another atari discovery...

[jamiewoody]

i discovered, while breadboarding an atari punk console, more simple circuit, with only 1 or 2 pots...adding a diode makes the cutoff rate faster, and the tones are even MORE 8 bit video game like!

[jamiewoody]

these things are fun and easy!  i also learned how to build two of these onto one circuit! it sounds SICK!

as fun as these are, i feel like i need to learn something new....

[noystoise]

good for you. have you ever heard of lunetta synths? i think you'll find them pretty interesting. go here, read this...
https://docs.google.com/Doc?docid=0AZIwOP-PR9sSZDlidzgzbV8wY3RjenJqanY&hl=en

[jamiewoody]

i think i like making simple 555 based synths better. i followed the logic of the pins, after reading data sheet...and made on on a breadboard.i like the sound of the sweep!

there are so many possibilities. i have been messing with different resistance values, pots etc. though i have too much to learn, i feel much more intuitive about making these now!

on the link...it was blank. ? is this basically a simple synth using photo resistors? i have ONE photo resistor, which i have been playing with...i am dying to make a hands free "theramin" like synth with these! ;-)

[Circuitbenders]

that link works fine for me.

Lunetta is the generic name for a vast kind of open source  synth using CMOS logic IC's to create modules.

As is says on that link:

-Some people see it as the next step after circuit bending.
-Some people call it the next step after building the Atari Punk Console
-Some people see them as crazy gate sequencers
-Some people use the digital data and convert it to analog to run VCOs. (Voltage controlled oscilaltors)
-I call it the first step into DIY synth addiction.

[jamiewoody]

you know. i have been trying to make sense out of the pins on schmitt triggers, and for some reason, i cannot find anything i can understand.

my method (so far, self taught) has been:

i started with an atari punk, then designing like crazy based on 556 timers.

lately, i have been designing around 555 timers, which i like.  the way i learned how to use a 555 timer, was NOT copying a schematic, or wiring a circuit using a photo i found onling. but, i read the data on 556 timers, and read the data on 555s, and followed the logic of the pins (voltage in, output, etc).

what i am struggling with on schmitt triggers is that the pins do not resemble that of a 555 or 556. (i know, i need some physics, etc).

[Matt the Modulator]

were abouts did you add the diode ! james

[jamiewoody]

between pins 11 & 12 on the 556. the stripe tward 11.