Wednesday, March 26, 2014

Lunetta Testing: Wah/Anti Wah Filter in Action

This vid shows how my progress for an improved vcf (of sorts) is coming along.  In a nutshell: it's basically Craig Anderton's Wah Anti Wah schematic with the addition of a transistor to add cv control.

Here's the schematic of the original wah/anti wah:

Tuesday, March 18, 2014

Lunetta March 2014: Testing new Built in Amp

 It's been a while but I am updating a few things in the Great Machine.  I think it's cool to be able to run audio out to a big external amp but I wanted to add a built in amp as well.  This is just a small Velleman kit I had bought a few years back and it works very well with my current power supply
which runs on a regulated 12volts,

The tedious work for me is finding just the right spot for the speaker.  I may incorpoate it in a back panel of the lunetta.  Currently, it is open backed.

Friday, October 25, 2013

Lunetta Pitch Tracking Fun

I've had some priorities take me away from my electronic pursuits so I apologize for my absence.  Bloblore aka the Bit Crusher, continues to entertain me and confuse my family.  Better to explore the weird and unknown than hang with the mundanes, eh?

Here is a 5 minute clip showing a simple setup. One oscillator going into a 4040 and two divisions from that going to a NAND gate.  The output of that setup then goes to the 4046 pitch tracker.

I use the cd4046 often because it really gives the output of all those ins and outs some mojo; some finality.  It compare it a lot to my other passion, rock n roll.  Ya got to crank that tube amp to get the groove on.  Same idea here; regardless of how simple or complex our patching is, the success lies in the output.

Tuesday, October 8, 2013

What Led Me Down the Rabbit Hole

One thing I get asked about when people view my Bit Crusher or hear a clip online is, "Why do you want to make such insane noises?".  My answer doesn't get rid of the befuddled look on some faces, in fact I think they grow more concerned about my musical tastes.

Yes, that is a bust of Tor Johnson I'm working on!

The reality:

I grew up in the 70's watching shows like Creature Feature here in Chicago.  There were other channels showing low budget science fiction and horror on Saturdays or Sundays, but Creature Feature was the King. The strange sounds from creatures from outer space, the blinking consoles from reruns of Star Trek, forever stuck in my head.

I received my first video game unit around the late 70's as well;  a black and white pong style game system.  It was also the first piece of electronic harware I took apart LOL!

Enter the 80's where I was a young teen hooked on arcade games.  There was a time when there were arcade games such as Pacman, Galaga, Galaxian, etc., in every corner store.  I thought I hit the jackpot at JCPenny, which had a very large room on the upper floors dedicated to snatching tokens from pimply kids such as I was.

The mother load was a freestanding building in the far suburbs of Chicago called Friar Tucks.  This place was the mecca of video game life.  All the classics as well as the latest titles were there.  It set the mood right:  low lights and multiple rooms to find your dream machine.  The pulsing beats and blips from that army of game stations pummeled my ears.

And I was in heaven.

That is why I build these lo-fi machines; to recapture my youth as well as to create a weird sort of monument of my favorite things - games and science fiction.

Saturday, July 6, 2013

A Patch Session

I have got to get more patching cords!  Very easy to run short in session.  Been busy doing a number of different projects but I have finally fixed a few trouble spots on my lunetta.  The added 4040 in this example gives me more octaves to play with.  The added 4046 pitch tracker has a pot instead of a fixed resistor on pin 9.

Wednesday, July 3, 2013

Lunetta Lessons: 4015 Demo

Here's a little demo of the 4015 shift register now with twice the flavor.  Two oscillators control the Data and Clock pins of one half of this dual shift register chip.  I take its four outputs and connect them to my R/2R ladder and then feed the output to a 4046 vco.  None of these "modules" are difficult to build and the results are fun.