aframe-webthing-20190710

#FullStackCon 2019 1 http://purl.org/aframe-webthing
Philippe Coval
Fabien Benetou
Merging Realities
Using the Web to Bring the Internet of
Things to High End Augmented Reality
FullStack Conference
#FullStackCon, London UK <2019-07-10>

$ who are we ?
●
Philippe Coval <https://social.samsunginter.net/@rzr>
– Software engineer for Samsung Open Source Group
– Interest: Web of Things with “Privacy by Design”
●
Fabien Benetou <https://twitter.com/@utopiah>
– WebXR developer consulting for the European Parliament / UNICEF
– Mozilla Tech Speaker
●
Met In 2019 at FOSDEM and mutual inspiration
– Check @MozHacks

Agenda
1) AR and VR on the web
2) WebThings
3) Binding WebThings and XR

Samsung Open Source Group 4 https://fosdem.org/2018/schedule/event/tizen_rt/
“Simplicity
is the ultimate sophistication.”
~Leonardo da Vinci

From HTML to 2D

From 2D to 3D

Making space : coordinate systems

From a browser view to an immersive world

Always on the web

A view from nowhere?

Turning heads

Position but also rotation

Pose to move in space

Tracking : outside-in

Tracking : Inside-out

Interacting with objects

Beyond primitives : what's a mesh

Beyond static object : components

WebXR examples, AR focus

WebXR examples, VR focus

21
https://social.samsunginter.net/@rzrSamsung Open Source Group

Web of Thing aka WoT
●
W3C working group
– Standardization
●
Interaction with devices
– using Web technologies:
●
JSON, RESTful,
●
HTTP, WebSockets, CoAP…
●
Things description
– JSON-TD / JSON-LD
– Semantics: (iot.schema.org)
Simplified Thing Description
{
"name":"Switch",
"id":"urn:dev:wot:…:switch",
"base":"https://…/switch",
"properties": {
"on": {
"type":"boolean",
// ...
"href":"/on"
}
}
// …
"actions": // …
"events": // …
}…

Samsung Open Source Group 23 https://social.samsunginter.net/@rzr
Mozilla WebThing project
●
FLOSS Platform for IoT
– using Web
– with Privacy By Design
●
WebThing API and Schemas
– Can be implemented
– using native (C/C++), Python,
– JS (node.js or IoT.js)
●
Things gateway
– to connect, control (UI)
– and automate webthings
G
D
P
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G
D
PR
A
rt. 25
A
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25

Samsung Open Source Group 24 https://social.samsunginter.net/@rzr
Javascript the language of Web (of Twins)
●
IoT.js: an alternative runtime inspired by Node.js:
– Powered by JerryScript engine designed for micro-controllers
– Feature: Networking (HTTP, MQTT...) & IO (I2C, GPIO, ADC, PWM)
●
Things can be build using webthing-iotjs module:
– Standalone HTTP servers exposing Mozilla Things API:
●
RESTful architecture: read, update operations
– Devices can be connected to MozIoT webthing gateway
●
ACL (JWT), Remote access using pkgkite tunneling
– Or Web services (OpenData, Social Media etc)

“The secret to getting ahead
is getting started.”
~Mark Twain

Example: A Robotic arm idea
●
From concept:
– Top level properties: Angles:
●
Torso [-180, +180]
●
Shoulder [0, +90]
●
Arm [0, +90]
●
Hand [0, +45]
●
To early specifications:
– Design Model CAD→ VR/AR
●
Simulation
●
→ Identify integration issues:
– (Location, constraints)
– Implement embedded system
●
Sourcing hardware
●
Controller / Controllee
●
Adjust and iterate
– Thing description+API stay up

WebThing to XR Integration
●
A-Frame components can be accessed from DOM API
●
So attributes can be updated from JS
– Bind Webthing from URL
●
Using HTTP polling (and/or WebSockets if supported)
– If shared through gateway (server):
●
Set URL + JWT token to requests (client app)
– authorization issued from WebUI (devel menu)
●
It works both way:
– Sensors: (Real to XR) & Actuators (XR to Real)
●
https://www.npmjs.com/package/aframe-webthing

“Any sufficiently
advanced technology
is indistinguishable
from magic.”
~ Arthur C. Clarke

Digital Twins with WebThing-IoTjs (on STM32)
https://youtu.be/sUayRsjV1Ys

Live control in 3D using A-Frame on GearVR:
https://youtu.be/s3r8pQtzhAU#wotxr-20190320rzr

Lets build the Web of Twins ?
●
Digital twins
– Introduced by Dr M. Grieves
(2002)
●
Real time (or deferred) connectivity:
– Between the physical component
●
and its digital counterpart
●
“Devices as service” concept:
●
Applies to many industries:
– City, manufacturing, health,
transport…
●
Useful for:
– Re/Co/Design
– Monitoring, Quality tracking
– Impact analysis:
●
Dependency, process,
lifecycle, financial...
– Digital traces for analytic
– Simulation, AI/ML etc
– Improve decision making

Contributors welcome !
●
Open Source:
– https://github.com/rzr/aframe-webthing
– https://github.com/rzr/twins
– https://github.com/rzr/webthing-iotjs/wiki
– https://github.com/SamsungInternet/color-sensor-js
●
Infos:
– https://social.samsunginter.net/@rzr/102139995659879619
– https://hacks.mozilla.org/2019/03/connecting-real-things-to-virtual-worlds-using-web/
– https://skillsmatter.com/conferences/11213-fullstack-london-2019-the-conference-on-javascript-node-and-internet-of-things#program

Community rules @ #FullStackCon

Summary
●
3D in browser has never been so easy
– Using A-frame framework supported by browsers and devices
●
Ready for JavaScript developers
– Develop for low end microcontrollers using IoT.js
– And support WebThing API to be interacted from the web
●
Direct or connected to gateway (shared securely to apps)
●
Let’s develop the Web of Twins:
– built on FLOSS tools with privacy by design

Summary
1) AR and VR on the web ✓

Summary
2) WebThings connectivity ✓

Summary
2) WebThings connectivity ✓
3) Binding WebThings and XR ✓

39
Q&A ?
(or Extras?)
Ask now or online:
●
https://social.samsunginter.net/@rzr
●
https://twitter.com/@utopiah

40
Thanks !
Resources:
Flaticons CC,
PixBay.com
https://Social.SamsungInter.net/@rzr
https://twitter.com/@utopiah

aframe-webthing-20190710

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