Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
a_butterfly_in_an_analogue_computer_piksel21 [2021/11/18 13:16]
admin [Schedule] 		a_butterfly_in_an_analogue_computer_piksel21 [2021/11/18 18:00] (current)
admin [A Butterfly in an Analogue Computer]
Line 1: Line 1:
 ====== A Butterfly in an Analogue Computer ====== ====== A Butterfly in an Analogue Computer ======
  
-by Wolfgang Spahn+by Wolfgang Spahn\\
 20 Nov 2021\\ 20 Nov 2021\\
 [[https://21.piksel.no/2021/11/20/a-butterfly-in-an-analog-computer/|Piksel 21]]\\ [[https://21.piksel.no/2021/11/20/a-butterfly-in-an-analog-computer/|Piksel 21]]\\
- 
  
 {{:confetti_3702b.jpg?400|}}\\ {{:confetti_3702b.jpg?400|}}\\
  
-===== Schedule =====+A workshop for an Chua Circuit with in an analog computer to generate 
 +chaotic signals, noise and sound. 
 +This circuit generates chaotic signals over a wide range of frequency 
 +therefore it is an interesting device for noise and sound art,  
 +performances and installations.\\ 
 +\\ 
 +In the 1970th Edward Lorenz developed a mathematical model for the  
 +weather and climate prediction, the Lorenz Attractor, a strange  
 +attractor with chaotic and fractal behavior and sensible initials  
 +conditions, that in the end could lead for example to a tornado in  
 +Brazil - the so called Butterfly Effect. 
 +At that time it was not possible to compute this module with in an  
 +analog computer, the chips for doing the multiplication were to  
 +noisy. That’s why in 1983 Leon O. Chua introduced a much simpler  
 +circuit (no multiplication) with the same chaotic behavior, the Chua  
 +Circuit.\\ 
 +{{:butterfly_web-1536x864_1_.jpg?400|}}\\
  
-=== Part 1: Background, Introduction and Build ===+The Analog Computer Confetti is a modular system that makes it  
 +possible to perform all kind of computations and operations on base  
 +of electrical voltage. This stack able modular electronic analog  
 +computation system was and is still developed by Wolfgang Spahn since 
 +2015.\\ 
 +\\ 
 +Chua’s Circuit can be made out of two modules of the analog computer Confetti, aGyrator and the Chuas Diode. The analogue computer Confetti is a modular system that makes it possible to perform all kind of electronic computations.\\ 
 +\\ 
 +In the workshop we will learn the basic functions of an analog  
 +computer. We also will build the two main components for an Chua  
 +Circuit as modules of the analog computer Confetti: a Gyrator and a  
 +Chua Diode. With these two modules we will create the Chua Circuit to 
 +listen to the butterfly in our tornado.\\ 
 + 
 +---- 
 +==== Part 1: Background, Introduction and Build ====
 [[https://dernulleffekt.de/doku.php?id=analogcomputation:01_chuascircuit|Analog Computation #01 - Chua's Circuit]]\\ [[https://dernulleffekt.de/doku.php?id=analogcomputation:01_chuascircuit|Analog Computation #01 - Chua's Circuit]]\\
  
-== About anlogue computation ==+== About Anlogue Computation ==
 [[https://paperpcb.dernulleffekt.de/doku.php?id=analog_computer:analog_computer_main|Confetti - An Analog Computer]]\\ [[https://paperpcb.dernulleffekt.de/doku.php?id=analog_computer:analog_computer_main|Confetti - An Analog Computer]]\\
-== and Chua's Circuit== 
-{{:1280px-chua_s_circuit_with_chua_diode.svg.png?200|}} 
  
-==build a computer==+== ... and Chua's Circuit== 
 +{{:1280px-chua_s_circuit_with_chua_diode.svg.png?200|}}\\ 
 +//(graphic by [[https://commons.wikimedia.org/w/index.php?title=User:Chetvorno&action=edit&redlink=1|Chetvorno]], [[https://creativecommons.org/publicdomain/zero/1.0/deed.en|CC0]])// 
 + 
 +== Build an Analogue Computer ==
 {{:confetti116_chua_s_diode_ii_01.jpg?200|}}\\ {{:confetti116_chua_s_diode_ii_01.jpg?200|}}\\
 [[https://paperpcb.dernulleffekt.de/doku.php?id=analog_computer:confetti116_chua_diode|Confetti 116 Chua's Diode]]\\ [[https://paperpcb.dernulleffekt.de/doku.php?id=analog_computer:confetti116_chua_diode|Confetti 116 Chua's Diode]]\\
Line 33: Line 65:
 ---- ----
 === Part 2: See, Listen and Discover  === === Part 2: See, Listen and Discover  ===
-- writing a progrmm for an analogue computer\\ + 
-- X-Y-Z Visualisatio\\ +==writing a progrmm for an analogue computer== 
-- Voltage Controll\\+{{:chua_s_circuit_02.jpg?200|}}\\ 
 + 
 +"patching is thre new programming""\\ 
 +{{:chua_s_circuit_setup_01.jpg?400|}}\\ 
 + 
 +== X-Y-Z Visualisation == 
 +{{:chua_s_circuit_pure_134355.jpg?400|}}\\ 
 +{{:chua_s_circuit_02_xyz.jpg?200|}}\\ 
 + 
 +== Voltage Control == 
 +OpAmp with a LDR in the feedback loop.\\ 
 + 
 +[[https://en.m.wikipedia.org/wiki/Variable-gain_amplifier|Voltage Controlled Amplifier (VCA)_wikipedia.org]]\\ 
 + 
 +[[https://en.m.wikipedia.org/wiki/Operational_transconductance_amplifier|Operational Transconductive Amplifier (OTA) _wikipedia.org]]\\ 
 +[[https://en.m.wikipedia.org/wiki/LM13700|LM13700 _wikipedia.org]]\\ 
 +**CA3080, LM3080**\\ 
 +[[https://www.banzaimusic.com/CA3080AE.html|CA3080AE _banzaimusic.com]]\\
  
 ---- ----
 +==== Links & Recources ====
 +
 +[[https://www.chaotic-circuits.com/]]\\
 +[[http://www.chuacircuits.com/]]\\
 +[[http://nldlab.gatech.edu/w/index.php?title=Group_3_2012]]\\
 +[[http://www.instructables.com/id/A-Simple-Chaos-Generator]]\\
 +[[http://www.scholarpedia.org/article/Chua_circuit]]\\
 +[[http://crossgroup.caltech.edu/chaos_new/Chua.html]]\\
 +[[http://jamesnsears.com/archive/ecechua.htm]]\\
 +[[https://hypertextbook.com/chaos/strange/]]\\
 +[[https://www.vanderbilt.edu/AnS/psychology/cogsci/chaos/workshop/WorkshopF.html]]\\
 +
 +----
 +if not other mentioned contend of this page is by Wolfgang Spahn (2008-2021) All Rights Reserved\\
 +