Henri Bergius

Get ready for NoFlo 1.0

After six years of work, and bunch of different projects done with NoFlo, we’re finally ready for the big 1.0. The two primary pull requests for the 1.0.0 cycle landed today, and so it is time to talk about how to prepare for it. tl;dr If your project runs with NoFlo 0.8 without deprecation warnings, you should be ready for...

Building an IoT dashboard with NASA Open MCT

One important aspect of any Internet of Things setup is being able to collect and visualize data for analysis. Seeing trends in sensor readings over time can be useful for identifying problems, and for coming up with new ways to use the data. We wanted an easy solution for this for the c-base IoT setup. Since the c-base backstory is...

Flowhub IoT hack weekend at c-base: buttons, sensors, the Big Switch

Last weekend we held the c-base IoT hack weekend, focused on the Flowhub IoT platform. This was continuation from the workshop we organized at the Bitraf makerspace a week earlier. Same tools and technologies, but slightly different focus areas. c-base is one of the world’s oldest hackerspaces and a crashed space station under Berlin. It is also one of the...

Flowhub IoT workshop at Bitraf: sensors, access control, and more

I just got back to Berlin from the Bitraf IoT hackathon we organized in Oslo, Norway. This hackathon was the first of two IoT workshops around MsgFlo and Flowhub IoT. The second will be held at c-base in Berlin this coming weekend. Bitraf and the existing IoT setup Bitraf is a large non-profit makerspace in the center of Oslo. It...

Two hackathons in a week: thoughts on NoFlo and MsgFlo

Last week I participated in two hackathons, events where a group of strangers would form a team for two or three days and build a product prototype. In the end all teams pitch their prototypes, and the best ones would be given some prizes. Hackathons are typically organized to get feedback from developers on some new API or platform. Sometimes...

Reprogramming the hackerspace: MsgFlo IoT workshops at c-base and Bitraf

This July we’re organizing two hack weekends around MsgFlo and Flowhub: Sat July 1st - Sun July 2nd: Bitraf Internet of Things hackathon, Oslo, Norway Fri July 7th - Sun July 9th: c-base hack weekend, Berlin, Germany Both of these will focus on reprogramming the Internet of Things setup of the hackerspace. The aim is to connect more devices at...

NoFlo: six years of JavaScript dataflow

Quite a bit of time has passed since my two years of NoFlo post, and it is time to take another look at the state of the NoFlo ecosystem. To start with the basics, NoFlo is a JavaScript implementation of Flow-Based Programming: In computer programming, flow-based programming (FBP) is a programming paradigm that defines applications as networks of “black box”...

Edit as project and Flowhub live mode

In Flowhub you can create and edit full flow-based programming projects. The live mode enables introspecting running FBP systems. This weekend we rolled out Flowhub 0.19 which makes it easy to move between these modes. Live mode Flowhub’s live mode is designed for making software introspectable — flow-based systems provide access to the graph and network state information, and tools...

Atreus: Building a custom ergonomic keyboard

As mentioned in my Working on Android post, I’ve been using a mechanical keyboard for a couple of years now. Now that I work on Flowhub from home, it was a good time to re-evaluate the whole work setup. As far as regular keyboards go, the MiniLa was nice, but I wanted something more compact and ergonomic. The Atreus keyboard...

Forget about HTTP when building microservices

Microservices — an architectural pattern we recommended in our 2012 International PHP Conference keynote — is pretty popular these days. There are many benefits to consider: Independent development and release lifecycle for each microservice Ensuring clear API boundaries between systems Ability to use technologies most applicable for each area of a system In an ideal world, microservices are a realization...