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obijuan.mstdn.social.ap.brid.gy
Obijuan
@obijuan.mstdn.social.ap.brid.gy
5 followers 0 following 180 posts
Hola! Soy Obijuan!
I'm a researcher on robotics. I really believe on the opensource spirit of sharing information. Work at URJC University, Madrid […]

[bridged from https://mstdn.social/@Obijuan on the fediverse by https://fed.brid.gy/ ]
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Reposted by Obijuan
johl.mastodon.xyz.ap.brid.gy
A comprehensive line-by-line commentary on the UNIX Fourth Edition (1973) source code. Covers the kernel, file system, device drivers, shell, and utilities.
https://github.com/unix-v4-commentary/unix-v4-source-commentary
GitHub - unix-v4-commentary/unix-v4-source-commentary: A comprehensive line-by-line commentary on the UNIX Fourth Edition (1973) source code. Covers the kernel, file system, device drivers, shell, and utilities.
A comprehensive line-by-line commentary on the UNIX Fourth Edition (1973) source code. Covers the kernel, file system, device drivers, shell, and utilities. - unix-v4-commentary/unix-v4-source-comm...
github.com
January 16, 2026 at 3:46 PM
obijuan.mstdn.social.ap.brid.gy
Ordenador Amstrad CPC en la FPGA de la Alhambra-II con la Multimedia Shield. Gracias a Jesús Arias. ¡Impresionante! ¡Y todo con Herramientas LIBRES!

https://github.com/Obijuan/Cuadernos-tecnicos-FPGAs-libres/wiki/ZX%E2%80%90Spectrum#amstrad-cpc

#FPGAwars
January 24, 2026 at 11:39 AM
obijuan.mstdn.social.ap.brid.gy
Me han invitado a la ceremonia de los European Open Source Awards que se celebrará en Bruselas el 29 de Enero 🙂

¡Qué ganas de conocer a los nominados!

https://awards.europeanopensource.academy/
@europeanOSacademy
#eosawards26
January 24, 2026 at 10:20 AM
obijuan.mstdn.social.ap.brid.gy
Prueba del mítico juego Knight-Lore corriendo en el ZX-Spectrum en la FPGA de la Alhambra-II + Multimedia Shield. Como es hardware real, hay que cargarlo mediante un archivo de audio, a la antigua usanza. Tarda 3 minutos
https://github.com/Obijuan/Cuader […]

[Original post on mstdn.social]
January 17, 2026 at 11:00 PM
obijuan.mstdn.social.ap.brid.gy
Probando el ZX-Spectrum de Jesus Arias en la FPGA de la Alhambra II + Multimedia shield. ¡Es espectacular!!!! 😃😃
Estoy poniendo aquí la info:

https://github.com/Obijuan/Cuadernos-tecnicos-FPGAs-libres/wiki/ZX%E2%80%90Spectrum#zx-spectrum

#FPGAwars
January 16, 2026 at 11:07 AM
obijuan.mstdn.social.ap.brid.gy
Probando el juego retro DEFENDER en la FPGA de la placa Alhambra-II + Multimedia-shield. Tanto la shield como el defender son trabajos de Jesús Arias

Se usa una pantalla VGA y un teclado PS2, que se conectan a la shield

Más información […]

[Original post on mstdn.social]
January 14, 2026 at 5:05 PM
obijuan.mstdn.social.ap.brid.gy
Ya tengo terminado el ensamblaje final propuesto en el libro FreeCAD Beginner's handbook, por Aleksander Sadowski

Aunque el libro es para principantes, he aprendido muchísimo. He utilizado la versión 1.1rc1 de @FreeCAD
January 13, 2026 at 8:57 AM
obijuan.mstdn.social.ap.brid.gy
Ya me ha llegado el libro de Freecad de Aleksander Sadowski
¡Tiene pintaza! @FreeCAD
January 11, 2026 at 6:19 PM
obijuan.mstdn.social.ap.brid.gy
Mis reyes magos 😀. Libro recomendado por @esoriano
January 6, 2026 at 3:00 PM
obijuan.mstdn.social.ap.brid.gy
Asignatura de Arquitectura de computadores en la @eif_urjc

Publicada la sesión L14: Macros

Aprenderemos el concepto de macros y cómo realizarlas con el simulador RARs, para que nuestros programas en ensamblador sean más legibles y fáciles de hacer […]

[Original post on mstdn.social]
December 27, 2025 at 7:55 AM
Reposted by Obijuan
acb.mastodon.social.ap.brid.gy
Borland TurboVision (the PC text mode windowing UI used in Turbo Pascal/C++) has been open-sourced and updated to work seamlessly on Linux and with Unicode:

https://github.com/magiblot/tvision

It’s all in C++, though if someone hasn’t wrapped it in bindings for Python/Rust/&c. yet, surely they […]
Original post on mastodon.social
mastodon.social
December 6, 2025 at 11:33 AM
obijuan.mstdn.social.ap.brid.gy
Hoy por la mañana he pasado un rato muy agradable en el café de la @OfiLibreURJC con Tomás Zarza y el maestro de maestros @jgbarah , hablando sobre software y hardware libres. ¡Muchas gracias por invitarme!
December 3, 2025 at 1:24 PM
Reposted by Obijuan
tml.mementomori.social.ap.brid.gy
Now I can reveal what I have been working on since October last year:

Collabora Online now available on Desktop

Same look. Same code. Your files, your device.

