Philippe Coval is a software engineer working on open source projects around Web of Things and virtual reality. He is exploring blending IoT and extended reality by connecting physical devices to virtual worlds. He discusses the A-Frame and WebThings frameworks for building VR/AR experiences and programming internet-connected devices. Coval demonstrates how to implement a WebThing and control a servo motor from a VR scene using these technologies.
Merging Realities
Using the Web to Bring the Internet of Things to High End Augmented Reality
FullStack Conference
#FullStackCon, London UK <2019-07-10>
Philippe Coval
Fabien Benetou
URL: http://purl.org/aframe-webthing
Build "Privacy by design" Webthings
With IoT.js on TizenRT and more
#MozFest, Privacy and Security track
Ravensbourne University, London UK <2018-10-27>
https://social.samsunginter.net/web/statuses/101091908485239453# #Cdl2018 : #WebThing using #WebThingIotJs on #TizenRT on #ARTIK05x connected to @MozillaIot featuring @The_Jst #JerryScript + #IotJs , video to be published by @CapitoleDuLibre
webthing-iotjs-tizenrt-cdl2018-20181117rzr
The complex IoT equation, and FLOSS solutions, OW2con'18, June 7-8, 2018, ParisOW2
Even if not totally new, IoT era is bringing many new challenges to address but at a larger scale.
Market oracles are publishing various figures about the expected gross,
while security experts are alarming about their concerns.
Software developers will use as much resources they can, while hardware engineers will focus on optimizing hardware for reducing cost of production or usage by focusing on power consumption.
IoT is involving many subdomains from electronics to radio communication or cloud backends, and thus many skills than nobody can seriously claim to have.
The good news is that nobody is alone in the world of open standards and free software,
and cooperation is one of the key for a seamless "INTERnet of things" where everyone can find a place in this new landscape.
To illustrate openness and interoperability, a couple of projects supported by Samsung Opensource group will be presented and how to get kickstarted on Web+IoT Technologies.
Merging Realities
Using the Web to Bring the Internet of Things to High End Augmented Reality
FullStack Conference
#FullStackCon, London UK <2019-07-10>
Philippe Coval
Fabien Benetou
URL: http://purl.org/aframe-webthing
Build "Privacy by design" Webthings
With IoT.js on TizenRT and more
#MozFest, Privacy and Security track
Ravensbourne University, London UK <2018-10-27>
https://social.samsunginter.net/web/statuses/101091908485239453# #Cdl2018 : #WebThing using #WebThingIotJs on #TizenRT on #ARTIK05x connected to @MozillaIot featuring @The_Jst #JerryScript + #IotJs , video to be published by @CapitoleDuLibre
webthing-iotjs-tizenrt-cdl2018-20181117rzr
The complex IoT equation, and FLOSS solutions, OW2con'18, June 7-8, 2018, ParisOW2
Even if not totally new, IoT era is bringing many new challenges to address but at a larger scale.
Market oracles are publishing various figures about the expected gross,
while security experts are alarming about their concerns.
Software developers will use as much resources they can, while hardware engineers will focus on optimizing hardware for reducing cost of production or usage by focusing on power consumption.
IoT is involving many subdomains from electronics to radio communication or cloud backends, and thus many skills than nobody can seriously claim to have.
The good news is that nobody is alone in the world of open standards and free software,
and cooperation is one of the key for a seamless "INTERnet of things" where everyone can find a place in this new landscape.
To illustrate openness and interoperability, a couple of projects supported by Samsung Opensource group will be presented and how to get kickstarted on Web+IoT Technologies.
RetailFuse.io 2020 Presentation Outlining IoT use cases for Retail applications as well as a deeper look into LoRaWAN as a communication technology to 'bet big' on.
IoT with Ruby/mruby - RubyWorld Conference 2015哲也 廣田
In the Japan OSS Promotion Forum, studied IoT with Ruby/mruby from last year(2014), and developed the sample. This time, will present last year's result, technical challenges, and this year's(2015) activities.
Netflix Open Source: Building a Distributed and Automated Open Source Programaspyker
Netflix has been using and contributing to open source for several years. Over the years, Netflix has released over one hundred Netflix Open Source (aka NetflixOSS) libraries, servers, and technologies. Netflix engineers benefit by accepting contributions and gathering feedback with key collaborators around the world. Users of NetflixOSS from many industries benefit from our solutions including Big Data, Build and Delivery Tools, Runtime Services and Libraries, Data Persistence, Insight, Reliability and Performance, Security and User Interface. With such a large and mature open source program, Netflix has worked on approaches and tools that help manage and improve the NetflixOSS source offerings and communities. Netflix has taken a different approach to building support for open source as compared to other Internet scale companies. Come to this session to learn about the unique approaches Netflix has taken to both distribute and automate the responsibilities of building a world-class open source program.
