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by astroschnautzer
Wed Oct 02, 2019 10:54 am
Forum: Music Tech DIY
Topic: TWO59 VCO module (Building Thread) by FEEDBACK [UPDATE]
Replies: 136
Views: 14842

windspirit wrote:
1) Can't calibrate my VCO to 1v/o, when the trimmer is all the way open it is still too low of a range. Im guessing I can replace R2 with a lower value resistor to increase the range?
a faulty THAT chip was the problem for me... IIRC, it was a while ago I built this...
by astroschnautzer
Tue May 14, 2019 12:43 pm
Forum: Music Tech DIY
Topic: LPG --> bandpass, highpass response? multimode gate
Replies: 5
Views: 817

its a sallen key filter so basically you should be able to get high pass by swapping the place of the two resistors and capacitors in the filter circuit, this could be done with a switch. bandpass by just swapping one resistor with one cap IIRC. Google sallen key filter and check your lpg schematics...
by astroschnautzer
Thu Aug 23, 2018 8:13 am
Forum: Music Tech DIY
Topic: Phutney clone
Replies: 795
Views: 91300

my 18-0-18 transformer puts out 21-0-21 vac and after the rectifying it puts out +/-29.5 volts dc (should be +/-24.5 volts dc) and the fuses (located after secondary transformer output) keeps blowing after 5-10 minutes, is this too much for the fuses? it does regulate it to +12/-9 and the synth puts...
by astroschnautzer
Tue Jun 19, 2018 12:15 pm
Forum: Music Tech DIY
Topic: Phutney clone
Replies: 795
Views: 91300

Which Powersupply can be used here ? Or which can be modified ? Or complete DIY Powersupply? Complete DIY unregulated psu: http://www.phutney.com/TechnicalInfo/X_S1.pdf The "X" board will have the regulators on it if I understood correctly. Very easy, no breadboard needed, all can be done on a meta...
by astroschnautzer
Tue Jun 19, 2018 4:40 am
Forum: Music Tech DIY
Topic: Octave Cat VCO silent
Replies: 18
Views: 1025

The dip sockets and trimmers are also problems in the octave cats I have had, would advise to change all of them.
by astroschnautzer
Mon Jun 18, 2018 5:10 am
Forum: Music Tech DIY
Topic: Phutney clone
Replies: 795
Views: 91300

askthedust wrote:Anyone selling is clone? :party:
https://www.facebook.com/TheCloneyProject/
by astroschnautzer
Mon Jun 18, 2018 3:53 am
Forum: Music Tech DIY
Topic: Phutney clone
Replies: 795
Views: 91300

Damn there's a lot of coax in this build. Get a lot. I probably used close to 100 feet. I had a lot on a 100 ft roll left, used it up, bought a new one, and ended up using a lot of that also. You're going to get really good at handling coax during all this. I'm really anal about it, learned some tr...
by astroschnautzer
Sun Jun 17, 2018 8:07 am
Forum: Music Tech DIY
Topic: Phutney clone
Replies: 795
Views: 91300

Suggestions for good quality shielded wire for this project?
Manual says it needs:
-shielded single lead ( for wiring individual sensitive singnals)
-paired shielded leads ( for wiring internal circuit signals)

It seems that a lot of the wiring needs to be shielded.
by astroschnautzer
Mon Jun 11, 2018 8:34 am
Forum: Music Tech DIY
Topic: [closed] µDervish 8HP FV-1 FX
Replies: 158
Views: 18831

Intersted in a kit
by astroschnautzer
Thu May 31, 2018 3:24 pm
Forum: Music Tech DIY
Topic: TWO59 SHAPER (Building Thread) by FEEDBACK [PCB UPDATE]
Replies: 144
Views: 15959

Ah, that's interesting. Yes, my square works, but it's intermittent - maybe I'll try your "fix". the square buffer mod should fix that and the pitch change. This resistor mod only affected my problem with the square being never switched on. Had the same issue of sometimes not switching square on (w...
by astroschnautzer
Thu May 31, 2018 10:27 am
Forum: Music Tech DIY
Topic: TWO59 SHAPER (Building Thread) by FEEDBACK [PCB UPDATE]
Replies: 144
Views: 15959

I used 100R for R81, as per the build manual - I don't see where it says 100K for that. There is that one color coded picture showing where both the 100R and 100K's go on that board, and they're both red, so that's not really any help. https://www.muffwiggler.com/forum/userpix2/535_screen_shot_2018...
by astroschnautzer
Thu May 31, 2018 9:41 am
Forum: Music Tech DIY
Topic: TWO59 SHAPER (Building Thread) by FEEDBACK [PCB UPDATE]
Replies: 144
Views: 15959

r81. schematics and silkscreen says 100r, build instructions say 100k. With 100r square led will work but only outputs about 2v to the 4066 which apparently is not enough to switch it on so no sound. With 100k the led wont work but the 4066 will get almost 5v and it is enough to switch it on so soun...
by astroschnautzer
Tue May 01, 2018 12:47 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 806
Views: 60687

