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| Search found 23 matches |
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| Page 1 of 1 [23 Posts] |
| Author | Message |
|---|---|
 Topic: ADSR V2 Sustain Always High |
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| Rolbista Replies: 8 Views: 9657 |
Posted: Sun Jan 04, 2015 8:36 am Subject:
ADSR V2 Sustain Always High
Forum: DIY Hardware and Software » YuSynth |
| Hi, I see this thread is now 2 years old, but I seem to have similar problem - attack and release work fine but decay and sustain are always at max no matter the settings (actually I don't know about ... | |
| Topic: Microcontroller/Arduino CV keyboard/sound source |
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| Rolbista Replies: 0 Views: 5932 |
Posted: Fri Nov 28, 2014 11:43 am Subject:
Microcontroller/Arduino CV keyboard/sound source
Subject description: First foray into the land of MCUs Forum: DIY Hardware and Software » Microcontrollers and Programmable Logic |
| Hi guys. In my work I try to merge circuit bending, upcycling and real synth DIY to construct fully (well not really but more on that later) musically viable instruments out of otherwise useless keybo ... | |
| Topic: LM331 freq to volt chip?? |
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| Rolbista Replies: 21 Views: 14350 |
Posted: Wed Jun 25, 2014 7:08 am Subject:
Filter
Forum: DIY Hardware and Software |
| Do you think that this chip would be good enough for tracking pitch of a keyboard (with a pretty steady singnal processed with a comparator) so that VCF's cutoff follows note played? | |
| Topic: Sallen Key vactrol filter values |
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| Rolbista Replies: 4 Views: 4869 |
Posted: Mon May 20, 2013 12:32 pm Subject:
Sallen Key vactrol filter values
Forum: DIY Hardware and Software » Developers' Corner |
| yes, the schematic from your link is what I used, first I had a 100k in the place you mention, but after it didn't react much i soldered a 10k resistor in parallel to the 100k, still, the response did ... | |
| Topic: Sallen Key vactrol filter values |
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| Rolbista Replies: 4 Views: 4869 |
Posted: Mon May 20, 2013 8:31 am Subject:
Sallen Key vactrol filter values
Forum: DIY Hardware and Software » Developers' Corner |
| I'm afraid I ditched the Steiner completely in favor of a state variable 12 dB filter. I left the Buchla driver and it works as far as the cutoff knob is concerned but it hardly reacts to external CV ... | |
| Topic: Bending a Casio SA-65 and 3/4 of a synth |
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| Rolbista Replies: 9 Views: 11183 |
Posted: Fri May 17, 2013 9:55 am Subject:
failure and shame
Forum: DIY Hardware and Software » Circuit Bending |
| well, I wasn't able to get the EG to work, I guess I must have messed up the wiring but got a little lost in it and couldn't troubleshoot it. The VCAs never worked, all I got from it was the filter (w ... | |
| Topic: Sallen Key vactrol filter values |
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| Rolbista Replies: 4 Views: 4869 |
Posted: Tue Apr 16, 2013 5:24 am Subject:
Sallen Key vactrol filter values
Forum: DIY Hardware and Software » Developers' Corner |
| Ok, so after some fighting with a Steiner filter I decided to give up and just put together a Sallen Key and add vactrols for cutoff. I'm using the schematic form doepfer site: http://www.doepfer.de/a ... | |
| Topic: Square wave to sawtooth converter |
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| Rolbista Replies: 9 Views: 22234 |
Posted: Wed Mar 06, 2013 9:52 am Subject:
Square wave to sawtooth converter
Forum: DIY Hardware and Software » Developers' Corner |
| Ok, tried the 4046/4024 circuit and it works. The output is more of a "sawtoothoid" really, kinda looks like a reversed ADSR symbol. When I play legato it keeps the shape, but when I play se ... | |
| Topic: Square wave to sawtooth converter |
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| Rolbista Replies: 9 Views: 22234 |
Posted: Fri Mar 01, 2013 1:34 pm Subject:
Square wave to sawtooth converter
Forum: DIY Hardware and Software » Developers' Corner |
| Grant Richter from Wiard gets a ramp wave directly from the capacitor of the 4046 in his WoggleBug. I believe he credits someone else with the idea. Google for the schematic.
http://pugix.com/syn ... |
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| Topic: "Oscillators" for circuit bent machines? |
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| Rolbista Replies: 2 Views: 7303 |
Posted: Tue Feb 19, 2013 10:20 am Subject:
"Oscillators" for circuit bent machines?
Forum: DIY Hardware and Software » Circuit Bending |
Thanks for the reply! Yeah, that's why I put "VCO" in quotes  . So paired with a preamp stage, the circuit you posted in the first link should output a square wave of the same frequency as ... |
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| Topic: "Oscillators" for circuit bent machines? |
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| Rolbista Replies: 2 Views: 7303 |
Posted: Sun Feb 03, 2013 1:43 pm Subject:
"Oscillators" for circuit bent machines?
Forum: DIY Hardware and Software » Circuit Bending |
| Ok, so here's a concept: take the most sinusoidal waveform of your bent keyboard and filter it a little to remove harmonics. Step 2: convert it to a square wave with a Schmitt trigger - here's your fi ... | |
| Topic: Music from OS Signal to gate converter. |
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| Rolbista Replies: 14 Views: 8610 |
Posted: Sat Jan 19, 2013 11:37 am Subject:
Music from OS Signal to gate converter.
