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2012-03-16 by adematteo
Thanks Ken,I'll give that a shot. Yeah,the cap on the smd didn't seem to make any difference concerning the noise. --- In cgs_synth@yahoogroups.com , "cg_synth" wrote: > > Run it's power wires back to the PSU itself, not to the local distribution point. It is a common VCO problem
2012-03-16 by Romeo Fahl
Also, make sure that your power supply can source enough current. If you start disconnecting modules from it, does the Bi-N-Tic noise decrease in the still connected modules? RF On Fri, Mar 16, 2012 at 2:52 PM, adematteo adematteo@... > wrote: > ** > > > Hi guys, > I recently bui
2012-03-16 by cg_synth
Run it's power wires back to the PSU itself, not to the local distribution point. It is a common VCO problem associated with the resistance of the wires themselves. The SMD pads would be for 100n, as per what you did. They were probably added as an optional afterthought. It was a
2012-03-16 by adematteo
Hi guys, I recently built the bi n tic and am having some issues with it regarding noise from it's osc. coming through other modules from the bus i presume.I've installed all the ferite's and caps that Ken suggests and although i couldn't find any documentation regarding the smd
2012-02-26 by Kyle Stephens
Haha, will do sir :) _Kyle --- On Sat, 2/25/12, sasami@... sasami@... > wrote: From: sasami@... sasami@... > Subject: Re: [cgs_synth] Re: CGS114 are back in stock To: cgs_synth@yahoogroups.com Date: Saturday, February 25, 2012, 5:24 PM Try it and see! I am not a theorietical geni
2012-02-26 by sasami@hotkey.net.au
Try it and see! I am not a theorietical genius! >Actually, if one shorted out the 22n cap on the integrator/put a resistor in its place, wouldn't it basically allow for variable gain as >an all pass filter instead of a low pass one? > > >The thought of it being a universal module
2012-02-25 by Kyle Stephens
Actually, if one shorted out the 22n cap on the integrator/put a resistor in its place, wouldn't it basically allow for variable gain as an all pass filter instead of a low pass one? The thought of it being a universal module is interesting alright. Or back to the drawing board f
2012-02-25 by Rico Loverde
Def agree with Mongo on this one. Ive built 3 DUSG in the last few months. They are such an amazing module. So much fun.. heres a couple quick videos of them in action http://www.youtube.com/watch?v=rPIiraFwavA&list=UU1y5XHRwlA2wuyPOD77N4Rg&index=1&feature=plcp http://www.youtube
2012-02-25 by Richarius Molindarius
I fully agree. A VCA function as well and that's all u'd need to imitate all basic functions with more than one. :) Will be ordering my next 4 usgs asap. On 2012-02-25 12:16 PM, "Mongo" zathrus1@... > wrote: ** Cool! For those of you who haven't built one of these, this is positi
2012-02-25 by Mongo
Cool! For those of you who haven't built one of these, this is positively the best module in my system. You can do just about anything with it. If it had a VCA in it you could just about build an entire synth just from these. Gary --- In cgs_synth@yahoogroups.com , "cg_synth" wro
2012-02-25 by cg_synth
CGS114 DUSGs are back in stock. Ken
2012-02-11 by cg_synth
--- In cgs_synth@yahoogroups.com , "msprigings2" wrote: > > on mouser I can't find an exact 4k7 400mw zener. Would a 500mw due? > A 4V7 500mW zener will do.
2012-02-11 by msprigings2
on mouser I can't find an exact 4k7 400mw zener. Would a 500mw due?
