Presentation

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# node-machinetalk

A library
to use Machinetalk
on Node.js

https://github.com/bobvanderlinden/node-machinetalk

.footnote[
    by Bob van der Linden
]
---
# Overview

* Motivation
* What is node-machinetalk
* Usage
* Web-based example interface
* Demo
* Questions
---
# About me

* Introduced to 3D printing a year ago
--

* Working part-time with tiny 3D print company
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* Web development
--

* Android development
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* OSS projects in off-hours
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# Motivation

--
* Controlling Machinekit from a browser

--
  * Zero-install client

--
  * Cross-platform

--
  * Single point for upgrades

--
* Integration into existing applications

--
* Easy to run on non-Machinekit systems

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# Why Node.js

* Javascript: familiar for a lot of developers
* Ecosystem: a lot of packages
* Focus on web
* Simple runtime

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# What is node-machinetalk

* Discovering

* Monitoring

* Controlling

Machinekit instances on a network
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# What is node-machinetalk

--
* .fa.fa-check-square-o[] Discovery .right[MachinetalkBrowser]

--
* .fa.fa-check-square-o[] status .right[StatusClient]

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* .fa.fa-check-square-o[] error .right[ErrorClient]

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* .fa.fa-check-square-o[] preview .right[PreviewClient]

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* .fa.fa-check-square-o[] command .right[TaskCommandClient]

--
* .fa.fa-square-o[] file (FTP)
* .fa.fa-square-o[] Remote HAL
* .fa.fa-square-o[] Tying it all together .right[MachineClient]

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# Dependencies

--
* Discovery
  * node-mdns
  * Avahi/Bonjour

--
* Communication
  * node-zmq

--
* Protobuf encoding
  * machinekit-protobuf-node
  * ProtoBuf.js

.footnote[https://github.com/bobvanderlinden/machinekit-protobuf-node]

---
# Usage

--
Initialize your project
```sh
npm init
```

--
Install node-machinetalk
```sh
npm install machinetalk
```

.footnote[https://github.com/bobvanderlinden/node-machinetalk#examples]

---
# Usage (discovery)
```js
var machinetalk = require('machinetalk');
var machinetalkbrowser = new machinetalk.MachineTalkBrowser();
machinetalkbrowser.start();
machinetalkbrowser.on('serviceUp', function(service) {
  switch (service.name) {
    case 'status':
        /* initializeStatusClient(service.dsn); */
        break;
  }
});
```
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# Usage (status)
```js
statusclient = new machinetalk.StatusClient(dsn);

statusclient.connect();

statusclient.subscribe('task');
statusclient.subscribe('motion');
statusclient.subscribe('io');
statusclient.subscribe('interp');
statusclient.subscribe('config');

statusclient.on('statuschanged', function(status) {
  console.log(status);
});
```
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# Usage (status object)
<div id="statusjson"></div>
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# node-machinetalk-example*

A web interface for Machinekit

https://github.com/bobvanderlinden/node-machinetalk-example

.footnote[*name will hopefully change]
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# DEMO
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# Web interface

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* Prototype!
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* Webserver
  * Based on .nowrap[node-machinetalk]
  * Communication using Socket.io
  * Cross-platform
  * Allows remote usage
--

* Web interface
  * Cross-browser
  * Build in components
---
# Thanks!
* Michael Habeler
* Alexander Rössler
* Bas de Bruijn
* All contributors
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# Questions?