The value of the resistor added in series with the LED depends on the LED type. Try and test with other values and find the best compromise between brightness and bleeding. The LPG LEDs also cause some bleeding and a resistor can be added there as well. Both the Cincon and 211 are not linear but sw...
by astroschnautzer
Tue May 01, 2018 6:16 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 806
Views: 60687

Cool, will be troubleshooting tonight/tomorrow. I think the timbre is the only thing not working at all, the rest is fine besides needing trimming. One small thing I need to think about is that the led's from the pulser and the envelope still bleed through, even though I did the 10k mod as suggeste...
by astroschnautzer
Wed Jan 31, 2018 2:41 pm
Forum: Music Tech DIY
Topic: 218r Build Thread
Replies: 70
Views: 7460

Hi all! I two issues with my build: 1) when I switch the preset buttons the voltage out jumps to the last key 1 out of 30 times (not accurate). When pressing the last key the preset buttons sometimes switch as well. I‘be replaced ic5 and reflowed a lot. Anyone has an idea where to Thanks! I had the...
by astroschnautzer
Thu Jan 25, 2018 5:15 am
Forum: Eurorack Modules
Topic: Rossum Electro-Music Assimil8or
Replies: 1952
Views: 168509

Marco Alpert wrote:
oinkbanana wrote:I can't believe this is only 16 MB sample memory. Even the digitakt is 64.
Not sure where that came from. It’s over 400MB.
That is insane! :)
by astroschnautzer
Thu Jan 25, 2018 1:28 am
Forum: Eurorack Modules
Topic: Rossum Electro-Music Assimil8or
Replies: 1952
Views: 168509

oinkbanana wrote:I can't believe this is only 16 MB sample memory. Even the digitakt is 64.
thats almost a minute @ 24bit/48khz stereo. More atleast than I personally have ever used in a sampler.
by astroschnautzer
Tue Dec 19, 2017 10:24 am
Forum: Music Tech DIY
Topic: Build a buchla 208 rev2
Replies: 1049
Views: 82348

Dual vactrols work well for the lpg (card 10 & 11). No need for matching.


Image
by astroschnautzer
Sun Oct 08, 2017 3:36 am
Forum: Music Tech DIY
Topic: Buchla 208r V2.1 (Blue) Build Thread
Replies: 554
Views: 44125

I have a set of sliders if anybody wants. 60€ shipped in eu.

edit:Sold
by astroschnautzer
Thu Mar 30, 2017 1:23 pm
Forum: Music Tech DIY
Topic: TTSH Ver.3 (rev.8) General build thread
Replies: 2015
Views: 115159

I have soldered nearly all the parts on the board so I thought I am ready for some tests. Before I connected the PSU I measured the power bus for continuity on the big board and oh dear, beep, beep between V+ and 0 and also between V- and 0 and also between V+ and V- :sadbanana: There is a resistan...
by astroschnautzer
Wed Dec 14, 2016 11:12 am
Forum: Music Tech DIY
Topic: TTSH pcb/Panel interest check in 2016 - closed
Replies: 566
Views: 34636

please remember: payment is only possible with Mastercard or VISA Mastercard use the addional Secure Code. a Secure Code will be created by SMS/photoTAN/SecurePIN its not the CVV number from the card https://www.mastercard.us/en-us/consumers/payment-technologies/securecode.html i haven´t tested the...
by astroschnautzer
Mon Nov 07, 2016 4:47 am
Forum: Music Tech DIY
Topic: AVAILABLE - ROGAN knobs Group Buy !
Replies: 72
Views: 3431

Would be interested if it happens in the near future
by astroschnautzer
Mon Oct 17, 2016 6:16 am
Forum: Music Tech DIY
Topic: TWO59 COMPLEX VCO (by FEEDBACK)
Replies: 108
Views: 18289

interested in:
2x vco kit2
1x shaper kit2
by astroschnautzer
Sun Oct 16, 2016 1:11 pm
Forum: Music Tech DIY
Topic: TTSH pcb/Panel interest check in 2016 - closed
Replies: 566
Views: 34636

would take 1-2 pcb+panel+rareparts
by astroschnautzer
Wed Sep 28, 2016 6:05 am
Forum: Music Tech DIY
Topic: Build a buchla 208 rev2
Replies: 1049
Views: 82348

yan6 wrote:What does the buchla requre for a pulse to step the sequemcer or drive the pulsar
10v trigger , the buchla gate is a 5v gate with a 10v trigger at the beginning of the gate, so a combined gate/trig....

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