sexta-feira, 20 de abril de 2012

Microsoft Mathematics

Microsoft? Útil? Funcional? Gratuíto? Palavras que normalmente não estão no mesmo texto, mas desta vez é mesmo verdade...

Ei-lo: http://www.microsoft.com/download/en/details.aspx?id=15702



Um programa de cálculo capaz de manipulação simbólica (incluindo cálculo integral e diferencial), "plotagem" 2d e 3d, conversão de unidades entre muitas outras utilidades e tudo num interface apelativo e prático, integrável no windows e ainda por cima gratuito? Bom demais para ser verdade?... Bom, desta vez não...Não sei com que intenção subjacente (que não sou muito perspicaz em antever teorias da conspiração) mas certo é que Microsoft nos deu (a quem precisa de fazer umas contas de vez em quando) um brinde...

Experimentem...

domingo, 15 de abril de 2012

A problem:


A Vintage solution:



A Modern confirmation:

sexta-feira, 6 de abril de 2012

DONE!

Here it is, my finished Matsumi ValveCaster in a french candy tin...


Another trick to the box...And featuring a very particular power supply regulation stage: I call it the SuperVersatile regulator and it's a trick that allows you to use any AC or DC source up to 40V to power a pedal...

More on that later...

See you!

segunda-feira, 2 de abril de 2012

A DIY valve booster for guitar- Matsumin's Valve Caster

To celebrate the beginning of my Easter season college vacations, and following an article at Beavis Audio* that I had in the "to- do" list for a while, today I decided to give it a go an build my own Matsumin Valve Caster :

*Beavis's is probably the site I like the most regarding guitar and audio gadgetry

A single ended, battery operated (for those who can allow themselves a new 9V block every 1/2 hour) 12AU7 based guitar booster/mild overdrive...

Still on the prototype/sound check stage, here's how the thing looks after an hour of soldering and scrap box raiding:





The sound? Well, like all simple valve operated things, IS GREAT. Don't expect full-on Rocktron Rampage like distortion though... It's more like and ACDC "clean" sound tone, with a bit of adaptability, courtesy of the very-simple-but-rather-effective sigle capacitor tone control...

It does a marvelous job in adding some grit to my Fender Champ which is, by the way, also modified
(more on this off-topic here)

In fact the this is so damn good for a one-hour-or-so project that I even gave myself the work of recording a small clip, which I don't normally do while still under the "Leave me alone! I wanna play with my new gadget" effect...

Here it is (mind the rubish radio sound of my video camera and the mediocre show-off skills) direct throught the "high" channel of my Fender Champion 600


Here's a portuguese supplier of 12AU7 tubes, so my country mates out there can't argue that tubes are hard to find in Portugal...

Further developments later on!

domingo, 1 de abril de 2012

Valada, paradise very much known to everyone...

But still my favourite sailing destination...


Talking about trusses...

Rainha Dª Amélia car bridge over river Tejo, Valada do Ribatejo, Portugal