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mcop
Joined: Apr 27, 2012 Posts: 46 Location: Brighton UK
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Posted: Tue Dec 23, 2014 8:26 am Post subject:
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fonik wrote: | i still hope to do a set of PCBs for this |
Excellent |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Tue Dec 23, 2014 11:21 am Post subject:
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now that i think about it, we might better call it an arpeggiator... _________________
cheers,
matthias
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Big Boss at fonitronik
Tech Buddy at Random*Source |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Tue Dec 23, 2014 11:29 am Post subject:
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I have already had the measuring tape out to see if there is room on the wall of blue modular for another case heheh. |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Tue Jan 20, 2015 1:20 pm Post subject:
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_________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Sun Jan 25, 2015 7:54 am Post subject:
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Matthias.....
Got it powered up yesterday but had a little trouble with clocking to begin with.
I had a 5v square clock going in to the socket , no cycle , checked with scope nice square going into D1 , cut down by R3 (47K) into base of Q1 , collector outputting nice 0 - 5v square .
At the point where D2 & D8 & R12 join to clock in on 4024 the clock was up at nearly rail level clocking away, but not cycling the sequencer , for an experiment , I unhooked R67 from the +V and it started clocking normally , cool .
Rotary encoder , with this circuit disabled I tried hooking the return cable from the encoder, through a signal diode to the base of Q1 , it started working via that path , great .
Could I ask what the best way is, to set up the trimmers on the TL074's for the cv.
Thanks .
Dave. |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Sun Jan 25, 2015 10:53 am Post subject:
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Wow , this is so at home with Orchard & Epicyclus / skrog music
It's not calibrated yet but I've had 3 hrs fun jamming with it .
Using the sequencer I have been setting up the cv pots to pre-set tunings then using the A/B switches to bring in and out different cv layers.
Here is a thrown together mp3 with the binary sequencer cv into a mfos vco (1 squ/ 1 saw vcf / vca) , with the vca adsr gated from the main clock.
0 to 11 seconds , no switches on to cv mixer.
11 to 26 seconds ,only divide by 2 cv switched on to cv mixer.
26 to 43 seconds , /2 & /4 on.
43 to 1:05 , /2 & /4 & /16 on.
1:05 to 1:17 , /2 , /4 , /16 & /32 on.
1:17 to 1:49 , /2 , /4 , /16 , /32 , /64 on. Almost a classic Nik Kershaw melody, excellent! .
Dave.
Description: |
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Binary sequencer & new yellow drum synth.mp3 |
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5.95 MB |
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1021 Time(s) |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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varice
Joined: Dec 29, 2004 Posts: 961 Location: Northeastern shore of Toledo Bend
Audio files: 29
G2 patch files: 54
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Posted: Mon Jan 26, 2015 10:25 am Post subject:
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Skrog Productions wrote: | ...Using the sequencer I have been setting up the cv pots to pre-set tunings then using the A/B switches to bring in and out different cv layers.
Here is a thrown together mp3 with the binary sequencer... |
Nice demo track of this sequencer And your new yellow drum synth sounds pretty damn good too _________________ varice |
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Tue Jan 27, 2015 2:34 pm Post subject:
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Skrog Productions wrote: | Matthias.....
Got it powered up yesterday but had a little trouble with clocking to begin with.
I had a 5v square clock going in to the socket , no cycle , checked with scope nice square going into D1 , cut down by R3 (47K) into base of Q1 , collector outputting nice 0 - 5v square .
At the point where D2 & D8 & R12 join to clock in on 4024 the clock was up at nearly rail level clocking away, but not cycling the sequencer , for an experiment , I unhooked R67 from the +V and it started clocking normally , cool .
Rotary encoder , with this circuit disabled I tried hooking the return cable from the encoder, through a signal diode to the base of Q1 , it started working via that path , great .
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good find, and a good move! i just doulbed the clock circuitry for both the actual clock input and the rotary encoder, which is nonsense obviously. the pull-up resistor of either the clock or the ncoder ciruitry would keep the the CMOS from counting, haha.
well done, you!
