On Analog Computers

[@mudspringer]

I've been a developer forever...I really enjoyed this! It occurs to me that someone could probably develop a hybrid system that would interface a digital computer with a control system that would take the place of the patch cords - etc.

[@christopherjackson2157]

Fascinating talk ❤

[@LYehiaX]

Useful presentation. Please can you do breadboard LORENZ Circuit

[@Filmalot]

At the moment I'm not able do build the Lorenz circuit on a breadboard. I don't have (the expensive) AD633 multipliers in stock.

[@LYehiaX]

@@Filmalot I'm trying to build a chaotic circuit, if i got questions or any problem how can contact you ?

[@Filmalot]

@@LYehiaX A bit late but still. There is a Facebook group "Analog Computers". There is a lot of knowledge on AC there and lots of the members are very helpful.

[@fititocom]

@@Filmalot you could make a 4 quadrant multiplier with an inexpensive lm13700, i tried both the ad633 and the lm13700 and the lm13700 works very good too, not super precise like the ad633 but for an attractor is good enough (:

[@Filmalot]

@@fititocom Not always suitable for serious analog computing but I do use them in my sound/synth setup. I bought a lot of them for one-tenth of the price of an AD633.

[@snapo1750]

Is there a way to build a shift register in analog with LED's?

[@Filmalot]

Probably yes, but it's much easier to use digital elements for this. It's not forbidden to use digital 🙂 Go hybrid!

[@snapo1750]

@@Filmalot the problem i have / would like to solve has no possibility for digital without investing at least 10m usd for a custom asic 🙂 What i am looking for is 4096 analog outputs. the input is being feeded with pulses +/-3V digitally. the every pulse added should be put out first in the first analog output, then the second, then the 3rd... and so on. What i am thinking is create 2d array of led's apply 2 different constant sinewaves, and the pulses just add up (increase decrease, therefore i would have a shift register in analog that uses 2 vectors. But i am still thinking about it how to do it completely analog 🙂

[@Filmalot]

@@snapo1750 I'm afraid I can't help you any further. Do you know about the FB group on analog computers? facebook.com/groups/1109826729371538/

[@jeremysender]

Hello, I really enjoyed this. Have you come across software that allows you to enter a mathematical function and it optimizes - designs an analog circuit? Sort of like a mathematical ---> analog compiler on a hardware level. Thank you.

[@Filmalot]

Thanks for the comment. I have not seen such software before. But my assumptions are that it is development. Some people/groups are busy developing analog computers on a chip. They would be happy with such software. There is a Facebook group "Analog Computers". Maybe somebody there knows more on the subject.

[@octaviustjiantoro554]

Can we use this for music recording?

[@Filmalot]

The output of most contemporary analog computers is a voltage. Usually between -10V and +10V. It's easy possible to scale this to (say) 0V and +5V. Then the output can be used to control analog synths that use control voltages in that range (like a lot of Doepfer modules.) It's also possible to generate audio-range wave forms. On my DIY system the frequencies generated are on the low spectrum, as in less than 1000 Hz. (But in practice more in the 10 Hz range.)