programmer

i am getting a little nervous about how cramped i have made my cgs programmer layout. after discussing with people on muffwiggler how their designs were too compact and how they should always give pots room to be tweaked i have gone and made a super cramped module.

it is somewhat amusing. after studying population studies at uni i am noticing my synth designs growing in density proportionally to the decline in available space. i think i have breached the carrying capacity of design space and am on a road to disaster.

nevertheless i want more!!! and in less space. yes that is how it goes and ill stick to it. may as well be consistent and not listen to any logical information telling me that perhaps im pushing it a little too far and should be take on sustainable design. blah blah blah. :)

more!

luckily the panel components JUST fit onto the panel. i am going to have to cut off the lugs on the pots and solder to the pot itself in order for the pots not to short on their neighbour pots. this also means for once i am going to have to drill the panel with precision.




My Source of Uncertainty Module is pretty much fully working now, though i havent got the Chaquo pcb yet. I found some problems with my build of the SOU and a couple on the pcb designs. I just need to solve a little issue in the QRV module but it is functioning only both outputs are N+1. The FRV circuit is sensational. I am yet to test SRV and QRV in situ but hope to this weekend.

But now it is time to get out of my studio and go be social, spend time with family and do some partying with friends.

this is the end (i think), well almost

it has come to the time when im planning the last modules to go into my case
there will be no more expansion. since i set myself a limit of modules i have found as i have gone along that the density of my modules is increasing. im trying to cram as much in as possible :)

here are some of the last things to go into my machine

cgs programmer sequencer 8 step 3U panel



i am really keen on having a programmer as id like to be able to generate chords on my modular. i also really like it how it has gate outs on each stage. this will be good for making complex sequencers with my other sequencers and seq switches.

modulo magic / wave multiplier / plague bearer



this is a redesign of my old wave mult panel which had a ring mod inside it. i really just didnt click with the ring mod. im giving up the lockhart and grinder to have a modulo magic and plague bearer. i hope the modulo sounds good. there is no information on this module anywhere.

dual vcs (DUSG) w/ analog logic



I like the buchla quad function generator and how it uses OR gates to construct complex envelopes. I was going to build a vc-adsr but that just seems somewhat limited in function in comparison to 2 x vc-AR circuits with OR logic. VCS does so many other things too. I look forward to this module.

Gated Comparator / Gate Delay



Continuing with the sequencer theme here is the gated comp. It is a wacky one that is for sure. I added some yusynth gate delays in there too. I realised once i started sequencing on my klee that it was all a bit stiff. This should allow some loose grooves to be created. This rounds up my control section also. I think i have a lot of bases covered between Analog Computer, Gated Comparator, Gate Delays, Quadrature Lfos, Klee, Seq Switches, Progammer & Lfos.

There is only a few more spaces after this. Im probably going to ditch my lfos once all my AR generators are done. This will free up 4U. I am going to redesign my FS1 panel to include the ring mods. I also am going to add in a mixer panel. Then i think i have 2U left over. So it will probably be some more filters or wave mults or perhaps some time based modules like phasers / delays. No point planning too much. Lots of building ahead.

Btw, my FRV board is finished :) Waiting on parts to finish my SRV and QRV.

Uncertainty - Buchla SOU Build

Lots of it unfortunately as I'm having some problems getting these working

I had these populated boards floating about in my studio for a few months before assembling the module. I hope that i havent zapped the CMOS IC while haphazardly moving them from pile to pile. I should be more careful with these things. Hopefully i can work out the problems reasonable quick

The 555 timers in the FRV dont seem to be responding to the manual control which uses a vactrol to vary the RC timing circuit. It seems to pulse about every 12 seconds with no variance.
Frustrating problem as i can't work out where the problem lies.

The QRV board is waiting on some 4006s. I had a 4066 installed accidentally. Luckily someone came to my rescue as they are really hard to find these days. Thanks Tom.

SRV is somewhat functioning but i question the output so it might need a few tweaks.

These are definitely the most involved boards that ive had to etch and populate so I guess that assuming that these would come together really easily was wishful thinking. The etch of the pcbs and population looks super clean so I can only assume that there is some component failures.

frac + cv processor

have been a bit busy of late but managed to get some things done in my spare time
i have almost finished the 2nd side of my PD-vclfo, so much wiring in that thing

I also made the panel for my 2 fonik attenuverters and a buffered mult which i will make on veroboard. i am going to mod the attenuverters so they have a 5v injection instead of 7.5. i think i might use a 5v regulator to do that. im going to use some of my lt1013s inside foniks pcbs as they are meant to be closer to rail-rail.



i also made a temporary rack for my growing number of frac modules
i almost bought more today. this module buisness is addictive :/ old news i guess

for sale

evolver desktop aus$550
allenheath zed420 $1250

the sandwidge (cgs / buchla analog computer)

here is the latest build.. well actually i finished 2 of my 3 thru-zero vcos as well

this is probably the most dense i have had to stack pcbs so i'm taking a photo

this is my version of the bridechamber cgs analog computer, i just added a random gate source based on the buchla music easle (208 module). the cgs stuff includes a bunch of logic (and,or,xor,nxor), comparators, inverters, analog shift register and pulse divider.

my etch of the 208 was slightly too small so unfortunately i'll have to do it again. due to it being sandwidged under the analog shift register i needed to replace it before i started to wire up the asr. the logic and pulse dividers are all wired and working

happy days

up for trade

oversupply:


SSM2220 (5)
LM358 (5)
5532 (5)
LT013(5)
CA3046(2)
LF444(2)
MC1458(4)
LM13600(5)
CA3280(4)
OP2134(4)

fonik attenuverter pcb (1)




need:
white davis 1900 clone knobs (10)
LM741
10turn 10k pot