Barcamp Viejo San Juan


Last Barcamp we organized was back in 2012 in Mayagüez. The one before that was in 2011, and the first one was back in 2010.

We already have a date for the next Barcamp Viejo San Juan, Tuesday, June 3 at 7PM. This time we’ll be meeting at Piloto151 in Old San Juan.

For those that don’t know what a Barcamp is, Barcamp is a conference in which the guests become the event speakers. We expect everybody to make a 10 minute presentation to the rest of the audience. The idea is to encourage the exchange of ideas in an open and interactive environment.

Even though the ideal situation would be that everybody gets a chance to present, we know it’s not possible. We’ll have 20 reserved spaces and they will be available on a first come-first served basis.  If there’s not enough time or you are not ready to present, the least we expect is for everybody to interact with questions, suggestions, and help create an environment of interaction with the presenters.

The format for presentations will be 10 minutes and focused around the topics like:

  • Web development & design
  • iPhone / iPad application design & development
  • Software development in general
  • Mobile application design & development
  • Interaction Design, information architecture, user experience
  • Tech startups & venture capital

Spots for presenting are limited so if you’d like to present you should arrive early. Like always, we’ll do everything possible to make this event another #win.

We’ll have beers, some hors d’oeuvres, and t-shirts. Please let us know you plan to attend by RSVP’ing on the Eventbrite event page. This helps us plan for space and food accordingly. 

Internet Speed Tests on a Raspberry Pi


A couple of weeks ago soynerdito soynerdito shared a bot he made to tweet internet connection speed results every now and then.

I then remembered I had a Raspberry Pi I wasn’t using at all. So I built a small app that runs speed tests every 3 hours. It’s based on speedtest-cli which is a Command line interface for testing internet bandwidth using

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The easiest way to add WebSockets to Django


TL;DR - I came up with a very simple solution to handle WebSockets in Django apps. You just install django-websocket-request, run a script and you have WebSockets for your Django app. The cool thing is that this solution makes Django believe its getting a (somewhat) normal HTTP request so you can reuse almost all of you application’s code. Plays nicely with Django REST Framework and with plain function-based views and class-based views. Check out the demo and it’s source code on GitHub.

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Auth with JSON Web Tokens


When it comes to implementing authentication on web apps, one solution you’ll definitely hear about first are cookies. Cookie-based authentication uses a server side cookies to authenticate the user on every request. This means that you’ll need to keep a session store, whether it’s on a database or on something like Redis. A solution you’ll probably not hear as often is token-based authentication which relies on a signed token that is sent to the server on each request.

Alberto Pose over at Auth0 wrote a great blog post about Cookie vs Tokens, diagrams how both of these method works, and goes over the benefits of using a token-based approach for authentication.

There’s a relatively new standard called JSON Web Token that happens to be backed by companies like Firebase, Google, Microsoft, and Zendesk. There are already many libraries to handle encoding and decoding of this tokens in the backend.

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The Hacker and Designer News Newsletter


After recently building a scraper and web API for The News, I thought  it’d be a cool idea to use that data somehow. First thing that came to mind was to build a newsletter. And so The Hacker and Designer News Newsletter was built.


Every week I’ll send a newsletter with a curated recap of the week’s best articles from Hacker News and Designer News on startups, entrepreneurship, hacks, programming, design, and more. Something I may consider for the new future is allowing people to subscribe to a simple and shorter daily recap.



I’ll add your logo, copy, and a link in the top of the newsletter. If you’re interested in sponsoring this newsletter, feel free to send me an email to:

Technical stuff

This time I didn’t take advantage of The News and decided to build a new system to collect and aggregate posts from Hacker News using HNSearch and from Designer News using a scraper. HNSearch has a niftee RSS feed that works beautifully and has all the available data. Designer News, on the other hand, has some inconsistency with the data available in the RSS and JSON feeds, so the only way to fetch all the data I wanted was by scraping their site.

Example response data format:

The project/hack is available in GitHub. Star, Watch, Fork at

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