[OTA15] Back to binary !
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The document discusses how the low-bandwidth SIGFOX technology allows autonomous devices to connect to the Internet using little data. It explains that SIGFOX uses radio communication with energy-efficient transmissions of up to 12 bytes per message. Examples are given of how location, sensor readings and other data can be encoded into very short binary messages to enable many Internet of Things use cases with battery-powered devices. Developers are encouraged to attend SIGFOX Maker Tour events to learn how to use the technology and prototype connected solutions.
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![Send a message
β’ Modules are controlled through AT commands
β’ Send frame : AT$SF=[hex byte][hex byte][hex
byte]..
β’ Thatβs it !](https://image.slidesharecdn.com/20150925-overtheair-151005111140-lva1-app6892/85/OTA15-Back-to-binary-41-320.jpg)
[OTA15] Back to binary !
- 2. Back to binary ! How the low bandwith SIGFOX technology can allow truly autonomous devices to connect to the Internet Over The Air 2015
- 3. Me β’ Web development background, started in 2000 β’ Web dev turned D.CTO at lequipe.fr, french leading sports website β’ Worked 4 yrs in a startup, focused on multi- device apps, then on connected solutions only β’ Dev & Maker Evangelist @SIGFOX since 6 months
- 5. Why SIGFOX ? β’ Existing technologies were not adapted to the IoT world to come β’ Mobile networks evolution has been focused on increasing bandwidth β’ Many (most ?) IoT devices will only exchange a few informations every now and then
- 6. Sigfox Basics β’ A radio communication protocol, dedicated to the IoT β’ A global operated network β’ Low Power Wide Area β’ Main focus : energy efο¬ciency
- 7. Sigfox Basics β’ Indoor & outdoor use β’ Two-way communication. From & to the device β’ Up to 140 messages per day β’ Compliant with ETSI & FCC regulations
- 8. Out-of-the-box β’ No conο¬guration needed β’ No pairing β’ No ever-changing hub credentials to set
- 9. Energy efο¬ciency β’ ~25mA in emission, during a few seconds β’ No registration on the network, no negotiation : power on, send, power off is the default behaviour β’ 99% of the time, so-called connected objects are not connected ! β’ Idle consumption : a few Β΅A
- 10. Low bandwidth β’ Emission rates β’ Europe: 25mW / 100 bits/s β’ US : 100mW / 600 bits/s β’ 12 bytes / message
- 11. 12 bytes !?
- 12. 12 bytes is β’ 12 ASCII characters β’ Hello World barely ο¬ts
- 13. Forget bad habitudes β’ Bandwidth is not that free β’ No overhead needed β’ No need to be human eye friendly
- 14. Meaningful bits only β’ No overhead or descriptions β’ No oversize data types, tailor to your needs β’ Donβt use a 2-byte integer when range of possible values ο¬ts in 8 or 12 bits β’ Beware of longs, ο¬oats, ..
- 15. Do you really need the value ? β’ Delta maybe enough β’ Scenario from a pre established list
- 16. GPS example
- 17. St Johnβs Church, Hoxton β’ Latitude: 51Β° 31β 48,4608 N β’ Longitude: 0Β° 5β 8,6424 W
- 19. XML, honestly <?xml version="1.0"?> <pos> <lat>51Β°31β48,4608N</lat> <lng>0Β°5β8,4624W</lng> </pos> Still 94 bytes
- 20. JSON + schema.org { "latitude":"51Β°31β48,4608N", "longitude": "0Β°5β8,4624W" } 70 bytes
- 21. JSON { "lat":"51Β°31β48,4608N", "lng": "0Β°5β8,4624W" } 59 bytes, better { "lat":51.5301278, "lng": -0.0857343 } 43 bytes !
- 22. Down to binary β’ North/South : 1 bit β’ East/West : 1 bit β’ Latitude: 21 bits β’ Longitude: 24 bits
- 23. Shenanigans ? β’ True range of possible values ? β’ Clever algorithms (available online ;))
- 24. What is it good for ?
- 25. Absolutely everything ? β’ NO β’ Independent devices β’ Not that talkative
- 26. Independant ? β’ Battery-operated β’ Direct internet connection β’ No maintenance
- 27. Sexy Kickstarter Projects Boring IoT Useful
- 28. Current use cases β’ Existing solutions in various sectors β’ Metering & Utilities β’ Security β’ Tracking β’ Agriculture β’ Public services
- 30. Public equipment
- 31. Call to action β’ A button & nothing else, to trigger any pre-determined action ⒠« Mommy, Iβm home !Β Β» ⒠« Get me a cabΒ Β» β’ Repeat last order, concierge, customer supportβ¦
- 32. Agriculture β’ Environment monitoring: soil moisture, temperature, sun exposure, .. β’ Herd geolocalisation β’ Livestock health monitoring
- 33. DIY Projects β’ Recent projects β’ Connected wine cellar β’ Cat bowl scale β’ Garden hydrometry β’ β¦
- 34. When, where & how ?
- 35. When NOW
- 36. Where - Europe β’ Live Nationwide coverage β’ France, Netherlands, Spain β’ UK: ~10 cities currently β’ Rollout in progress β’ Belgium, Czech Rep, Denmark, Luxembourg, Portugal β’ A couple of nice announcements to be made in the coming weeks :)
- 37. Where - US β’ Live coverage β’ San Francisco β’ New York β’ Late 2015/Early 2016 β’ Atlanta β’ Chicago β’ Los Angeles β’ Austin - Dallas - Houston
- 38. Where - spot coverages β’ Various cities covered in Europe, Asia & Latin America β’ Bogota β’ Dublin β’ Milan β’ Munich β’ Santiago β’ Seoul β’ Warsaw
- 39. How β’ SIGFOX is not a silicon vendor β’ Standard transceivers & SoC from various enablers : Atmel, SiLabs, Texas Instruments, Axsem, Atim.. β’ Certiο¬ed modules (radio + Β΅C) from Telecom Design, Telit, Adeunis
- 40. Dev Kits β’ Dev kits available for Arduino, Raspberry Pi β’ Compatible with any platform able to use a serial communication
- 41. Send a message β’ Modules are controlled through AT commands β’ Send frame : AT$SF=[hex byte][hex byte][hex byte].. β’ Thatβs it !
- 42. Example β’ I need to send the following β’ A: a 2 byte-integer : 16 bits β’ B: a 0-32 value : 6 bits β’ C: a state, within 4 possibilities : 2 bits
- 43. Example β’ My values β’ A: 17568 β> 0100010010100000 β’ B: 17 β> 010001 β’ C : state #3 β> 10 β’ Frame : 01000100 10100000 01000110 β’ AT$SF=44 A0 46
- 44. Data handling β’ Yours β’ 3 ways to access them β’ Web interface β’ REST API (pull) β’ HTTPS Callbacks (push)
- 45. Quick Demo « It worked perfectly an hour ago »
- 46. Quick Demo RFID demo live server is here : http://bit.ly/ota-rο¬d-demo (+ links to source code)
- 47. Try by yourself ? ⒠We just launched a « Maker Tour », half-day events around our technology. ⒠Get to know how to use SIGFOX, get a dev kit, start prototyping, and come home with new hardware & new projects ideas :) ⒠Details & registration : makers.sigfox.com/tour
- 48. Nicolas Lesconnec Developer & Maker Evangelist nicolas.lesconnec@sigfox.com http://makers.sigfox.com Twitter: @nlesconnec Github: @nicolsc