Things need apps to manage them, which Flutter is great for, providing an easy way to build cross platform support. But things also need to get their data (securely and privately) to their apps, and Dart can be used for that. This presentation will walk through a use case demonstrated at Mobile World Congress (and now open sourced) that uses Dart to read sensor data through to Flutter for user presentation.

1. © 2022 - Atsign | atsign.dev
End to End IoT with Dart and Flutter
Flutter Vikings - August 2022

2. © 2022 - Atsign | atsign.dev
A brief introduction
Engineer, Atsign & Dart GDE
building a platform that puts people in
control of their data.
Co-host, Tech Debt Burndown Podcast
Cloud Editor, InfoQ
Blogger blog.thestateofme.com
chris.swanz.net for links to socials etc.
@cpswan

3. © 2022 - Atsign | atsign.dev
Agenda
➔ Overview of Mobile World Congress Demo
➔ The Flutter front end
➔ A Dart device driver
➔ Connectivity, Security, Privacy
➔ Local Display
➔ Review

4. Overview of Mobile World Congress
Demo

6. All the code is open source
https://github.com/atsign-foundation/mwc_demo

7. Flutter Front End

8. Sign in (Windows Desktop)

9. Main screen (Windows Desktop)

10. And Android
https://play.google.com/store/apps/details?id=com.atsign.hro2

11. And iOS
https://apps.apple.com/gb/app/hro2/id1610811005

12. Dart Device Driver

13. MAX30100 sensor - heart rate and O2 saturation
https://datasheets.maximintegrated.com/en/ds/MAX30100.pdf

14. The programmer’s lament
“We do these things,
not because they are easy,
but because we thought they would be easy”

15. Newer sensor - better drivers?
https://shop.pimoroni.com/products/max30101-breakout-heart-rate-oximeter-smoke-sensor

16. C++ (and bits of Python) driver ported to Dart
https://pub.dev/packages/max30101

17. We stand on the shoulders of giants
https://pub.dev/packages/dart_periphery

18. C++ code is EXCEPTIONALLY well documented
https://morf.lv/implementing-pulse-oximeter-using-max30100

19. Connectivity, Security, Privacy

20. End to end encrypted

21. Where do the keys go?
Keys by Jay Gooby (CC BY 2.0)

22. Wired, WiFi and/or Cellular?

23. Admin access - Ssh! No ports
https://github.com/atsign-foundation/sshnoports

24. Local display
(the bit we didn’t use Dart for)

25. PiTFT HAT presents as a framebuffer device

26. © 2022 - Atsign | atsign.dev
Review
➔ Overview of Mobile World Congress Demo
➔ The Flutter front end
➔ A Dart device driver
➔ Connectivity, Security, Privacy
➔ Local Display

27. Takk skal du ha!
chris@atsign.com
@cpswan

28. © 2022 : Atsign | atsign.dev
Get started with the atPlatform
https://atsign.dev/
Join our community
https://github.com/atsign-foundation
@atsigncompany
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29. Questions?
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