! S1 = P3 ➡ P7 ! S2 = P3 ➡ P8 ! S3 = P2 ➡ P7 ! S4 = P2 ➡ P8 ! S5 = P1 ➡ P7 ! S6 = P1 ➡ P8 " LED7 (Power) = P1 ➡ P6 Dominik Kundel | @dkundel | #sha2017 #coffeejs
50. Dominik Kundel | @dkundel | #sha2017 #coffeejs
51. Dominik Kundel | @dkundel | #sha2017 #coffeejs
52. const espresso = new five.Relay({ pin: 'a4', type: 'NO' }); const grande = new five.Relay({ pin: 'a5', type: 'NO' }); const power = new five.Relay({ pin: 'a6', type: 'NO' }); espresso.close(); grande.close(); power.close(); board.repl.inject({ espresso, grande, power }); Dominik Kundel | @dkundel | #sha2017 #coffeejs
53. Dominik Kundel | @dkundel | #sha2017 #coffeejs
54. Dominik Kundel | @dkundel | #sha2017 #coffeejs
55. IoT Coffee Machine? Dominik Kundel | @dkundel | #sha2017 #coffeejs
56. 418 - I'm a teapot Dominik Kundel | @dkundel | #sha2017 #coffeejs
57. IETF RFC 2324 HTCPCP Dominik Kundel | @dkundel | #sha2017 #coffeejs
58. Hyper Text Coffee Pot Control Protocol Dominik Kundel | @dkundel | #sha2017 #coffeejs
59. Hyper Text Coffee Pot Control Protocol • Built on top of HTTP • Adds BREW method • Safe and Accept-Additions Headers • HTTP code 418 • coffee:// URI scheme • many more things Dominik Kundel | @dkundel | #sha2017 #coffeejs
60. Dominik Kundel | @dkundel | #sha2017 #coffeejs
61. Dominik Kundel | @dkundel | #sha2017 #coffeejs
62. ! It's Alive!! ! Dominik Kundel | @dkundel | #sha2017 #coffeejs
63. ! github.com/dkundel/htcpcp-delonghi Dominik Kundel | @dkundel | #sha2017 #coffeejs
64. Dominik Kundel | @dkundel | #sha2017 #coffeejs
65. ! github.com/dkundel/nodebots-workshop Dominik Kundel | @dkundel | #sha2017 #coffeejs
66. What I learned: Dominik Kundel | @dkundel | #sha2017 #coffeejs
67. ! Reverse-engineering is a lot of fun Dominik Kundel | @dkundel | #sha2017 #coffeejs
68. ! Reverse-engineering is frustra/ng Dominik Kundel | @dkundel | #sha2017 #coffeejs
69. JS ❤ Hardware Dominik Kundel | @dkundel | #sha2017 #coffeejs
70. ! Tessel 2 is great! Dominik Kundel | @dkundel | #sha2017 #coffeejs
71. ! Johnny-Five is super useful! Dominik Kundel | @dkundel | #sha2017 #coffeejs
72. What's Next? ! • Programma(cally determine state • Add more relays • Sugges(ons??? Dominik Kundel | @dkundel | #sha2017 #coffeejs
73. ! bit.ly/coffee-js Dominik Kundel | @dkundel | #sha2017 #coffeejs
74. ! bit.ly/sha2017-nodebots Dominik Kundel | @dkundel | #sha2017 #coffeejs
75. Any Ques)ons? Get in touch with me! ! Dominik Kundel " @dkundel # dkundel@twilio.com $ github/dkundel Dominik Kundel | @dkundel | #sha2017 #coffeejs