Quote: | Could I ask what the best way is, to set up the trimmers on the TL074's for the cv. |
T1 through T7 are to trimm the attenuverters to 0V at center position of the pot. these trimmers are only needed when using push on knobs. when using knobs with a set-screw you could 'calibrate' just by putting the know into the correct position.
and now i am going to listen to your demo! _________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Tue Jan 27, 2015 2:37 pm Post subject:
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ha, great demo! and that's only one channel/VCO... i am looking forward to a dual VCO two channel demo, dave! _________________
cheers,
matthias
____________
Big Boss at fonitronik
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Tue Jan 27, 2015 2:38 pm Post subject:
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i will correct the schematic ASAP. summing the clock and the encoder before the inverting transistor is the right thing to do in this case. _________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Tue Jan 27, 2015 3:50 pm Post subject:
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varice wrote: |
Nice demo track of this sequencer And your new yellow drum synth sounds pretty damn good too |
Thanks |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Tue Jan 27, 2015 4:00 pm Post subject:
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fonik wrote: |
T1 through T7 are to trimm the attenuverters to 0V at center position of the pot. these trimmers are only needed when using push on knobs. when using knobs with a set-screw you could 'calibrate' just by putting the know into the correct position.
and now i am going to listen to your demo! |
Ah thanks Matthias , I used splined shaft push on knobs , cool ,......... Just been at workbench and tried trimmers , I'am powering this using +/- 12V, the trimmers didn't quite allow the zeroing to adjust 0V to center knob position , tried a 33K in place of the 100K feedback R on the attenuverter , cool , can adjust to 0V center pot.
-10v to the left and +10v to the right and 0V in the middle , will change the other 6 to 33K as well (even number resistors R70 to R82) .
many thanks for your help, Matthias.
Dave. Last edited by Skrog Productions on Tue Jan 27, 2015 4:10 pm; edited 1 time in total |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Tue Jan 27, 2015 4:04 pm Post subject:
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fonik wrote: | ha, great demo! and that's only one channel/VCO... i am looking forward to a dual VCO two channel demo, dave! |
Thanks , i'll get to work on a double vco / vcf / vca per channel demo in a few nights
Dave. |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Sat Jan 31, 2015 4:08 am Post subject:
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since this new version is bi-polar you could use the external inputs for audio as well.
will listen to your demo tonight. _________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Sat Jan 31, 2015 4:13 am Post subject:
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Modification ..........
If you are going to use the binary module only for filter cv's & as a modulation source only , ignore this post....
While trying the module out in the modular system and jamming away , using the attenuverters to set the tunings for my vco / vco's , I found the voltage swing of 10volts of the pots to be too big for the lower division steps, so to try to customise the module for my usual melodic synth music , I had a play about with changing the sweep of the pots , after much experimenting I went for this....
I disconnected the 2 outer pot connections on all 7 stages ( leaving the middle wiper wire still connected) , and put a same value resistor in series of each connection .
/2 pot with 91K & 91K about 2.5 octaves swing +/- on vco.
/4 pot with 91K & 91K.
/8 pot with 120K & 120K about 1.5 octaves swing +/- on vco.
/16 pot with 120K & 120K.
/32 pot with 120K & 120K.
/64 pot with 200K & 200K about 1 octaves swing +/- on vco.
/128 pot with 200K & 200K.
Then re-calibrated the zero trimmers for the new pot travels .
Here is another test mp3 with a vco & vca on each output, bass line melody first then 2nd melody fades in ,with a bit of echo half way through & yellow drum synth doing some beats.
Description: |
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Download |
Filename: |
binary seq 2 vco's 2 vca's delay & drumsynth-01.mp3 |
Filesize: |
4.44 MB |
Downloaded: |
974 Time(s) |
Last edited by Skrog Productions on Sat Jan 31, 2015 7:05 am; edited 1 time in total |
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Sat Jan 31, 2015 6:22 am Post subject:
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Skrog Productions wrote: | I disconnected the 2 outer pot connections on all 7 stages ( leaving the middle wiper wire still connected) , and put a same value resistor in series of each connection .
/2 pot with 91K & 91K about 2.5 octaves swing +/- on vco.
/4 pot with 91K & 91K.
/8 pot with 120K & 120K about 1.5 octaves swing +/- on vco.
/16 pot with 120K & 120K.
/32 pot with 120K & 120K.
/64 pot with 200K & 200K about 1 octaves swing +/- on vco.
/128 pot with 200K & 200K. |
geat idea.
all CV will add up, so lowering the range of the higher divisions pots is a unique and great idea! wow.
it is nice to see that you have fun to play with the module and develop it further to your needs... _________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source Last edited by fonik on Sat Jan 31, 2015 1:34 pm; edited 1 time in total |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
Audio files: 705
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wackelpeter
Joined: May 05, 2013 Posts: 461 Location: germany
Audio files: 10
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Posted: Sat Jan 31, 2015 2:34 pm Post subject:
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indeed very nice demo... should put this too on my do list...
are the percussive sounds are all from your diy drum machine? if so... wow!!
sounds very charming. _________________ https://soundcloud.com/bastian-j |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Sun Feb 01, 2015 4:15 am Post subject:
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fonik wrote: | since this new version is bi-polar you could use the external inputs for audio as well.
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I have not tried audio yet , i'll have a go through the week |
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