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 Forum index » DIY Hardware and Software
DS 7 clone
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Uncle Krunkus
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Joined: Jul 11, 2005
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PostPosted: Fri Oct 27, 2006 4:25 am    Post subject: Reply with quote  Mark this post and the followings unread

v-un-v wrote:
Love the avatar Uncle K. Dunno what's more frightening, you or the teminator Shocked Laughing


If either side of that gif resembles any actual person in the real world, then God help us all!!! Laughing

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Joel



Joined: Sep 12, 2006
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PostPosted: Fri Oct 27, 2006 7:36 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi all,

a couple more questions have arisen as I try to order parts....

Rapidelectronics doesn't have 7805 voltage regulators, can I use this LE50CZ?

In that case I only need a 2.2uF stabilising cap, is that C7 in the parts list / c20 on Uncle K's stripboard layout?

Rapid doesn't have BC550 either, any suggestions for replacements?

Thanks for all the help (as always)

Joel
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Uncle Krunkus
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PostPosted: Fri Oct 27, 2006 8:33 am    Post subject: Reply with quote  Mark this post and the followings unread

Oh yes they do: - here



Yeah, that would be C20

I'd check again for the BC550, they're almost as common as the 7805.


[Blue Hell shortened the link a bit]

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vibesmaster



Joined: Aug 26, 2006
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Location: southend on sea,essex,uk

PostPosted: Fri Oct 27, 2006 4:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

yes got mine built up tonight and i cant believe it i actually got sound Laughing will get some pictures up and sound samples when i get it cased up over the weekend ,



joel i used a bc547 instead of 550 thats what google came up with as a match and it seems to work lovely if you wanted pm me your address and i will post one out on monday for you i ended up getting 50 so got some spare Laughing
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Joel



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PostPosted: Mon Oct 30, 2006 5:28 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the link Unc, last time I rely on the search function Embarassed

Looking forward to pics and samples vibesmaster!! I'll pick up some bc550s at Maplin, cheers for the offer though, I'm sure you'll find something to do with all those spare 547s Very Happy
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vibesmaster



Joined: Aug 26, 2006
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PostPosted: Tue Oct 31, 2006 4:36 pm    Post subject: Reply with quote  Mark this post and the followings unread

yes people back again Laughing i left the battery in my ds-7 lastnight and went to show it off to a friend tonight but there was no sound , i replaced the battery and it was fine so it seems it is using battery power even if not producing sounds, on my synare it has a plug in power meaning when you plug a 1/4"jack into the input it kicks the battery power through the connection , is this possible on the ds-7 ? didnt think it should use power if not being used? the battery was a good one by the way , just dont want to be taking the battery in and out everytime i want to have a play about , i always take batterys out still if im not going to use it for a week or 2 ,

thanks for any help Cool
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Joel



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PostPosted: Tue Oct 31, 2006 4:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi vibesmaster, can't you just wire a switch in series with the battery? It could either be a toggle switch, or a switch built in to one of the jacks (i.e. the output jack, so that when you plug something into the output it fires up the circuit) - you'd need to find a switched socket that was normally open Question

Good luck! Remember to post some pics and samples with a fresh battery Wink
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vibesmaster



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PostPosted: Tue Oct 31, 2006 5:00 pm    Post subject: Reply with quote  Mark this post and the followings unread

yeah will have a look into that in the morning when im less tired Embarassed
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Wild Zebra



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PostPosted: Wed Nov 01, 2006 8:18 am    Post subject: Reply with quote  Mark this post and the followings unread

Use a stereo jack and wire the - battery to the ring of the jack. So when you plug a jack into it, it will make the connection and turn on. Hope that makes sense
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discointellect



Joined: Jan 08, 2006
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PostPosted: Wed Nov 01, 2006 12:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

Nearly got my DS clones finished - 2 DS8s and 2 DS7s on a rackmount panel; got 3 of the boards wired up so far and its sounding good sequenced from my Regelwerk. I've done the CV in mods as well so I can have all 4 channels playing tunes rather than just pure synth percussion if the mood takes me.

From the front...

Posted Image, might have been reduced in size. Click Image to view fullscreen.

From the back...

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Pretty messy from both angles I'll admit, but amazingly it works.
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Wild Zebra



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PostPosted: Wed Nov 01, 2006 2:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

Very Nice, I'm still alittle ways off on the DS7's, but could you point me in the direction of the CV in mods? DS8? thats the DS7 with noise right? I figure by the time I get to these there will be more mods Laughing Dnny knows how long I had the DS7's on my list. About as long as his Soundlab Shocked hehe
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discointellect



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PostPosted: Wed Nov 01, 2006 2:22 pm    Post subject: Reply with quote  Mark this post and the followings unread

Sure, here's the diagrams Marc supplied (hope he doesn't mind me redistributing them here)


ds7_extCVIN.gif
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ds7_extCVIN.gif



ds8_extCVIN.gif
 Description:
DS-8 CV In Mod
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ds8_extCVIN.gif


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dnny



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PostPosted: Thu Nov 02, 2006 5:27 am    Post subject: Reply with quote  Mark this post and the followings unread

Very nice,
I thought i have posted the CV mod but no? well thanks for posting it.

