Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
Posted: Wed Mar 04, 2009 7:51 pm Post subject:
Gaaaa!
It doesn't look THAT much different from my previous posting.
My fingers are raw, my eyes are blurry and I have metal shards in places metal shards should never be found. Gotta love metal work...
I've go the panel about done and I've added a couple circuits to its guts. Power supply is built and I'll probably start with combining panel and circuit board the next couple days...
Right now I'm thinking Oak sides to cover the boxes previous life scars.
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Joined: Feb 02, 2009 Posts: 515 Location: London area
Audio files: 2
Posted: Thu Mar 05, 2009 4:35 am Post subject:
Nah it's all just foamcore board. I do have some metal and wood to make a decent box for this stuff, but that will come once I'm happy with the layout. It's close though. Heaps more oscillators and ICs are needed in this bad boy. You guys have given me a lot of ideas! Also had some great info that RF passed along, thanks!
Thanks for the line input advice, I used the volume on my mini amp to do that, and also turned the input of the soundcard all the way down before starting, then slowly raised them until it seemed ok. I've posted an audio sample in the other thread. Here also.
The look of THIS Lunetta machine to me man, is THEE 'Sex Pistols' look of a Lunetta machine taken TOO the top!! Absutively phenominal!! RAW! Gotta love THAT!!
And the lower mini panel of the three in the left - is that an LED packaging from Knightlite that's being used as a control support??? (The red / silver striped cardboard backing)
Quote:
I'm afraid to plug it into my sound card, do you think i'll ruin something?
Pfffft! Who cares?? With the look of your machine, I'd let it do what it wants!
Actually - quite possibly. The levels of DC coming out of yours may not be friendly to the PC's soundcard's input. I would definitely put the output through a pot (buffered by an opamp preferred) to drop it's level, before it enters into the computer:
Lunetta ---- buffer ---- left terminal of pot ------ center pot terminal to an output jack ---- right pot terminal to Ground.
What's the maximum AC that can enter your regular soundcard, everyone? 1 to 2 volts peak to peak, I think?
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
Posted: Thu Mar 05, 2009 9:26 am Post subject:
Rykhaard wrote:
Starting off very quietly, as if someone were waking up; grumbling to themselves about being tired (alternating lower pitch, that changes between 2 higher notes in each portion of the expression - that were dissonant to each other! ); and then the intensity starts picking up as if the person waking up has started enjoying their coffee - becoming more active - wandering around through the day - drinking too much coffee, as at the end of the track the awoken person is launching into a rage screaming at others for who know's WHAT reason - finally being subdued by the cops as they take the person away - the tune fading out.
Joined: Feb 02, 2009 Posts: 515 Location: London area
Audio files: 2
Posted: Fri Mar 06, 2009 2:38 am Post subject:
LOL, it's funny that I read your interpretation early in the morning with the first coffee of the day.
I'm glad you felt themes running through it, once I found a basic groove that i was happy with i kept adjusting it, trying to kick it up a notch each time but keep the basic feel. You're hearing a lot of happy accidents.
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
Posted: Sat Mar 14, 2009 6:03 pm Post subject:
I won't make an 'all on one board' Lunetta again. Back to modular designs for me.
Although there were surprisingly few issues from all that spaghetti - I did manage to fry a chip shortly after I was done wiring it all to the panel. Very naughty words were uttered during the resultant surgery.
If one of the chips in the center of the board ever again dies I'll be tempted to relegate the entire device to an out of site corner of the garage rather than go through that frustration again.
Anyway - It all works again - it makes good noises - and I'm feeling much better now.
Since the electronics are done, I've been doing some 'window dressing' on it ...
Here's a 'tagged' panel shot, front, and rear shot.
There were a couple (!) holes in the bud box prior to starting - I was able to cover many, but a few remain... I call it 'value added prior experience character'.
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Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
Posted: Sun Mar 15, 2009 3:30 pm Post subject:
Thanks Rych,
Yes - I used LM386 for the amps - gain of 20. I didn't (although now that you think of it - I prolly should have) put speaker out connections on it. The internal speakers are small - .5 watt, 2.5 inch. I do have line outs for each channel for a larger external amp. I just wanted something I could plug in and play with rather than set up an external amp/speakers each time. I did add line out's for a larger amp or running into another device.
Joined: Nov 18, 2007 Posts: 301 Location: England
Audio files: 11
G2 patch files: 1
Posted: Thu Apr 02, 2009 12:43 pm Post subject:
Here's a new picture of mine, still a work in progress. I've added a few more things to it, just need to order some more banana sockets and it will be half way there.
Newest additions are a 4015 shift register and 3 of Rych's 4023 oscillators, both really cool modules.
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That is COOL! Love that it has single diodes brought out to the panel! I am so doing that on the next panel I need to fill some space in... in fact the board I built today needs a few spaces filled!
HOLY CRAP a panel mounted IC socket!! GENIUS!!! *Idea Stolen*
It realy is a store bought Lunetta, even in a cool case with a handle & everything!
I have been looking around for one of those 'Digital Labs' logic trainers & breadboards, should make testing lunetta ccts. quicker & easier... or make me lazy & leave stuff on the breadboard for ages!
Joined: Jan 29, 2007 Posts: 300 Location: Australia
Audio files: 1
Posted: Sun Jul 05, 2009 4:24 pm Post subject:
I had plans to bring raw components out to the front panel for my lunetta. I thought of diodes, resistors, even pots and switches but I never though of sticking a ZIF socket right there on the front panel. Brilliant idea!
"Threshold Logic" fancy name for a comparator perhaps, altho next to it there is an op-amp comparator...
"Follower Hold" according to the panel it appears to bring the leg of a capacitor out to the front panel.
I'd planned to do a manual logic module & have been playing around patching pots into the lunetta with croc clips, but this has transistors as well! And another one on that blog has resistor & capacitor sections!
Seems they may still be making them even,the website is pretty light on info, the "complete data sheet on the Ed-Lab Model CES 702 Digital Training System" (as they put it) is a one page PDF ad.
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