2012-02-01 by sasami@hotkey.net.au
A track is missing from this PCB. Please see the updated article for further details. http://www.cgs.synth.net/modules/cgs29_wave_multiplier.html _______________________________________________________________________ Ken Stone sasami@... otherunicorn@... Modular Synth PCBs for s
2012-01-29 by ch1nard
--- In cgs_synth@yahoogroups.com , sasami@... wrote: > > >When i measure the output of CPO it goes from 111mv to 201mv when the > button is pushed which is obviously not high enough to trigger anything. > >Any suggestions on what areas to check in the CPO circuit would be much >
2012-01-29 by sasami@hotkey.net.au
>When i measure the output of CPO it goes from 111mv to 201mv when the button is pushed which is obviously not high enough to trigger anything. >Any suggestions on what areas to check in the CPO circuit would be much appreciated :0 A meter won't help because it only PULSES. The p
2012-01-29 by ch1nard
It was a big pain to swap these out after everything was mounted and wired but i did it and now all the buttony-buttons work. Now to try to figure out why CPO and AEP doesnt work. I'll focus on CPO for now since i'm not really sure what AEP is supposed to do. (i'll do some readin
2012-01-27 by grayz4sure
That makes sense, two of them, All the devices would normally work off of the same pedal, only I do not want to have 4 identical Expression pedals (Roland ev-7), but one 10k Pot. I am forwarding all of the suggestions to the engineer of the project, I am just a concept guy who kn
2012-01-27 by sasami@hotkey.net.au
>Ok I did see that on the site, > >will it be able to handle all the needs in the diagram? (8 total outputs from two inputs) ? and 1 AUX input to alternate on the second? This will only work if your pedal is being used to generate a control voltage to drive other things. If the o
2012-01-26 by grayz4sure
Ok I did see that on the site, will it be able to handle all the needs in the diagram? (8 total outputs from two inputs) ? and 1 AUX input to alternate on the second? jeremy --- In cgs_synth@yahoogroups.com , sasami@... wrote: > > Regular DC Mixer would work just fine as a buffer
2012-01-26 by grayz4sure
--- In cgs_synth@yahoogroups.com , Dave Kendall wrote: > > OK another thing - you'll need to find out what voltages the devices > driven from the expression pedal uses, and what the pinouts are. > > Also some info on what the tap tempo and toggle actually are - shorts > to GND, o
2012-01-26 by Stephen Richards
Cheers Ken Already done , i thought it would be better after reading the notes so went ahead and did it ; now preparing to be driven nuts. I installed them with the middle leg bent forward to be in a 'y' as the one on the right in the picture here : http://www.rapidonline.com/Ele
2012-01-26 by sasami@hotkey.net.au
You could, if you realy wanted, but you will drive yourself nuts with the number of times you need to turn the screw to make a change. If they are the sort with the leads in a straight row, it doesn't matter which way they are oriented. Mount them so they are the easiest to adjus
2012-01-25 by Stephen Richards
Hi Ken I finished the BOG and MARSH pcb's last night. The fingernail method for SMD's worked great (if you work fast...) I only really have one more question at present , your patience over the past few days is much appreciated. Just wondering if it's possible to use Cermet 25 tu
2012-01-25 by sasami@hotkey.net.au
Regular DC Mixer would work just fine as a buffer. > > >--- In cgs_synth@yahoogroups.com , "grayz4sure" wrote: >> >> CV Mega Mixer? >> >> I notice it is out of stock, but would it work? >> >or CV Cluster? > > > >------------------------------------ > >The CGS Modular Synth home p
2012-01-25 by Dave Kendall
OK another thing - you'll need to find out what voltages the devices driven from the expression pedal uses, and what the pinouts are. Also some info on what the tap tempo and toggle actually are - shorts to GND, or voltages. If they are voltages, the CGS 37 should work fine as a
2012-01-25 by Dave Kendall
> You get a bonus mixer too for SPLITTER D1 and D2. The main input to it > is now the SPREAD CV input. Add extra inputs via series 100K resistors > to IC1D pin 13. The output of this mixer will now be where the 330R and > 100K resistors meet, which is also point K. This joins nea
2012-01-25 by Dave Kendall
Hi there. OK - I'm sure someone smarter will chip in soon, but here goes.. The CGS 37 has 8 voltage followers in the diagram on the right hand side. If the 10K resistors were omitted, they will act as active (non-inverting) buffers. Wire a pair of them with the same input, and yo
2012-01-25 by grayz4sure
--- In cgs_synth@yahoogroups.com , "grayz4sure" wrote: > > CV Mega Mixer? > > I notice it is out of stock, but would it work? > or CV Cluster?
2012-01-25 by grayz4sure
CV Mega Mixer? I notice it is out of stock, but would it work?
