Olafsen – Tech and more

Articles and notes on various stuff

  • I babin i fa sol dl’acqua

    Autore: Oliviero Marzocchi Mio nonno, nato nel 1880, quando era ragazzino, prima dell’anno 1895, lavorava come aiutante sarto. Dal 1954 è vissuto nella mia famiglia e più volte mi ha raccontato il seguente aneddoto sulla sua vita. In alcuni mesi dell’anno il lavoro di sarto era eseguito anche a domicilio (sotto il portico) dei clienti contadini…

  • Hard Disk Noise Reduction

    Hard Disk Noise Reduction

    Versione italiana in fondo Obtained by damping vibrations generated by plates rotation and heads movements Unlike modern hard disks with hydrodynamic ball bearings, old hard disks were pretty noisy, especially the firsts 7200 rpm units. My IBM Deskstar 60 GXP 40 GB was one of them. I also had a Maxtor 5400 rpm unit (not…

  • Application of a Heatsink on a Hard Disk

    Application of a Heatsink on a Hard Disk

    Versione italiana in fondo How to improve the cooling of a IBM 60GXP with a Duron heatsink Someone might still not know the IBM Deskstar 60GXP fame, so here it is: when IBM released them, some years ago, mostly units among those with capacity of 60 GB failed (they were soon called “Deathstar”). This problem…

  • Ritrovo salisburghese di Brumbrum

    Ritrovo salisburghese di Brumbrum

    13-15 Ottobre 2006, ospiti di Diana Foto mie Foto di Maurizio, prima parte Foto di Maurizio, seconda parte Foto di Maurizio, terza parte Prima revisione: Ottobre 2006

  • The Etching of a Printed Circuit Board

    The Etching of a Printed Circuit Board

    Versione italiana in fondo Steps followed to etch at home with chloric acid and oxygen peroxide circuit board for electronic circuits Project based on Tom Gootee‘s instructions The circuit I am etching is a microphone preamp, based on the scheme available on Elliott Sound Products. To etch this board I used hydrochloric acid (32% concentration), hydrogen peroxide…

  • Mouse and Joypad in Video Games

    Versione italiana in fondo Comparison of the two input methods and possible explanations for the success of specific game genres in consoles and personal computers This article as been adapted and expanded from a forum post I wrote in the MacityNet.it website. The standard input controller that ships with consolles like Nintendo or X-Box is, nowadays, a joypad with…

  • Hints about Backups Strategies Under Mac OS X

    Versione italiana in fondo Some time ago I started making backups from the command line, with a command similar to: The result was the update of the backup folder, at each backup. After the discussion in the MacityNet forum about the WWDC 2006 from Apple, I thought about using Subversion to make my backups by executing a “commit”…