Building a Distributed & Automated Open Source Program at NetflixAll Things Open
Andrew Spyker
Senior Software Engineer for Netflix
Find more by Andrew Spyker: http://www.slideshare.net/aspyker
All Things Open
October 26-27, 2016
Raleigh, North Carolina
RetailFuse.io 2020 Presentation Outlining IoT use cases for Retail applications as well as a deeper look into LoRaWAN as a communication technology to 'bet big' on.
IoT with Ruby/mruby - RubyWorld Conference 2015哲也 廣田
In the Japan OSS Promotion Forum, studied IoT with Ruby/mruby from last year(2014), and developed the sample. This time, will present last year's result, technical challenges, and this year's(2015) activities.
Netflix Open Source: Building a Distributed and Automated Open Source Programaspyker
Netflix has been using and contributing to open source for several years. Over the years, Netflix has released over one hundred Netflix Open Source (aka NetflixOSS) libraries, servers, and technologies. Netflix engineers benefit by accepting contributions and gathering feedback with key collaborators around the world. Users of NetflixOSS from many industries benefit from our solutions including Big Data, Build and Delivery Tools, Runtime Services and Libraries, Data Persistence, Insight, Reliability and Performance, Security and User Interface. With such a large and mature open source program, Netflix has worked on approaches and tools that help manage and improve the NetflixOSS source offerings and communities. Netflix has taken a different approach to building support for open source as compared to other Internet scale companies. Come to this session to learn about the unique approaches Netflix has taken to both distribute and automate the responsibilities of building a world-class open source program.
Building a Distributed & Automated Open Source Program at NetflixAll Things Open
Andrew Spyker
Senior Software Engineer for Netflix
Find more by Andrew Spyker: http://www.slideshare.net/aspyker
All Things Open
October 26-27, 2016
Raleigh, North Carolina
Tizen:Common is a cross profile and cross architecture system that
aims to become the OS of everything. This presentation will discuss
its porting to open source hardware devices with ARM or Intel
processors and the stage of the open source project Tizen-sunxi. It
will provide guidelines for building Tizen:Common image from scratch
and booting it on x86 systems or ARM devices. Sunxi devices which
represent the family of ARM SoCs from the Chinese company Allwinner
Technology will be used to demonstrate how to build tizen by your own
and dual boot it on a tablet shipped with another OS. Allwinner chips
are preferred for low budget tablets and single board computers such
as open hardware OLinuXino, CubieBoard and Banana Pi. As of today
millions of Sunxi devices exist on the market and a large community of
open source developers support them but they are not the only ones to
hack on.
Since Tizen adopted "open governance model", a free and libre open
source GNU/Linux distribution known as "Tizen:Common" came to light.
Now anyone is able to install it on widely available machines (PC,
NUC, VM etc) and use the rolling release distro for any purpose, let's
go one step foreward and build software for it and make a basic bug
fix. This kick-start session aims to go directly to the pratical way
to use it or/and contribute to Tizen. Tizen development tools (git,
gbs, gerrit, jira...) will be presented live in real action, to give a
short overview on how the project is progressing on a daily basis.
Curious developers unfamiliar with platform development, can expect to
get the entry's keys and learn by example on how to work on tizen
platform and eventually share their wildest dreams.
https://www.tizen.org/events/tizen-developer-conference/2014/tizencommon-new-development-profile-tizen-3
Tizen:Common: a new development profile for Tizen 3
Tizen:Common provides a common development/build/test environment for Tizen 3. With the coming multiplication of verticals, creating a Common build base was becoming critical. All profiles will inherit from Tizen:Common and add their profile-specific features.