Forum: DIY Hardware and Software |
| The link at the top of the thread is dead, does someone have project files for this signal to gate converter? I'm currently bending a Casio keyboard, and all I have is the output signal, so if I could ... | |
| Topic: Bending a Casio SA-65 and 3/4 of a synth |
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| Rolbista Replies: 9 Views: 11183 |
Posted: Fri Jan 18, 2013 12:52 pm Subject:
Bending a Casio SA-65 and 3/4 of a synth
Forum: DIY Hardware and Software » Circuit Bending |
| well, i tried a cap on the input and I also measured the rectified signal without amplification but still there is constant voltage, around 1,5V whether the key is pressed or not, so i guess I'll have ... | |
| Topic: Bending a Casio SA-65 and 3/4 of a synth |
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| Rolbista Replies: 9 Views: 11183 |
Posted: Thu Jan 17, 2013 5:15 pm Subject:
Bending a Casio SA-65 and 3/4 of a synth
Forum: DIY Hardware and Software » Circuit Bending |
| now i looked at some Schmitt trigger circuits, and maybe it would be a lot less fuss to just set it to be activated by the signal of certain level and output 5V when output is high and 0V when low. An ... | |
| Topic: Bending a Casio SA-65 and 3/4 of a synth |
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| Rolbista Replies: 9 Views: 11183 |
Posted: Thu Jan 17, 2013 4:00 pm Subject:
Bending a Casio SA-65 and 3/4 of a synth
Forum: DIY Hardware and Software » Circuit Bending |
| you mean a capacitor after the op amp? I want DC on the output, I 'm not so sure i understand correctly how gate works, so far, I thought that as long as the gate is on (5V), the envelope is going on ... | |
| Topic: Bending a Casio SA-65 and 3/4 of a synth |
|
| Rolbista Replies: 9 Views: 11183 |
Posted: Thu Jan 17, 2013 2:28 pm Subject:
Bending a Casio SA-65 and 3/4 of a synth
Forum: DIY Hardware and Software » Circuit Bending |
| Hello, I got this little SA-65 that I wanted to bend into a synth and plug it into a few modules that I have like a VCO and ADSR. The problem is Gate, I don't have any CV keyboard or anything, so i ho ... | |
| Topic: Keyboard for DIY synth? |
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| Rolbista Replies: 10 Views: 28875 |
Posted: Thu Dec 20, 2012 2:56 pm Subject:
cv/gate
Forum: DIY Hardware and Software » Musical Interfaces |
| hello, I figured I'd ask in this thread instead of making new one. I'd like to add primitive CV/gate output to my little Casio keyboard for controlling the filter and gating the ADSR module. Do you ha ... | |
| Topic: CEM3391 and what to do with it? |
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| Rolbista Replies: 0 Views: 2778 |
Posted: Mon Dec 10, 2012 3:14 am Subject:
CEM3391 and what to do with it?
Forum: DIY Hardware and Software |
| Hey all, recently I scored an old Hohner PK-250 MIDI for cheap. I hoped to mod it like shown on this site: http://legoluft.dyndns.org/tech/repairs/e-pk-250.html but the the sound pretty much sucks and ... | |
| Topic: Simple LFO schematic, opinions? |
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| Rolbista Replies: 53 Views: 118703 |
Posted: Fri Dec 07, 2012 8:36 am Subject:
Simple LFO schematic, opinions?
Forum: DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta |
| ok, i'll try that, one more thing, I'm currently using a switching transistor with an LED for a rate indicator, but could i just put an LED in parallel with whatever i'm modulating with the LFO? stick ... | |
| Topic: Simple LFO schematic, opinions? |
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| Rolbista Replies: 53 Views: 118703 |
Posted: Thu Dec 06, 2012 2:10 pm Subject:
Simple LFO schematic, opinions?
Forum: DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta |
| says here: https://sites.google.com/site/flofxdiy/deticking-lfo that I should put a cap to ground from the power supply and a 100ohm resistor from V+ to power pin on the chip to let the cap accumulate ... | |
| Topic: Simple LFO schematic, opinions? |
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| Rolbista Replies: 53 Views: 118703 |
Posted: Wed Dec 05, 2012 2:57 pm Subject:
Simple LFO schematic, opinions?
Forum: DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta |
| OK, I know it's a terrible sin to necropost, but I'm having some problems with the 4069 LFO. Works, I put both waveforms on a switch, but I get pretty loud ticking, as if it bled through to the signal ... | |
| Topic: Most simple VCF on earth |
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| Rolbista Replies: 48 Views: 163611 |
Posted: Thu Nov 29, 2012 2:11 pm Subject:
Most simple VCF on earth
Forum: DIY Hardware and Software » Developers' Corner |
| op amp - TL071cn , i used normal guitar cables and a small guitar amp. In the meantime I tried it during a band practice, and we are so loud we barely hear that noise. It would be nice however, to hav ... | |
| Topic: Most simple VCF on earth |
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| Rolbista Replies: 48 Views: 163611 |
Posted: Sat Nov 17, 2012 7:26 am Subject:
VCF noise?
Subject description: noisy output Forum: DIY Hardware and Software » Developers' Corner |
| Hey all, first post here, slapped this VCF together and works quite nice, but i have a problem with hiss and noise with cutoff and resonance set low (as in, cutoff completely open, and minimal resona ... | |
| Page 1 of 1 [23 Posts] |
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