[sdiy] Winding up Latest Project...

[James Patchell]

         I am getting pretty excited...I am winding up my latest synth 
project, and it looks like I am going to meet all of my goals.  The biggest 
goal was to do a synth that only takes about 40 hours to build (this does 
not include any NRE such as drawing schematics, laying out PC boards, 
fixing mistakes on the PC boards, but only the time needed every time I 
build one)...

         I am still in the process of editing the photos I have taken of 
it.  It is probably the cleanest modular I have ever built...there are only 
9 wires in the whole thing (wires that I had to solder between two points 
that is).  Wiring has always been a major time consumer for me.

         I still have to finish writing the code for the MIDI->CV 
converter.  I thought I might get that done today, but, only have it half 
done.  At least I got to the point where the card is parsing the midi 
data.  I just need to write the code that runs the S/H unit for the 
DAC.  The Midi->CV converter uses an Atmel AT90S8515....soon to be changed 
to an ATMEGA8515...:-), the code is being written with the Image Craft 
IccAVR compiler.

         Here is the complement of modules:
         3 VCOs
         3 Multimode (SV) Filters
         2 4 in 1 out mixers
         2 ADSRs
         2 LFOs (Triangle/Square)
         1 Divider (2-3-4)
         1 32 bit psuedo random noise generator
         3 Diode wave shapers (2 break points each)
         3 CV processors (Gain/Offset)
         2 VCAs
         1 Glide
         1 Balanced Modulator
         1 Midi->CV converter (8 gates/8 CVs) with Start/Stop, Reset and 
Midi Clock outputs

         Also, on some of the modules that I knew would be going multiple 
places, I have multiple outputs (usually 3).  It seemed like a good way to 
do "multiples" and it saves one jack position (there are two 4 jack 
multiples on the panel as well).

         -Jim
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I'm a man
But I can change
If I have to
I guess.

Man's Prayer
Red Green

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http://www.oldcrows.net/~patchell

http://members.cox.net/patchell

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