Tim (zebra) . I´m taking steps back whit my SL - one day week ago, i savaged few pots from my "nearly done"-SL for other projects - that's bad i know.
there should be betting on dnny vs. v-un-v, who gets it done first?
what do you think?

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richardc64



Joined: Jun 01, 2006
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PostPosted: Thu Nov 02, 2006 8:38 am    Post subject: Reply with quote  Mark this post and the followings unread

discointellect wrote:
...I can have all 4 channels playing tunes rather than just pure synth percussion


Tunes? TUNES?!?!?! How well do the VCOs track? I'd like to hear that.
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discointellect



Joined: Jan 08, 2006
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PostPosted: Thu Nov 02, 2006 8:48 am    Post subject: Reply with quote  Mark this post and the followings unread

richardc64 wrote:
discointellect wrote:
...I can have all 4 channels playing tunes rather than just pure synth percussion


Tunes? TUNES?!?!?! How well do the VCOs track? I'd like to hear that.


Well, it's not a nice 1v/Oct or anything so don't get too excited; I sequence it from my Regelwerk and do it entirely by ear rather than trying to match the notes it says it's playing but you can definitely get melodies out of it. I suspect trying to play it directly from a keyboard would give you some interesting results though Wink
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Wild Zebra



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PostPosted: Thu Nov 02, 2006 9:20 am    Post subject: Reply with quote  Mark this post and the followings unread

THANKS, Cv ins will be dandy
Quote:
there should be betting on dnny vs. v-un-v, who gets it done first?


he he. Its all good theres just so much sweet stuff to make. I'm "almost" finished my sequencer. I got the boards from Ray last November. I can't tell you how excited I am about that. Just need to find someone to work out my PSU woes. Then finish some module panels I've had for another year. THEN DS7's AHHHHHHHHHHHH. Muhhahahahahahahha

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EraSer



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PostPosted: Mon Nov 06, 2006 1:01 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi all,
I have a problem with my DS7 Crying or Very sad .It doesn't wok very well:when i put a jack from the DS7' output to the mixer, I can hear that it strangely Shocked starts oscillating , even when I don't insert piezo in the DS7 input.Then I try making sound with piezo but it doesn't work.What I can do Question
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sneakthief



Joined: Jul 24, 2006
Posts: 531
Location: Berlin

PostPosted: Sat Nov 11, 2006 3:43 am    Post subject: Reply with quote  Mark this post and the followings unread

i just had the funniest DS7 experience Very Happy

i had only ever visited this thread a couple of times but hadn't been that interested - that is until i had to perform with one last night!!

story: an ex-member of an old new-wave band called "Rational Youth" from Canada had a performance in berlin last night. he 'recruited' various people to help him perform for his set and i helped out with a couple of songs by playing a Merlin and a DS7! (which i had never seen before in real-life)

i basically had to fool around with the knobs while triggering the DS7 by whacking it, thus triggering the internal piezo. it sounds great and is really fun to play with.

the casing is so solid and the knobs still feel good after all these years. i'm impressed.

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MIKEFORD



Joined: Nov 13, 2006
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PostPosted: Wed Nov 15, 2006 7:38 pm    Post subject: anybody tackle the ds8 Reply with quote  Mark this post and the followings unread

howdy!
anybody build the ds8(vero or ordered/madeds8) They seem to be likker synthdrums for the diyer!
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Uncle Krunkus
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PostPosted: Thu Nov 16, 2006 1:16 am    Post subject: Reply with quote  Mark this post and the followings unread

balance wrote:
Hi all,
I have a problem with my DS7 Crying or Very sad .It doesn't wok very well:when i put a jack from the DS7' output to the mixer, I can hear that it strangely Shocked starts oscillating , even when I don't insert piezo in the DS7 input.Then I try making sound with piezo but it doesn't work.What I can do Question


Did you just build it, or has it worked before?

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EraSer



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PostPosted: Thu Nov 16, 2006 3:44 am    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:

Did you just build it, or has it worked before?


It just worked before.NOOOOOOOO Shocked Now I've noticed that a regulator's pin is broken!Maybe could it be the root of the problem?
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Uncle Krunkus
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PostPosted: Thu Nov 16, 2006 5:12 am    Post subject: Reply with quote  Mark this post and the followings unread

If any of the pins on the regulator are broken, it won't have a snowball's chance in hell of working! Laughing
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Pehr



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PostPosted: Sun Dec 03, 2006 3:43 am    Post subject: Reply with quote  Mark this post and the followings unread

0k, if I would want to do a patched out DS7 Razz , where would I separate the VCO from the VCA? Does anyone know? Confused

btw, what waveform does the DS7 VCO produce? tri/square? Embarassed

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Uncle Krunkus
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PostPosted: Sun Dec 03, 2006 4:51 am    Post subject: Reply with quote  Mark this post and the followings unread

I reckon the connection between U1A pin1 and the R29/30 pair is where you should cut it. (first, of course, make sure the patient is stable and that the heart/lung machine is on the backup generator! Twisted Evil )
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PostPosted: Sun Dec 03, 2006 6:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Should I cut the vein between R21 and pin 3 of U3 too?
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