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 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
4051 ANY gate, more fun than a 4051 oscillator.
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JingleJoe



Joined: Nov 10, 2011
Posts: 878
Location: Lancashire, England
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PostPosted: Mon May 06, 2013 1:18 pm    Post subject: Reply with quote  Mark this post and the followings unread
efabric wrote:
I don't think I missed the point.

Yes you did and there's a great philosphical lesson: when you are missing the point you do not notice untill you relise and then one no longer misses the point unless one chooses to delude oneself.
This (below) shows that you have missed my point here and I don't like coming accross as a nit picking asshole but I like being misunderstood even less. I hope that's clear, I just want this idea I've had to be clear.
efabric wrote:

Another Idea : If you connect Y points with a packed resistor array , the X output can also send a random (or digitally controlled) Control Voltage to feed another VCO...
Resistor arrays contains matched resistors, simple to solder in parallel and easy to find in electronics garbadge...

A fun little concept and it would work but the whole point of my circuit was to look at things in a different light, DEFY CONVENTION! That's what I'm doing here, my idea is not to look at/use the multiplexor as a device to channel signals or voltages around, but instead as a programmable gate in which the 3 binary control inputs are your gate inputs, the 8 channels are the logic levels for each combination and the common connection is the output.
Audio frequency on the binary controls gives you the best results when combined with LFOs on the channels, nothing is "out of control" everything is perfectly as the programmer decides. The whole idea is to give only those fragments you mention in your initial message, they are the combined gate results of the three inputs.
Now do you see, DO YOU!?
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rossics



Joined: Nov 23, 2013
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Location: Australia
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PostPosted: Sat Apr 12, 2014 5:42 am    Post subject: Reply with quote  Mark this post and the followings unread
Had a lot of fun with this circuit, had to make it patchable, sounds great

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PHOBoS



Joined: Jan 14, 2010
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PostPosted: Thu Aug 31, 2017 8:32 am    Post subject: Reply with quote  Mark this post and the followings unread
looks and sounds nice rossics Very Happy


I am working on a lunetta synth made with some left-over circuits and I wanted to add some logic gates.
I don't have a lot of space so I had to choose which one. AND is nice for gating signals, XOR is useful to
get some nice sequences, ringmod sounds and it can be used as an inverter. So I settled on some switchable
gates using a mux. This does mean I can only use 3 gates instead of 4 (limited space) but I think it is
a nice compromise. It works similar to the XOA mixer posted on the previous page but this one can switch
between AND, XOR, NAND.

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Switchable AND/XOR/NAND gate
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