This talk will focus on the following topics:
* Tizen:Common architecture
* New features coming in Tizen:Common (Tizen 3): Multiuser, Wayland, 64 bits, Crosswalk, Buxton, SMACK, 3D UI
* Development, build, test workflow (OBS, GBS)
* Images availability
* Hardware reference targets
* Use cases: development, integration, QA
Year:
2014
Track:
Platform development
Presenter(s):
Stéphane Desneux, EUROGICIEL
Location:
Continental 5
Scheduled Time:
Tuesday, 3 June 2014 - 12:15pm to 12:55pm
Cooperating with upstream projects Packaging tips and tricks
https://wiki.tizen.org/wiki/User:Pcoval
https://dockr.eurogiciel.fr/blogs/embedded/back-from-tdcsf14/
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
To Graph or Not to Graph Knowledge Graph Architectures and LLMs
digital-twins-webthings-iotjs-20190512rzr
1. Samsung Open Source Group
1
https://social.samsunginter.net/@rzr
WebThings in VR
…towards ”DigitalTwins”
#GrafikLabor, Rennes, France <2019-05-12>
https://afgral.org/grafiklabor-2019
Philippe Coval
Samsung Open Source Group / SRUK
pcoval@samsung.com
2. Samsung Open Source Group
2
https://social.samsunginter.net/@rzr
$ who is Philippe Coval
●
Software engineer for Samsung OSG
– Belongs to SRUK team, based in Rennes, France
– Interest: Web of Things with “Privacy by Design”
●
Some past 3D experiences (OpenGL, VRML, ArtoolKit+, etc)
●
After FOSDEM 2019, I was inspired to blend IoT and XR
●
Join the fediverse: https://social.samsunginter.net/@rzr
3. Samsung Open Source Group
3
https://social.samsunginter.net/@rzr
Immersive Web
4. Samsung Open Source Group
4
https://social.samsunginter.net/@rzr
Immersive Web
●
A successful evolution: 3D, VR, AR, XR
– HTML5, WebGL, Three.js, WebVR, OpenVR, OpenXR and WebXR !
●
Several FLOSS frameworks:
– Three.js: High-level library on top on WebGL with WebVR support (for devices)
– A-Frame: Originally from Mozilla, HTML for VR (built on Three.js)
– Babylon.js: from MS and more ...
●
Support: most desktop Web Browsers and VR browsers (for headsets)
– I use GearVR2017 (with controller)
●
Runs SamungInternet for VR (chromium based)
5. Samsung Open Source Group
5
https://social.samsunginter.net/@rzr
A-Frame’s static scene in DOM
<script src="https://aframe.io/releases/0.9.0/aframe.min.js">
</script>
<a-scene>
<a-box
color='blue' rotation="0 42 0">
</a-box>
<a-camera position="1 1 3">
</a-camera>
</a-scene>
6. Samsung Open Source Group
6
https://social.samsunginter.net/@rzr
A-Frame’s static scene in DOM
<script src="https://aframe.io/releases/0.9.0/aframe.min.js">
</script>
<a-scene>
<a-box id='foo’
color='blue' rotation="0 42 0">
</a-box>
<a-camera position="1 1 3">
</a-camera>
</a-scene>
<script>
var el = document.getElementById("foo");
el.setAttribute("color", "red"); // via DOM API
el.object3D.rotateY(43); // via Three.js API
</script>
9. Samsung Open Source Group
9
https://social.samsunginter.net/@rzr
Mozilla WebThing Project
●
An open platform for monitoring and controlling devices over the web.
– With “Privacy by Design” (data stay home)
●
Inspired by Web of Things works (Web Tech for IoT)
– RESTful API, Schema, Data model (JSON)
– Proposed to W3C
●
Implemented in Mozilla’s WebThings gateway
– To connect and connect webthings with “Privacy by Design” (data stay home)
– To be controlled from Web UI
10. Samsung Open Source Group
10
https://social.samsunginter.net/@rzr
Webthings are standalone HTTP servers
●
Exposing Mozilla Things API (REST, JSON)
– Self described using Things schema
●
by properties which contains values:
– Example: a MotorThing has an AngleProperty of value 42
●
Can be implemented for many runtimes (C, Python, Java, JS…):
– Physical objects
●
Internet access is not required (uses home network/LAN)
– Or services? can be deployed anywhere
●
on gateway as adapters: privacy matters!
●
on cloud as micro services?
