software

154 Articles

FOSDEM 2023: An Open-Source Conference, Literally

March 1, 2023 by 6 Comments

Every year, on the first weekend of February, a certain Brussels university campus livens up. There, you will find enthusiasts of open-source software and hardware alike, arriving from different corners of the world to meet up, talk, and listen. The reason they all meet there is the conference called FOSDEM, a long-standing open-source software conference which has been happening in Belgium since 2000. I’d like to tell you about FOSDEM because, when it comes to conferences, FOSDEM is one of a kind.

FOSDEM is organized in alignment with open-source principles, which is to say, it reminds me of an open-source project itself. The conference is volunteer-driven, with a core of staff responsible for crucial tasks – yet, everyone can and is encouraged to contribute. Just like a large open-source effort, it’s supported by university and company contributions, but there’s no admission fees for participants – for a conference, this means you don’t have to buy a ticket to attend. Last but definitely not least, what makes FOSDEM shine is the community that it creates.

FOSDEM’s focus is open software – yet, for hackers of the hardware world, you will find a strong hardware component to participate in, since a great number of FOSDEM visitors are either interested in hardware, or even develop hardware-related things day-to-day. It’s not just that our hardware can’t live without software, and vice-versa – here, you will meet plenty of pure software, a decent amount of pure hardware, and a lot of places where the two worlds are hard to distinguish. All in all, FOSDEM is no doubt part of hacker culture in Europe, and today, I will tell you about my experience of FOSDEM 2023. Continue reading “FOSDEM 2023: An Open-Source Conference, Literally” →

Chataigne: An Open-Source Swiss Army Knife

January 6, 2023 by 47 Comments

[Ben Kuper] is a developer with a history of working on art installations, and had hit upon a common problem often cited by artists. When creating installations involving light, sound, and motion, they often spend too much time on the nuts and bolts of electronics, programming, and so on. Such matters are a huge time sink with a steep learning curve and oftentimes just a plain distraction from the actual artistic intent they’re trying to focus upon. [Ben] has been working for a few years on a software tool, Chataigne which is designed as the glue between various software tools and hardware interfaces, enabling complex control of the application using simple building blocks. Continue reading “Chataigne: An Open-Source Swiss Army Knife” →

Prototyping The Prototype

November 29, 2022 by 28 Comments

For basic prototyping, the go-to tool to piece together a functioning circuit is the breadboard. It’s a great way to prove a concept works before spending money and time on a PCB. For more complex tasks we can make use of simulation software such as SPICE. But there hasn’t really been a tool to blend these two concepts together. That’s what CRUMB is hoping to solve as a tool that allows simulating breadboard circuits.

Currently, most basic circuit functions are working for version 1.0. This includes passive components like resistors, capacitors, switches, some LEDs, and potentiometers, as well as some active components like transistors and diodes. There are some logic chips available such as 74XX series chips and 555 timers, which opens up a vast array of circuit building. There’s even an oscilloscope feature, plus audio output to incorporate buzzers into the circuit simulation. Currently in development is an LCD display module and improvements to the oscilloscope.

Besides prototyping, this could be useful for anyone, students included, who is learning about circuits without the need to purchase any hardware. The major downside to this project is that it there doesn’t seem to have a free or trial version, the source is not available, and it’s only for sale on Steam, Apple Store, and Google Play. That being said, there is a forum available for users to discuss problems and needs for future versions, so it’s possible that a community could build up around it. We’ve seen previously non-free versions of circuit simulation software become more open after some time, so it’s not out of the realm of possibility.

Thanks to [Thomas] for the tip!

Arduino IDE v2.0 screen with callout tags to identify features

Arduino IDE 2.0 Is Here

September 28, 2022 by 84 Comments

Arduino have released the latest version of their Integrated Development Environment (IDE), Version 2.0 and it is a big step up from the previous release, boasting plenty of new features to help you to develop your code more easily.

