Quick Jupyter Notebook Launcher for KDE

A simple right-click menu option to launch containerized Jupyter notebooks in any directory.

The Akai MPC One is a nice device, but it is a pain to backup if you have to get the SDCard out everytime. Using the SSH mod discovered by TheKikGen, it is easy to connect over ssh and get whatever you need.

On using 3d printer screens and controllers for your own projects.

I bought some of those cheap 3d printer controllers on the big evil site for $12: BigTreeTech Mini 12864. There are other similar ones in the same price range from other brands, but I can’t guarantee they have the same pinouts and controllers. Also these came with a tiny yellow rubber duck, always useful when you try to make sense of schematics.

The thing is, these are made for 3d printers so they expect you to plug them directly and not worry about implementation details.

Fun thing is, for some printer models, you need to make an adapter cable as nobody seemed to have settled on a standard for those and pinouts are all over the place.

To save you from the hassle of figuring out how to use those with an Arduino or an ESP, and likely for me later when I will need that again, I decided to write down all I discovered about them.

I recently got a WD SN850. There is a little trick to do when you receive it to switch it to 4k LBA and thus getting better performance by using native block size.

I finally put my hands on a Trinket M0 for the Trackpoint. Meaning, no more ugly driver.

A friend of mine Pierre Grangé-Praderas needed to make a webpage with graphs. So I decided to play with Cytoscape and Hugo and see if I could integrate them together.

I spent a day adding a trackPoint to my keyboard to avoid having to move all the time to the trackball. I wanted something that would allow me to quickly jump from one window to another while keeping my hands on the keyboard.

Finally, I am trying to reorganize this website, add a portfolio and other kind of stuff that will help me remember the ton of stuff I wrote but never talked about. I’ll document in this article the different kind of things I tried. I am especially excited by the portfolio aspect (of which most will be private though).

Took me some time to learn how SNMP v3 (and SNMP in general) works. But now I have nice dashboards.

When using docker in LXD/LXC, the FS performance is really really bad.

I needed to run Docker in LXC containers on my Ubuntu servers.

I’m now a heavy user of Draw.io a great piece of Free software from jgraph. However sometimes I need to use it offline… Here is an easy guide on how to use it locally.

I’m moving all my old file-based ssh and gpg keys to a YubiKey 4 hardware key. This post will get updated with a few notes along that migration. It also covers how to use pass and pass-tomb with these. And then I fell down the rabbit hole of using those keys everywhere…

[Draft published as is, this is old.] I am playing with Pulsar and Heron in Kotlin. And I was always struggling with getting my kotlin project packaged properly. Here is a walk-through.

I was complaining on IRC about someone sending me a screenshot as a word file. Then my friend Aaron Lav had a comment that I turned into that project.

How to update the PERC6/i firmware from Linux.

We had this conference in Chicago in 2016. As I was playing with the laser-cutter and making planetary motion devices see Here, I also was playing with the idea of circular slide rulers.

As the calculation of elution volumes and retention in CCC and CPC are using multiplications and divisions it is possible to do these on a circular slide ruler (or a normal one) by using logarithmic scales (because additions in that space correspond to multiplications in linear scale).

A bit of design, metallic-gold acrylic, flexible metallic with black background acrylic for the tag, and a piece of wood made by a colleague (Jim). I also found that simple M3 or M4 (can’t remember) screws with thin thread will lock perfectly two pieces of acrylic (with a hole cut slightly below the diameter of the screw). It takes a bit of tinkering with the parameters of the laser as the kerf tend to vary with the speed and power of the laser. But for that I made a simple svg file with circles of different diameters and colors. And each color had different settings in the laser driver. That way even with new materials, I can determine quickly what the settings should be.

I made some new stuff on this project. Now it has a “working” pre-prototype that can do Wifi+RFID+WS2812 Led ring.

Using magit-status each time or having to type the commands was boring.

Today I had to automate changing some IDs in Protege.

Today I received an alert from my work email about a mailbox too full.

To test the ESP, the Arduino system is good enough. I’ll explain here the steps to install it.

I wanted to make a fretless guitar like Vigier of Ron Thal. With a metal fret board. I’m not there yet…

How to connect the ESP8266 and how to communicate with the default non-free firmware to test the device.

I just received my ESP8266-12F from Electrodragon. I’m going to document the steps to use that thing on a GNU/Linux machine.

Tonight, I played with git hooks. Because I wanted to be able to regenerate the website remotely just by doing a push to a specific branch of the website repo.

This article is in english, but the original one is in french. Just because many english-speaking people asked me about these transforms. (Cet article est en anglais, même si l’original est en français. C’est juste parceque on m’a plus souvent demandé en anglais qu’en français plus d’informations sur ce sujet. Mais ça devrait être plutôt clair pour les francophones.)

Through my migration to o-blog v2.5 I found some old experiments I did with FFT related to this Rapport d’écoute - Sur les épaules de Darwin (France Inter) - La forme des mots

I use Notmuch to manage my emails (and that’s just wonderfully fast) and use the Emacs frontend for it. But when I wanted to save attachements, it was not that easy to create folders. I had to exit the save, open a terminal, a dired or whatever create the folder… I use Helm for managing completion in emacs (and that’s a nice piece of software too).

To avoid that and with the help of Sacha Chua, I managed to add a shortcut in helm read file:

Suite à l’émission de France Inter « Sur les épaules de Darwin, La forme des mots », j’ai décidé d’expérimenter un peu avec la conversion d’images en sons par transformée inverse de fourier.

Pour cela, j’ai utilisé le logiciel ARSS, un peu vieillot, mais qui fait ce qu’il a à faire.

Commençons par un petit exemple, transformons l’image de la formule de cette fameuse transformée en son avec la commande :