This blog is owned of Paulino Ruiz de Clavijo Vázquez <pruiz@us.es> and it is not available in english. It only contains summaries with compiled information from other web sites translated to spanish.

The blog always reference the sources, if any source is missing please contact me to fix the issue. Anyway, if you are interested on my projects or my work the following portfolio summarizes all


The main professional activity inside of Universidad de Sevilla is in this link SISIUS provided by the institution.

Copyleft contributions

The best reference link is my account at GitHub: https://github.com/paulino, but there is a summary below.


  • Set of Peripherals for different Digilent Inc FPGA boards written in VHDL (https://github.com/paulino/digilentinc-peripherals).
  • SDHC Card reader host controller implemented in VHDL (https://github.com/paulino/minsdhcspi-host).
  • Nano File System, experimental filesystem aimed to be used in small embedded systems, like microcontrollers and FPGAs (https://github.com/paulino/nanofs-fuse).


  • 20Cones template for the CMS Dokuwiki:
  • Available at https://www.dokuwiki.org/template:20cones
  • Source code at https://github.com/paulino/dokuwiki-template-20cones


  • psnapshot backup tool written in python available at https://github.com/paulino/psnapshot/releases
  • hdstress another tool to stress disks/devices and find errors https://github.com/paulino/hdstress/releases

Free developments

The following projects are free but the source code has not been published.

Mobile apps:

  • 20Cones is an Android App to improve inline skating in slalom modality.

  • Android App at GooglePlay: https://play.google.com/store/apps/details?id=net.twcones

  • Project Web page: http://www.20cones.org/

  • Official App for Sevilla Patina Club:

  • Android App at GooglePlay: https://play.google.com/store/apps/details?id=org.twcones.sevillapatina

  • IOS App at ITunesConnect: https://itunes.apple.com/es/app/sevilla-patina/id1069715342?mt=8

  • Official App for the Los Palacios C.F..

  • Android App at GooglePlay https://play.google.com/store/apps/details?id=es.convertclick.lospalacioscf