BayNode Meetup June 2014

Transcript

1. Embedded JavaScript: The skills you have in 2014 will be all you need to make physical devices Tim Ryan, Co-Founder / Developer Technical Machine
3. Tessel is a WiFi-enabled microcontroller that runs JavaScript. Tim Ryan, Co-Founder / Software Developer Technical Machine
5. Embedded JavaScript
11. High-level != Developer-friendly
12. Open Source Hardware
16. 2005 2014
17. 2005 2003 2005
18. 2005 2003 2005
19. ~2010
20. Microcontrollers
22. 8-bit 32-bit
23. We can today afford the processing power to make developers’ lives easier.
24. $4 @1K $11 @1K
27. Why JavaScript?
28. JavaScript (and asynchronous coding) is the perfect embedded language!
29. JavaScript (and asynchronous coding) is the perfect embedded language! —Sylvia Plath
30. Ethernet TCP HTTP
31. Ethernet TCP HTTP (Packet-based) (Stream-based) (Packet-based)
32. Ethernet TCP HTTP Websockets (Packet-based) (Stream-based) (Packet-based) (Streaming…)
38. def receive_packet(): buf = sock.recv() return buf while True: print(receive_packet())
39. Future<byte[]> p = pool.submit(new Callable<byte[]>() { public byte[] call() { return socket.recv(); } } // ... while waiting ... p.get();
40. socket.on(‘data’, function (data) { // handle data buffer }); // ... other code ...
41. Inventing the Universe
43. • Chrome’s JS engine • C++ • ~10mb memory required for each instance • POSIX/Win32 environment
44. • Embeddable language • Written in C • ~30kb memory • Highly portable
45. • Embeddable language • Written in C • ~30kb memory • Highly portable • 10x-100x slower
46. JS VM HTTP Parsing DNS SSL Memory management Filesystem Tar JSON Unicode TCP/IP
47. JS VM HTTP Parsing DNS SSL Memory management Filesystem Tar JSON Unicode TCP/IP tessel/colony wecing/utf8proc lloyd/yajl bagder/c-ares dsheets/axtls joyent/http-parser abbrev/fatfs colorer/dlmalloc
48. Lesson Learned: When reinventing everything, reuse as much as possible.
51. What Comes Next
52. It’s becoming feasible to embed in every product a microcontroller powerful enough to run a high level language.
53. HTTP
54. HTTP SPI I2C UART
57. http://github.com/tessel/firmware http://github.com/tessel/runtime
59. Be bold! Be courageous! Be amazing!
60. Be bold! Be courageous! Be amazing! Build robots!
61. Be bold! Be courageous! Be amazing! Build robots! — Sylvia Plath
62. tim@technical.io @technicalhumans http://tessel.io