In anticipation of Ieaskul F. Mobenthey releasing the Fourses modules for Eurorack, here are paper circuits to construct three different kinds of this module. It is based on an olde olde concept that you may know from Ciat-Lonbarde in the kittennettik days.
the nobsrine is an electronic
musical instrument designed for babies. It uses just two knobs,
and an "on" switch to accomplish a wide range of simple, classic
electronic sounds. It does this by "sampling" the knob at each
turn, and also using the energy of the turn to control the amplitude of
two plus two triangle oscillators. It is for babies of DJs and
noise musicians, who want to introduce their children to strange
sounds, chaos magic, the idea of infinite degrees of relationship
between tones, without the more complicated techniques involved in uper
crust CIAT INSTRUMENTS.
Download the SHEET,
it with your own components.
Trade money, food, sound object, or interesting plant specimen to:
348 S Bentalou
Oh, PS, the "trim pots" are most
cheapest from mouser- part number 531-pt6kv-100k
Twig Harper plays a
ROllz-5 assemblage in custom
tube testor case with Matrix switch
Within his ROLLZ-5
sends these pix:
a Phosphate of Aluminum, and below is a Senior Grassi
Winowiecki sends these pix:
so much for all your work on the paper circuits
and others. I've been having a great time making them! Attached are
some picts of my latest builds: a mr. grassi that I put into an old
goodwill boombox because it already had two speakers! Painted it a nice
acid green. For some reason I keep thinking of him (it) as willie, as
in willie nelson. Must be the "grass" reference... Also a pict of my
Alum Phosphate Cyrstal. I used miniature tactile switches recessed and
layed out in a mostly ergonomic way. 10 buttons: 10 fingers/thumbs. I'm
finding that the value of the "x" resistors plays a big role in the
single button sound, especially with the outer ring of crosses, so I'm
going back in and tweaking things a bit. I may eventually cover this
with leather for an ambrazier "nipple" look.
more importantly, I/we have our own paper
circuit that we'd like to share with you as a contribution/tribute.
Rodrigo Constanzo was asking on a listserver if anyone could make him
an 8 step sequencer for use with his fourses/fyrall/etc. I got together
with him and designed this. We'd like to share it with you and offer it
to you to include with your other paper circuits if you see fit.
There's also a couple pictures of my finished prototype, with 12 ga.
copper wire for nodes and a maple branch knob for the speed control.
Thanks again so much for all the great info and music.
and Angie have a
grassi/rollz sweatshop going!!!
Manifestation of Phosphate of Aluminum, with Ultrasound filter from
I made a christmas tree ornament out of an old Mr. Grassi prototype,
with the paper dissolved, and mounted on thicker house wire.
is the greenriver gutterwedge. been using it
in performances with a volume pedal It shreds! Thank you for the
made this electro-lute out of four gerassic
organs and also a custom mod for pitchbend.
3rd-World-Made, Pier-1-Style Mr.
Grassis, with old-world-turned legs.
Wacker's Grassi Box
my implementation of MR GRASSI. It has
wooden boards for the top and bottom, then 2drilled speaker planks,
then cereal boxes for sides covered in papier mache
There is a new paper circui entitled
"ALUMINUM PHOSPHATE CRYSTAL SIMULATION". It is built based on concepts
from mr grassi and sidrassi. I recommend using one speaker and 10
buttons for the manifestation, each button connecting one node to the
"This paper circuit is a crystal
simulation of 5 aluminium atoms bonded to 1 phosphorus atom."
I offer an instrument
design to you for free, "The Lil
Sidrassi: a pentagram of primitive oscillators and a speaker". It is a
very touchable bee motorcycle sound maker box. Each one is different
because you put custom capacitor values in it. So I would please like
you to send me a description of yours and I will make a dictionary.
Download the instruction manual
, print out the assembly sheet and build it with your own components.
Send money food or sound object to:
348 S Bentalou
Jacobs didn't say how he made lil sid
clear, but I assume it is photocopy onto transparency.
Shawn @ sirkut.com says:
Now for the next part of my email. The Lil Sidrassi. I'm currently
putting 3 Lil Sidrassi's into a wooden box that my g/f and I put
together. It still needs sanding because I like using gorilla glue and
it oozes after drying but is hard as nails when dried. I let her design
the layout of the interface and I did all the circuitry of course. One
will be a treble sidrassi, another a bass sidrassi and lastly a chaos
sidrassi. Each have banana jacks so I can interface them without
alligator clips (i detest using them) and used the pins from a parallel
printer port for the contact pins. Then each sidrassi has 5 SPDT
switches (On/Off/On) so I can add additional dimensions to the sidrassi
hairy capacitors. The two links below are from the completed bass
sidrassi. Feel free to share on your site. Attached is a photo of the
triple sidrassi unit. I'm tentatively calling it the Triple Threat. Any
thoughts would be welcomed. Thanks again for a RAD free circuit. You
plan on doing anymore paper circuits?
say, yessir I am working on a larger one
right now called "Old Mr. Grassi" Pete
Here is a LIL SIDRASSI I put in a hardwood case with an antique dial
system to switch hairy capacitors for multiple frequency system.
FYI here is a pic of the inside wiring of that.
This is Chester's lil sid in sears garage door control case, wiring...