Author: Jakub Petr

Detrministic Chaos drawings

These drawings were inspired by the theory of “Deterministic Chaos“.

THE THEORY: Deterministic chaos, often just called “chaos”, refers in the world of dynamics to the generation of random, unpredictable behavior from a simple, but nonlinear rule. The rule has no “noise”, randomness, or probabilities built in. Instead, through the rule’s repeated application the long-term behavior becomes quite complicated. In this sense, the unpredictability “emerges” over time.

There are a number of characteristics one observes in a deterministically chaotic system:

Long term behavior is difficult or impossible to predict: Even very accurate measurements of the current state of a chaotic system become useless indicators of where the system will be. One has to measure the system again to find out where it is. Sensitive dependence on initial conditions (a property noted by PoincareBirkhoff, and even Turing): Starting from very close initial conditions a chaotic system very rapidly moves to different states. Broadband frequency spectrun: That is, the output from a chaotic system sounds “noisy” to the ear. Many frequencies are excited. Exponential amplification of errors: In any real world setting small amounts of external noise rapidly grow to control the sytem. If this noise is below measurement accuracy, so that an experimenter can’t see or control the noise, then the system appears unpredictable. The microscopic “heat bath” is amplified to human scales. Local instability versus global stability: In order to have amplification of small errors and noise, the behavior must be locally unstable: over short times nearby states move away from each other. But for the system to consistently produce stable behavior, over long times the set of behaviors must fall back into itself. The tension of these two properties leads to very elegantly structured chaotic attractors.  LINK , WIKI

THE DRAWING MACHINE: The figures on the drawings are made by machine I constructed my slef, it uses three separate rotational movements driven by a stepper motors with worm gearbox. Two slowly spinning arms are attached with aditional 2 meter long aluminium profiles, this bonded motion makes simple 2D figures, but with the addition of the 3rd motion of turntable, it makes much more complex looking figures. Motion eg. speed and sense of rotation of each individual motor is progarammed separately and changing in time. Information about it is sent from the PC through arduino and motor-driver in to the motors. Another variables that you can change are the length of the primary arms attached to the motors, by this setting you can change the actual size of the drawing and proportion between two arms movement. Last hardware variable is the beginning angle position between the two attached arms. Just by changing this one variable you alwas get the different outcome, even if you used the same software (pre-programed figure) and other settings stayed the same.


Here you can see the final look of the “#Artificial_Life_Aquarell_Lighting”, based on WS2812B addressable LEDs driven by Raspberry Pi 3 + Teensy 3.2. Design of this project is made in cooperation with my friend and colleague Filip Dobias in occasion of Designblok 2016. In videos, you can see application of the generative art script, mentioned below this article. It uses cellular automata + boids algorithm to produce these beautiful fields of colors, actually it is kind of artificial life, based on simple rules developing on the 2D plane in time.
The screen is circular cutout of the matrix 30x30px = 900 px / LEDs and it has more than one meter in diameter. LED’s are projecting RGB light and mixing together on the screen made out of opal organic glass. The software is running on the Raspberry Pi 3 computer + Teensy 3.2 and it is live stream projected on the screen. The colour of the light can be off-course changed or manipulated in to the white light or any other color wirelessly from the laptop, PC , smartphone or any other device trough the VNC client.


We used this animation, as our favourite generative art script outcome. It was sourced from this amazing site: Thank you a’lot for your awesome work, we appreciate it’s simple beauty.

NEW Platon

These are NEW re-designs of an older university project called “Platonic solids”, based on regular polyhedra solids. I added pendant LED lights hanging from the ceiling in adition to the previously existing design of the centre piece collection of vase and bowl. I have also idea to create these forms from thin flat sheet glass glued togeather in to the outer shape and then after to pour the internal hollow space with the liqiud silicon, which will solidify and make the whole piece look like to be made out of one piece of transparent glass.

MOUTAI bottle

This spirit bottle was designed for the chinese spirit called “Mao Thai”. It has rich cutted body and the bottom. Liquid in the bottle is sealed by the cork stopper, under the glass cap, which works as the shot glass too.



This trophy was designed for the “Czech-French Camber of Commerce” as a prize for the winners. There are several different types of shapes, which came from my interest in crystalography, so the shapes are matematical construct of absolutely perfect crystal without any iperfection in it’s 3D lattice. This particular one is Beta Quartz and the brass stand is it’s casted shadow made physical.

Algorythm based modeling

This is an example of algorythm based modeling in Grasshopper plugin in Rhinocerros 5.0 CAD software. Whole algorythm works on simple rules of “Turtle logic”, which gives the virtual machine orders where to branch, at which angle and length in 2D plane or 3D space. This logic structre defined by algorythm and few variables eg. angle or length can also run different number of discrete times, called generations. Generations does change the virtual age of the plant from the young and simle to the old and more complex looking.


Flower vase and bowl


This set of bowl and vase is designed to be cutted out of clear optic blocks of glass, therefore they are going to be perfectly clear and without imperfections inside of the glass. From this type of glass are made optic apartures as camera lenses and it is the best quality glass that can be used for such purpose.