Archive for the Uncategorized Category

JoSoS changed servers

Posted in Uncategorized on November 26, 2008 by Simon

In a not so long time I will pull the plug out of Mekka our Void7 server. The good old dog is ageing and I do not have the time to maintain any longer.

The consequence is that JoSoS had to move and my choice is to host it at wordpress.com… so here we are.

The old JoSoS can still be found at http://www.void7.org/~simon/josos. This location will be removed somewhere near the end of January so please update your bookmarks, links or whatsoever especially if you are looking for MidiPy or bluespam

Bad Vista

Posted in Uncategorized on September 26, 2007 by Simon

bad vista

Reportage about Deaf07 and Hive/Soft(n) Workshop @ Deaf07

Posted in Arts, Uncategorized, V2_ on June 26, 2007 by Simon

Deaf Rotterdam
Uploaded by leparisdelaculture

Too freaky 2

Posted in Uncategorized, V2_ with tags , , , on April 1, 2007 by Simon

Things have finally gotten less freaky.

For now i have reverted back to my old non-preempted kernel compiled with gcc-3.4. No EABI, no real-time. Just plain vanilla. I haven’t had any hangs for over 24 hours now so who knows. It will take me probably quite some time figuring out what actually happens, but as long as we don’t hang now, that can wait until after DEAF07!

New looks

Posted in Uncategorized on December 21, 2006 by Simon

josos.org has a new design. I decided to do it in wordpress (darn i’m getting lazy these days). The design is based, with some modifications, on the Barthelme 1.2 theme by Scott Allan Wallick.
The old josos.org is still available at http://www.josos.org/index/ while i’m moving softwares to SVN and all images to flickr.

Luxman A-383 part 5

Posted in Uncategorized on April 21, 2006 by Simon

Luxman A-383 repair

Today i tried to get the switch chips to work with the gumstix and driver i wrote earlier (see part4) without success. All switches are to stay open! The ones i got are TC9163N instead of TC9163AN may that be the problem (negated inputs or so (hm, i should try that)). Unfortunately i can only find datasheets for AN and not for N.

I still have bypassed the switching and hooked up my speakers just to listen if the sound is ok anyway (only used test signals and headphones until now and square waves don’t make you happy).
Addition i forgot to add yesterday: I also can confirm now that an excessive load has been the cause of all the troubles. It blew the input and record switches. As a result that the CK and DATA lines of the input select have -14V on it. Which blew the CK line of the big fat luxman driver chip, hence the missing clock signal. Fortunately it didn’t seem to cause much more damage. There is one more thing though which i found out yesterday. If i select direct input, the overload protector relay clicks on for a 10 to 20 seconds after which it releases and everything seems fine again. But it indicates some bad somewhere which i need to look into.

Second addition: Just found out i stupidly enough ignored the chip select bits for the switch array. Adding a high for bit 11 did the trick. I uploaded a new and slightly improved driver here: TC9163.

Luxman A-383 part 4

Posted in Uncategorized on April 11, 2006 by Simon

scopeToday written a little gpio driver for the gumstix to drive GPIO 58/59/60 (LDD[012] on the breakout board) as DATA, CLK and ST lines for the TC9163AN. The signals look good (see top image), but can only test the real thing as soon as i have some more time (hopefully the day after tomorrow).Anyway, the driver can be found here.