We’re excited to share the first release of the new Collabora Office for desktop — bringing the familiar, powerful Collabora Online […]
Original post on mementomori.social
mementomori.social
November 26, 2025 at 12:14 PM
Reposted by Obijuan
b0rk.social.jvns.ca.ap.brid.gy
next: Bite Size Bash!

I love writing simple bash scripts (you can do so much!) but bash has some weird gotchas. This zine explains all the surprising bash things that have tripped me up.

reading the reader testimonials for this one is always funny to me […]

[Original post on social.jvns.ca]
November 27, 2025 at 3:45 PM
Reposted by Obijuan
b0rk.social.jvns.ca.ap.brid.gy
finally: How Integers and Floats Work

This one started out life as "a zine about how computers represent data in binary", but then once we'd explained how numbers work we ran out of space. But a lot of what computers represent IS numbers so I still think of this as the "binary zine" […]
Original post on social.jvns.ca
social.jvns.ca
November 27, 2025 at 4:04 PM
obijuan.mstdn.social.ap.brid.gy
Laboratorio de Arquitectura de Computadores, con RISC-V. Sesión L3: RV32I: Resto de instrucciones

Sesión adicional (opcional) para completar el estudio de la arquitectura base RV32I: manipulación de bits, desplazamientos, operaciones con signo […]

[Original post on mstdn.social]
November 25, 2025 at 11:43 AM
obijuan.mstdn.social.ap.brid.gy
Fotos del stand de Robotech durante las Jornadas de Carrera Profesional en la @eif_urjc

(Robotech: https://robotech-urjc.github.io/mainweb/)
October 9, 2025 at 8:41 AM
obijuan.mstdn.social.ap.brid.gy
Foto con el robot R2-KT de la fundación https://www.thepinkforce.org/ durante las Jornadas de Carrera profesional en la @eif_urjc
October 9, 2025 at 8:29 AM
Reposted by Obijuan
jsmanrique.mastodon.social.ap.brid.gy
@Obijuan que buena pinta!
October 5, 2025 at 12:24 PM
obijuan.mstdn.social.ap.brid.gy
¡Manic miner en modo texto! En esta prueba se mueve el personaje en un escenario inspirado en la pantalla 1 del juego
Lo veo interesante para enseñar programación con python de forma divertida, sin tener que utilizar bibliotecas gráficas […]

[Original post on mstdn.social]
October 5, 2025 at 12:01 PM
obijuan.mstdn.social.ap.brid.gy
Ya tengo los sprites del Manic miner en unicode para hacer pruebas
October 4, 2025 at 6:23 AM
obijuan.mstdn.social.ap.brid.gy
En las Jornadas de Carrera profesiona en la Escuela de Ingeniería de Fuenlabrada de la URJC @eif_urjc
https://gregoriorobles.github.io/2025-jornada-carrera-profesional/
October 2, 2025 at 7:50 AM
obijuan.mstdn.social.ap.brid.gy
Más pruebas con los píxeles en pantalla de texto. Pantalla de 8x4 caracteres (16x16 píxeles)
September 29, 2025 at 8:07 PM
Reposted by Obijuan
b0rk.social.jvns.ca.ap.brid.gy
stty

https://wizardzines.com/comics/stty/

(from The Secret Rules of the Terminal, out now! https://wizardzines.com/zines/terminal/)
your TTY driver has configuration you can see how it’s configured by running: stty -a for example it print out the current window size! Ctrl+S by default, pressing Ctrl+S wi(( freeze your terminal (and Ctrl+Q wi(( unfreeze) I have never wanted this in my life, you can turn it off with stty -ixon (fish turns it off by default) ###fun fact: changing Ctrl+C technically you can use stty to set a different keyboard shortcut for Ctrl+C, (ike “u” stty intr u this is extremely chaotic and I can’t imagine a reason that I would ever do this though programs have to configure the TTY driver to get friendly features developer: I want arrow keys to work in my program! other person: better tell the TTY driver to turn off canonical mode! (more on the next page) the TTY driver’s settings are called “termios settings” for the gnarly details: man termios but if you’re writing a terminal program libraries like readline or ncurses will handle setting up the TTY driver panel 6 smiling stick figure with short curly hair: I’ve only needed to use stty once in the last 20 years and I mostly don’t understand its output but I think it’s a fun view into terminal internals!
September 24, 2025 at 3:21 PM
Reposted by Obijuan
gts.amd.im
Looking forward to #freecad 1.1

Lots of good new user friendly tweaks are on our way

https://www.youtube.com/watch?v=az2Yegw6ojE

#3dprinting
September 18, 2025 at 2:34 AM