TOB is an open project of the Berlin electronic artist 
Jo FRGMNT Grys
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gtx tob 06/2011
3 December 2011
1 September 2011
Downloads
Different workshop related downloads are available:
The illustrated Walkthrough of PCB Production shows how I do it in my electronics lab since 2007. I heard of & tried the toner method years ago – but for a long time was less successful in reliably producing nice quality PCBs. I tried photo paper, telephone book paper, color pages of magazines, dextrin covered paper, the various catalogs of electronic supply companies. I tried different temperatures of the hot iron, higher & lower pressure. I tried different board cleaning methods, different chemicals, until I could cut “the chemicals” down to the etching agent & maybe isopropyl alcohol (a cheap vodka would do as well). Of the etchants I tried two: Ferrum-III-chloride (FeCl3) & sodium persulphate (NaS2O8) but want to try etching with copper-II-chloride (CuCl2) as an e-friendly closed cycle alternative. Now here is my recipe at the moment:
<- updated
My Website´s logo was inspired by a traffic sign I saw on the Belgian Autobahn some years ago. This little graphic adventure is some vectorgraphic work I did about signs for ice, frost & snow flakes & permutations thereof. If the “real” Belgian ice warning sign looks like I recall it, I could not verify despite devoting some effort to searching for it.
The long awaited reader reader for the CTM 2010 workshop, includes schematics & layouts of the shown circuits:
Here I made a quite useful table of SMD (SMT) component sizes:
This is a short intro handout for successful circuitbending (auf deutsch) :
This is the handout from a workshop in xxxxx, Berlin, a VGA-monitor as wave display:
In summer 2009 I had a discussion with a friend of mine Andrzej Wróblewski aka Bohomaz, stencil artist, about vector based pattern generation. This inspired me to do some visual studies in spirographics. Here you find some full resolution pdf – especially the first is a bit heavy in pdf rendering – but hey, it is A3 and easily can be printed out in A0 (all are Creative Commons 3.0 BY-NC-SA licensed):
This is the Schematic & PCB artwork for a 2x120W PowerAmp:
Today Sergio from Mexico found an old documentation of a sequencer I made in 2007 for Piksel Festival. It contained several small errors, so here is the updated version of this nice 8-Step-Sequencer. It is simple but yet has some extra features. With a 150ohms resistor as current limiter. the sequencer can drive up to 20 milliamps to give pulsed electricity to filter circuits or toys.
Give it a try! Please NO commercialisation – especially of the gate circuit, which really works despite being so simple. Contact me if you need a custom extended version, there are several more astonishing tricks..
Here is a simple Parallel Port Programmer for Atmega Microcontrollers (Schematic & PCB):
A KiCad-Tutorial - KiCad is an open source software suite for electronic design automation (EDA) – designing schematics of electronic circuits and printed circuit boards (PCB). KiCad is developed by Jean-Pierre Charras, and features an integrated environment with schematic capture, bill of materials list, and PCB layout.:
A Triac Tester - Had to work on a dimmer pack recently, I used & want to share this:
*****
22 July 2011
15 May 2010
Workshops
Artist Statement about Electronic Workshops:
As more and more is known about the physical background, electronics turned into a science where devices are digitally simulated and calculated according to mathematical models.
Especially digital electronics with its binary states´ precisely defined 0 and 1, is -nobody wonders- either working or not working. For the majority of digital hardware that means: One wrong bit will break its operation. What we will make from digital chips is always working – but never exactly.
By definition states between 0 and 1 are not allowed. In digital electronic databooks these states are called “not defined” or “illegal”. They are not usable to build a reliable, predetermined, deterministic machine (e.g. a computer) which produces exact, reproducible output within its enviromental parameters (i.e. the computer is functioning).
This exactness is remarkable, yet doesn’t fit to our known physical laws.
Where is the Heisenberg uncertianty (http://en.wikipedia.org/wiki/Uncertainty_principle) of modern quantum physics which should make such precision impossible?
The answer is astonishing: Digital electronics use symbolic states outside the physical reality!
E.g. standard TTL logic gates (http://en.wikipedia.org/wiki/Logic_gate) operate with a 5 volt power supply. A TTL signal is defined as 0 or “low” when between 0V and 0.8V with respect to the ground terminal, and 1 or “high” when between 2.0V and 5V. States between 0.8V and 2.0V are “illegal”.
The experimental sound circuit SNU, which is the main device of the workshop, uses these illegal states and drives the digital chip it uses into this in-between world of uncertainty. What we get is complexity and uncontrollable behaviour. This workshop shows how building-blocks can be arranged in unusual ways. The SNU or the sequencer SEQ8 are just examples of how arrangements of the instruments can be build.
Not two of them will sound the same.
You get an alive instrument, different from a sampler that only controls premade sound. Like a violin, with many possibilities to create sound but also unpredictable moments, it requires constant judgement and adjustment of the player and at the same time has a live of its own.
or if you like..
Workshop Special Noise Unit (SNU)
„Einfluß statt Kontrolle“
Bei diesem Workshop erhalten die TeilnehmerInnen die Möglichkeit, experimentelle Synthesizer zu bauen, fantastische Noise-Maschinen. Jede ist anders, Gesetze werden auf den Kopf gestellt, IngenieurInnen kriegen die Krise & doch funktionieren sie:
Unkontrollierbar, launisch und eigentümlich wie nur wenige Instrumente.
Hier gibts reichlich Werkzeug, Lötkolben und Elektronikbauteile – Vorkenntnisse sind nicht nötig.
This is @ the tweak festival in Limerick:
The next seven video snippets are by Natalia Borissova, Munich curator & artist, learning to know the SNU:
Some of my own pieces where the main soundsource is a SNU – SNU-II-Soundtest uses the additional Seq8-sequencer, all the “Fulda” pieces have a delay & occasional ring-modulator added. “Heisenberg” has an additional sample of Werner Heisenberg speaking about quantum physics & a tanpura loop:
SNU-II-Soundtest 03.06.08, 04:02, 64kb, mono, mp3, 4.75mb
Fulda sucks 2009 21.08.09, 02:08, 256kb, stereo, mp3, 3.94mb
Fulda sucks 2009_2 21.08.09, 44:19, 256kb, stereo, mp3, 81,18mb
Fulda fuck off – Just listen to Heisenberg I 13.09.09, 47:09, VBR, stereo, mp3, 83,00mb 
The Text
This Thing is Fukking Speaking I – mastered 27.09.09, 06:08, 256kb, stereo, mp3, 11.25mb
Here is a sound test with a recently developed Ultrasonic device (+ a SEQ to modulate the new Ultrasonic-Transmitter):
This Spider Loves Ultrasonics 16.09.10, 04:27, VBR, stereo, mp3, 7,14mb
After the lame Intro here is the 1st Soundtest of the Ultrasonic Pulser we actually built:
Ultrasonic Pulser 1st Test 26.10.2010, 11:27, 96kb, mono, mp3, 7,87 mb
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