These are my build notes for the nonlinear circuits LDRama module.
tHIS eurorack 28HP light sensor module was designed upon suggestions from Alex Brunori.
The idea is to play a video (or skype or whatever is the newest thing) fullscreen on your phone and place the phone on the LDR array. The module will generate CVs in response to what is happening in your video.
I've got a Arduino controlled LED project in the works, and I'd like to see if I can do something interesting with the two.
It is designed to suit a typical 5x2 inch screen, larger screens work fine tho some info around the edges is lost. Ideally the module will sit flat, if on an angle patch-cords into the top row of jacks hold it up very nicely
You can also patch in an external signal, such as a CV from a sequencer, and process this thru the LDRs.
CD4040 clock divider's outputs feed the four binary inputs of a CD4028 BCD to Decimal converting chip, creating pseudo-random sequences, depending on different CD4040 outputs feeding different CD4028 BCD inputs.
"The circuit can be easily modified by replacing
the two 4070 XOR chips with two 4081 AND chips (or any other 4 channel
two input logic chip – OR, NAND, XNOR, NOR). I might Build both versions ....the one-gate-at-a-time version tends to get a much
faster clock signal" (Andrew F).
These are my build notes for the Nonlinear Circuits CMOSC module
Its a eurorack format module.
CMOSC is an updated version of the
4U CMOSC (CMOS drone Oscillator).
Each module has 6 oscillators; the frequency of each
oscillator can be set with the pots. Feeding a signal to
input will decide which oscillator signal will appear at the output. If the signal is low, oscillator A is heard, if the
signal is high oscillator B is heard.
This module gets very interesting when the outputs of each oscillator pair are fed into other pairs, which are themselves controlled by others and so on…..complex, evolving drones. Put
patchcords into every jack so every pair is controlled by another pair, listen to one of the outputs, twiddle the knobs until you feel satisfied.
The sync input actually disables the oscillators, the unmarked output is a sync output…or if you like; it goes high when the oscillators are disabled. It is most interesting to put an audio signal into the sync input, preferably from the other CMOSC module
The Eurorack CMOSC also consists of 6 oscillators.
each can be switched between two frequencies set by a single pot. When the pot is in the mid-point the two frequencies are about the same. Turn the pot to min or max to switch between higher and lower frequencies, or lower and higher.
It's a gated oscillator.
Meaning Each oscillator controls the switching of its subsequent neighbour
(1-2, 2-3, 3-4, 4-5, 5-6, 6-1) via the switching pins of the input jacks.
Patching in a signal will break this cacophony and allow you to have some control over proceedings.