– Eg: for development purpose try glitch.com
11. Samsung Open Source Group
11
https://social.samsunginter.net/@rzr
Angle/Motor example simulator
●
curl https://rzr-webthing-example.glitch.me/
{"name":"Angle" …
"properties":{"angle":{"title":"Angle","type":"number"…
"links":[{"rel":"property","href":"/properties/angle"…
●
curl https://rzr-webthing-example.glitch.me/properties
{"angle":0}
●
curl -X PUT -d '{"angle": 42}' https://rzr-webthing-example.glitch.me/properties/angle
{"angle": 42}
12. Samsung Open Source Group
12
https://social.samsunginter.net/@rzr
●
var webthing = require('webthing-iotjs');
●
function AngleProperty(thing){
webthing.Property.call(this, thing, 'angle',
new webthing.Value(0), { type: 'number' });
}
●
var thing = new webthing.Thing('Motor');
thing.addProperty(new AngleProperty(thing));
●
var server = new webthing.WebThingServer(new webthing.SingleThing(thing),
8888);
●
server.start();
Implementing a WebThing Actuator
13. Samsung Open Source Group
13
https://social.samsunginter.net/@rzr
Deploy to micro controllers using IoT.js
●
IoT.js an alternative runtime inspired by Node.js:
– Powered by JerryScript engine optimized for micro-controllers
– Supporting JS modules: mastodon-lite, generic-sensors-lite
●
WebThings can be built using webthing-iotjs module:
– Supporting IoT.js runtime:
●
OS: RT, NuttX, GNU/Linux …
●
MCU: ARTIK05X, STM32*
– Or use Node.js runtime:
●
for development/simulation (glitch)
– Note: webthing-iotjs is based on webthing-node
14. Samsung Open Source Group
14
https://social.samsunginter.net/@rzr
●
SG90: 9g Micro Servo
– Angle: [-90°, +90°]
– I/O:
●
Power: 4.8V, GND
●
PWM Signal
Servo motors and PWM
●
Pulse Width Modulation (PWM):
– Constant frequency: 1/.02
– Variable duty cycle:
●
[1 ms = -90°, 2 ms = +90°]
●
(angle + 90 / 180) + 1
SG90
15. Samsung Open Source Group
15
https://social.samsunginter.net/@rzr
●
Nucleo-F767ZI
– Nucleo-144 I/O
●
32.768 Khz
●
Ethernet
●
4 PWMs *
– STM32F7
●
ARM Cortex M7
●
RAM: 320KB
●
Supporting
– NuttX
●
* nuttx-7.29-115-gf06a2cabb5+
●
Origin of TizenRT
– TizenRT possible
– Arduino API
Micro Controller
PWM1.CH1_1 @PA8
(CN12: 12th
from top on right)
PWM2.CH1_1 @PA0
(CN10: 3th
from bottom on left)
PWM3.CH1_1 @PA6
(CN7: 6th
from top on right)
GND
PWM4.CH1_1 @PB6
(CN12: 9th
from top on left)
16. Samsung Open Source Group
16
https://social.samsunginter.net/@rzr
Generating a PWM using IoT.js
●
Example:
●
Note: dutyCycle [0, 1] adapt Row 1 Row 2 Row 3 Row 4
0
2
4
6
8
10
12
Column 1
Column 2
Column 3
var pwm = require('pwm');
var config =
{ pin: 0,
period: 20,
dutyCycle: 0.5}
var port = pwm.open(config,
function(err) {
port.setDutyCycle(0.42);
});
17. Samsung Open Source Group
17
https://social.samsunginter.net/@rzr
From webthings…
to “Digital Twins”
18. Samsung Open Source Group
18
https://social.samsunginter.net/@rzr
Updating XR view from webthing
●
function update(id, type, url) {
fetch(url)
.then( response => { return response.json(); } )
.then( json => {
for (var property of Object.keys(json)) {
document.getElementById(id).setAttribute(type, property, json[property]);
}})
.catch(function() { console.log('error: ') })
}
●
var url = 'https://rzr-webthing-example.glitch.me/'; // For simulator
// url = ‘http://webthinghost:8888’; // For device
update('foo’, 'motor', url + ‘/properties’);
●
curl -X PUT -d '{ "angle": 5}' $url/properties/angle
<a-scene>
<a-entity id="foo" motor="angle: 45"></a-entity>
<a-camera position="1 1 3"></a-camera>
</a-scene>
19. Samsung Open Source Group
19
https://social.samsunginter.net/@rzr
Digital Twins with WebThing-IoTjs (on MCU)
https://purl.org/rzr/digitaltwins-webthings-iotjs-20190512rzr
20. Samsung Open Source Group
20
https://social.samsunginter.net/@rzr
Live control in 3D using A-Frame on GearVR:
https://youtu.be/s3r8pQtzhAU#wotxr-20190320rzr
22. Samsung Open Source Group
22
https://social.samsunginter.net/@rzr
Controlling real devices / consuming OpenData
https://purl.org/rzr/webthing-iotjs-opendata-20190202rzr