Lunetta designs

[akrearke]

I post a lot if things here on electro music. Unfortunately, limited finances does not allow me to build most of the designs or finish them. However, I like to share... Here are my lunetta foils if anyone is interested. Most of them will be found on this site and others. The schematics are often included. as always they will have to be sized using the DIP pins. Thanks to everyone that provided the information. All remain untested...

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LUNETTA COMPLE WAVEFORM GENERATOR.bmp
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Filename:	LUNETTA COMPLE WAVEFORM GENERATOR.bmp
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LUNETTA DUAL VCO ALPHA 3.bmp
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LUNETTA CD40106 DUAL VCO.bmp
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[RF]

Thanks for sharing those akrearke...

bruce

[electri-fire]

Some CMOS on Invertor's E-chucK boards.

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E-chuck-Lunetta- 4040-12-bit-binary-counter.jpg
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E-chuck-Lunetta- 4051 1-8 multiplexer.jpg
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E-chuck-Lunetta- empty-16-pin.jpg
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[electri-fire]

One more...

Why do i do this? Well, my breadboard is an unreliable old piece of junk, I need a new one. So I do some of the layout in advance in MsPaint, with parts of the datasheets as a reminder to self. Might as well post these.


Some more explanation: I prepare the boards with a socket, batterie header and bypass capacitor (upper left).

Ground lines are extended with the green lines at the back, so I have ground running underneath the IC, and left and right of the board to have plenty of room for timing caps and pulldown resistors.

I used pulldown resistors even for unused inputs to keep the option of using it later.

I hope this will be convenient to some of you.

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E-chuck-Lunetta- 4099-adressable -latch.jpg
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[Inventor]

electri-fire, thanks for posting these! Its nice to see those boards getting some good use now.

Les

[electri-fire]

Corrected.

Edit: corrected AGAIN. Hrmpff...

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E-chuck-Lunetta-4031-64-state shift-reg.jpg
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[droffset]

These are great!

[electri-fire]

It's all in the datasheets, not exactly rocket science. But ok, one more then.

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E-chuck-Lunetta-4021.jpg
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E-chuck-Lunetta-4021 soldered.png
Description:	This is what it looks like. Notice the painstakingly measured matching pulldown resistors :) . Two pulldowns had to share a hole in the upper left corner.
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[electri-fire]

I had a pulldown on the 4031 drawing that shouldn't have been there. Please reload if applicable.

[electri-fire]

Some things are just too complicated or versatile. I've been making these little boards, selecting the most interesting IC's in my collection, but it's getting way too much. I need to preserve panel space.
This little 4017 board divides the input by 3 or five. Occupies one input, one output, one switch.

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E-chuck-Lunetta- 4017-divide-by-3-or-5.jpg
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[electri-fire]

Hey, I discovered these in my collection. The 4042 Quad Latch. What's that you may ask. It has 4 inputs, 4 outputs, 4 inverted outputs.

And two Enable inputs. When both Enable pins are equal, both Hi or both Low the four inputs are passed to the outputs, as is, and inverted.

At the moment the Enable pins are NOT equal, the outputs are held.

With one Enable input fixed to ground (or +V), the other Enable input can function as a single Hold switch.
I laid out a little scheme with a manual Hold switch.

But hey, come to think of it, using both enable pins and the 4 data in pins would take six oscillators. Six oscillators from a 40106 hardwired to the 4042 might be an interesting little module to have.

Edit: E0 to Ground corrected. Now it is actually grounded.

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E-chuck-Lunetta-4042-manual-S&H.png
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4042B - Quadruple D-latch.pdf
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[RF]

Electri-fire - You have become prodigious and beneficent!
Good stuff - Thanks for sharing!

bruce

[electri-fire]

I should mention: I just made this up, but...

What if I added a R2R DAC (like Inventor used in his 4-Osc-Lunetta schem he posted) at the outputs of the 4042?
Then we would have a 4-bit Control Voltage available to power the 40106 oscillators. Result? Silence, as the 40106 has no power, so no oscillations....

Now have a momentary +V added to pin 16 of the 40106 to start the circuit. Oscillations start, and voltages are held at the (powered) 4042.
Now the 40106 is powered by the varying output of the 4042 R2R DAC.

Output frequency of the 40106 change with varying voltage, thus changing the patterns from the 4042. Those patterns will change the output frequency of the 40106. Next, .....


(electri-fire has just left the room. His manic laughter can be heard as he makes his way up the stairs.)

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[Inventor]

Way cool Mathe, I'm glad your getting good use out of those boards. I'll send you another ten soon as per your request. Keep on truckin'!

Les

[jean bender]

Hi !!

Very intersting shares ! Thanks for letting us discovering your work !

Could you explain me how you determine pull down resistors values, and why do you use them ??
Thanks !

[RF]

[jean bender]

YEAH !!

Perfect, it's exactly what i needed !
thanks for all !

[-minus-]

Yes, you see... this is IT!!! Hidden away among all the bum-fodder of this topic is some hands on stuff. This is EXACTLY what novices like myself need. Practical examples of what to actually make... what to solder where.

Eventually this elusive information will filter down from the secret society of the Kingdom of Lunetta into the lower caste masses...

Thanks everyone for sharing these designs! More of the same please anyone and everyone!

[RF]

[Rykhaard]

[DGTom]

bum-fodder? elusive information? How much have you actually bothered to read? How much time have you bothered to spend messing with ICs on a breadboard?

For me the Lunetta spirit is experimentation & investigation - just wire the IC pins to connectors of some sort & get connecting... how is that arcane knowledge!?


Anyway;

some great ideas here electri-fire, I think it really proves you can make some great stuff with pretty much any chips you have on hand when you approach them in a creative / explorative way

[RF]

[electri-fire]

So I built these one-chip modules, and droffset asked me in the chatroom recently how I get these organized. I had to admit I had these on the lap, pots, wires and batteries dangling all over the place.
Inspired by droffset's latest build, I decided to go a similar route, building a No-Frontplate-Lunetta, that can host my CMOS modules and have some generic stuff hardwired on board.

I mentioned wanting multiple out's, wich I have indeed, and they are great fun.

This being the design section, not the Show-Your-Lunetta thread, here's an interesting observation. You may have heard of Mickey Mouse Logic:
http://www.musicfromouterspace.com/analogsynth/mmlogic.html


I have a 40106 with 4 osc's, two of them hardwired to 4040's.
Playing around with LED's between random outputs (three of each) and picking of the sound from the LED's intermodulates the frequencies nicely. With multiple LED's, the sounds are different from each LED lead, but obviously rhythmically related. Nice for stereo. I'm starting to wonder why I'd even bother with this Gate stuff at all.

I will definitely add more output headers to accommodate interconnections with LED's. Maybe I best make an array of LED's near the in/out headers, some of my LED leads are too thick for the in/outputs, and having different color LED's is fun. Also my LED leads are bent all over the place now, and have to be forced in.

All LED's would need double (ah, make that triple) header in-out's to be able to send the sound to my mixer (a TL062, chosen for it's low power use).

This setup beats any rude words out of my CMOS Gate modules. It's fast and versatile, cheap, needs little space on the board, is easy to build, and could replace your fixed LED's.

electri-fire says: Recommendable.

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PICT0144.JPG
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[droffset]

Cool that you're using the LEDs that way. So the 1 or 0 value at each side of the LED is doing its own gating? Pretty sweet.

Multiple outs is a good idea, I've had to splice together Y-splitter cables to get mults.

EDIT
Posting this image in this thread to show how I did the overall design for mine.

[electri-fire]