As the de-facto way for beginners to get into programming hardware, more experienced users have sometimes complained about what they see as the over-simplistic IDE — even lacking relatively basic features such as autocomplete. The new version provides this, and much more besides. Continue reading “Arduino IDE 2.0 Is Here” →

Diff Tool Knows What You Mean

September 10, 2022 by 20 Comments

We will admit to not being particularly artistic, but we do remember an art teacher telling us that sometimes it is better to draw what isn’t there instead of what’s there — a concept known as negative space. [Wilfred] makes a similar point when explaining his “fantastic diff” tool called, appropriately, difftastic. He points out that when comparing two programs, the goal isn’t so much to determine what changed, but rather what stayed the same. The more you can identify as the same, the less you have to show as a change.

The tool compares source code in a smart way, assisted by tree-sitter which has many different languages already parsed, at least well enough for this purpose. According to [Wilfred’s] post the tool supports 44 different languages ranging from bash and YAML, Verilog to VHDL, and C++ to Rust, among others.

Continue reading “Diff Tool Knows What You Mean” →

Mini Falcon 9 Uses NASA Software

July 26, 2022 by 17 Comments

[T-Zero Systems] has been working on his model Falcon 9 rocket for a while now. It’s an impressive model, complete with thrust vectoring, a microcontroller which follows a predetermined flight plan, a working launch pad, and even legs to attempt vertical landings. During his first tests of his model, though, there were some issues with the control system software that he wrote so he’s back with a new system that borrows software from the Space Shuttle.

The first problem to solve is gimbal lock, a problem that arises when two axes of rotation line up during flight, causing erratic motion. This is especially difficult because this model has no ability to control roll. Solving this using quaternion instead of Euler angles involves a lot of math, provided by libraries developed for use on the Space Shuttle, but with the extra efficiency improvements the new software runs at a much faster rate than it did previously. Unfortunately, the new software had a bug which prevented the parachute from opening, which wasn’t discovered until after launch.

There’s a lot going on in this build behind-the-scenes, too, like the test rocket motor used for testing the control system, which is actually two counter-rotating propellers that can be used to model the thrust of a motor without actually lighting anything on fire. There’s also a separate video describing a test method which validates new hardware with data from prior launches. And, if you want to take your model rocketry further in a different direction, it’s always possible to make your own fuel as well.

Continue reading “Mini Falcon 9 Uses NASA Software” →

Ortur Laser Will Go Open-Source

July 18, 2022 by 74 Comments

Well, that was fast! Last week, we wrote about a video by [Norbert Heinz] where he called out the Ortur laser engravers for apparently using the GPL-licensed grbl firmware without providing the source code and their modifications to it, as required by the license. Because open source and grbl are dear to our hearts and CNC machines, we wrote again about Norbert’s efforts over the weekend, speculating that it might just be unfamiliarity with the open source license requirements on Ortur’s part.

Because of [Norbert]’s persistance and publicity around the issue, the support ticket finally reached the right person within Ortur, and within two or three days [Gil Araújo], Support Admin at Ortur, managed to convince the company that going fully open source was the right thing to do. What remains is the question of how to do it, operationally.

So [Gil] asked [Norbert] to ask Hackaday: what do you want from Ortur on this, and how should they proceed? Via e-mail, he asked in particular for best practices on setting up the repository and making the code actually useful to non-programmer types. He said that he looked around at the other laser engraver companies, and didn’t find any good examples of others doing the Right Thing™, so he asked [Norbert] to ask us. And now we’re asking you!

Have you got any good examples of companies using open-source firmware, modifying it, and making it available for their users? Is a simple Github repo with a README enough, or should he spend some time on making it user-friendly for the non-coders out there? Or start with the former and work toward the latter as a goal? I’m sure [Gil] will be reading the comments, so be constructive! You’ll be helping a laser engraver company take its first steps into actually engaging with the open source community.

We said it before, and we’ll say it again. Good job [Norbert] for taking Ortur to task here, but also by doing so in a way that leaves them the option of turning around and doing the right thing. This also highlights that companies aren’t monolithic beasts – sometimes it takes getting your cause heard by just the right person within a company to change the response from a “this is a business secret” to “how should we set up our Github?” And kudos for [Gil] and Ortur for listening to their users!