2012-01-25 by Stephen Richards
Thanks again Ken ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Wednesday, January 25, 2012 9:25 PM Subject: Re: [cgs_synth] Stacking PCB's and Power bussing. >My question is about power bussing between the two. > >Firstly ,
2012-01-25 by sasami@hotkey.net.au
>My question is about power bussing between the two. > >Firstly , can i just run a wire soldered to the bottom of the connector of one board to the corresponding pad of the board below (where the connector would go...). > >ie : + to + , etc. Yes. >Also , does the board below need
2012-01-25 by Stephen Richards
Thanks Ken i have another general question , im going to have to stack a couple of boards on top of each other to fit them in the box. (for the Panel #3 and SWAMP i used AC423 bud boxes , i will for the MARSH and BOG too). I'll be stacking the Diatonic Converter on top of the Inf
2012-01-25 by sasami@hotkey.net.au
>Hi Ken > >I am about to install transistors to the CGS116 EXT ADSR. > >As i under stand the notes on the CGS116 build page ; all 'N' type transistors are reversed as to how the are shown on the pcb's. No. >Would this mean the LED Driver 2N3565 is going to go in as shown on the p
2012-01-25 by sasami@hotkey.net.au
100n will allow you to double the low rate sensitivity. 470n will allow you about 5 times the low rate sensitivity, and so on. Remember that it also removes the equivalent from the upper end of the pot too. 470n is probably more use. >Hi Ken > >What value should the C Low cap be
2012-01-25 by grayz4sure
I am looking for a CV signal splitter/buffer. Something I could make on a board or already made board that can take a single 10k pot or EXP pedal (eg.Roland EV-7) and split that signal out to several other devices without loosing signal, as well as take tap tempo out signals on a
2012-01-25 by Stephen Richards
Hi Ken I am about to install transistors to the CGS116 EXT ADSR. As i under stand the notes on the CGS116 build page ; all 'N' type transistors are reversed as to how the are shown on the pcb's. Would this mean the LED Driver 2N3565 is going to go in as shown on the pcb and all o
2012-01-24 by Stephen Richards
Hi Ken What value should the C Low cap be ? Is 100n OK or should i try a higher value ? [Non-text portions of this message have been removed]
2012-01-24 by Stephen Richards
cheers Ken , i'll just get on with it. ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Tuesday, January 24, 2012 5:19 PM Subject: Re: [cgs_synth] CGS 09 question >Hi Again Ken > >Having said that , is the painful process of a
2012-01-24 by sasami@hotkey.net.au
>Hi Again Ken > >Having said that , is the painful process of all those SMD's on the other boards redundant or should i bite the bullet get it done ? Bite the bullet. You could use leaded parts between the IC pins, or between the pads if you want, but seriously, soldering on 1206
2012-01-24 by Stephen Richards
Hi Again Ken Having said that , is the painful process of all those SMD's on the other boards redundant or should i bite the bullet get it done ? ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Tuesday, January 24, 2012 4:23
2012-01-24 by sasami@hotkey.net.au
>From the picture it looks like ceramic caps , are they just 100n ceramic decoupling caps ? Yes, just plain old decouplers. They are not essential. Ken > >[Non-text portions of this message have been removed] > > > >------------------------------------ > >The CGS Modular Synth ho
2012-01-24 by sasami@hotkey.net.au
It's actually mentioned in the build notes, but as you know, info gets lost in text. I've updated one of the wiring pics to show it too. Ken >Cheers Ken > >I figured out the VCF MKT locations by deduction and looking at the photo on the build page. > > >__________________________
2012-01-24 by Stephen Richards
Hi Ken and all I am about to finish CGS09 VC Divider. Can you please tell me what goes in the two blank spaces above and below the BEAD closest to the 0.156 4 pin connector. From the picture it looks like ceramic caps , are they just 100n ceramic decoupling caps ? [Non-text porti
2012-01-24 by Stephen Richards
Cheers Ken I figured out the VCF MKT locations by deduction and looking at the photo on the build page. ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Tuesday, January 24, 2012 10:38 AM Subject: Re: [cgs_synth] CGS 29 (ver 2
2012-01-23 by sasami@hotkey.net.au
Good point. Between ACI and DCI up near the power connector. >Just stuffing the MARSh and BOG pcb's. > >I am about to put in 100n caps to the Wave Mult 2.1 but i cant figure out where the single MKT 100n needs to go. > >[Non-text portions of this message have been removed] > > >
2012-01-23 by Stephen Richards
Just stuffing the MARSh and BOG pcb's. I am about to put in 100n caps to the Wave Mult 2.1 but i cant figure out where the single MKT 100n needs to go. [Non-text portions of this message have been removed]
2012-01-21 by cg_synth
1/8W will be fine. It's not like they are carrying much current! 1/2W metal film are often the same size as 1/4W metal film, but sometimes they are big bulky things. Ken --- In cgs_synth@yahoogroups.com , Richard Brewster wrote: > > You can always use a larger wattage resistor, i
2012-01-21 by djstorm
More wattage should never cause a problem- other than that the resistors are physically bigger, and may not fit! :) On Fri, Jan 20, 2012 at 7:35 PM, Stephen Richards okayjustalittle@... > wrote: > ** > > > Hi All > > I ran out of 200K 1% .25W Metal Film resistors. > > Can i use 2
2012-01-21 by Richard Brewster
You can always use a larger wattage resistor, if it will fit. Most times you could substitute a 1/8 watt resistor in CGS modules, too. Ken may want to comment on that. Richard Brewster http://pugix.com On 1/20/12 8:35 PM, Stephen Richards wrote: > Hi All > > I ran out of 200K 1%