| interested in a PCB or 4? |
| yep |
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98% |
[ 151 ] |
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| Total Votes : 153 |
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janvanvolt
Joined: Nov 24, 2005
Posts: 285
Location: Mainz, Germany
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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 Posted: Thu Mar 20, 2008 5:23 pm Post subject:
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| Quote: | | so...im just gonna throw this out there, sorry if this is a little "piggyback-ish", but... |
hey i am going to 'jack my own thread for a minute and throw this out there-
http://www.horizonsisg.com/products/idmark.asp
i'm sure it's been discussed here before- photosensitive adhesive backed aluminum sheets. all that's required to process it is a UV lamp, black toner on a transparency [your art] and water.
it's not cheap, a 10-pack of 10"x12" 7 mils thick is around $120- but if anyone is into a group-buy, i'm down.
120/5= 25 bux orso each, 2 sheets each. you could get 5-7 panels per sheet depending.
anybody into it? |
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Luka
Joined: Jun 29, 2007
Posts: 1003
Location: Melb.
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Thu Mar 20, 2008 5:39 pm Post subject:
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| Quote: | | seems that the CV controlled section is mentioned through this thread but not on your panels josh. |
hey nice work. the CV control is 'att' and 'dec' input jacks. there is no 'overall' input or control on mine. this could be added, however.
josh |
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Luka
Joined: Jun 29, 2007
Posts: 1003
Location: Melb.
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neandrewthal
Joined: May 11, 2007
Posts: 672
Location: Canada
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| Posted: Thu Mar 20, 2008 11:08 pm Post subject:
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| topp wrote: | | Quote: | | so...im just gonna throw this out there, sorry if this is a little "piggyback-ish", but... |
hey i am going to 'jack my own thread for a minute and throw this out there-
http://www.horizonsisg.com/products/idmark.asp
i'm sure it's been discussed here before- photosensitive adhesive backed aluminum sheets. all that's required to process it is a UV lamp, black toner on a transparency [your art] and water.
it's not cheap, a 10-pack of 10"x12" 7 mils thick is around $120- but if anyone is into a group-buy, i'm down.
120/5= 25 bux orso each, 2 sheets each. you could get 5-7 panels per sheet depending.
anybody into it? |
I`m definitely down for one or two. I assume(and hope) you are talking about the black variety? That is what I use for my panels. I have just enough left to fill out the last row in the cabinet I`m working on, but that doesn`t leave me room to screw up a couple, so I could probably use some more, since I`m not planning on purchasing another whole pack for a while. I`ve attatched a photo as an advertisement for this product. Perhaps this idea should have it`s own thread so more people see it.
Edit: Picture moved to other thread.
_________________
" I went through quite a few trannies til I found one I liked" - Wild Zebra
Last edited by neandrewthal on Fri Mar 21, 2008 8:44 pm; edited 1 time in total |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Fri Mar 21, 2008 2:52 am Post subject:
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hey drew,
yeah i'm into the black. i'd also like to check out the blue. those look really nice-
questions, questions: what thickness did you use? how did you screw up on them  ? caveats etc.? do you double-up transparencies for extra opacity? how resistant is it to scratching? oh, and where did you get your exposure light? any tips on exposure?
cool, i'm sure we can can a few others interested in goin' in on a pack. i ordered some samples today.
josh |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Fri Mar 21, 2008 3:59 am Post subject:
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| Quote: | | Perhaps this idea should have it`s own thread so more people see it. |
made a thread, can we move your 'sales pitch' there? |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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mono-poly
Joined: Jul 07, 2004
Posts: 937
Location: Rotterdam, Netherlands
Audio files: 2
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| Posted: Sun Mar 23, 2008 3:31 pm Post subject:
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Yeaah  |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Sun Mar 23, 2008 9:07 pm Post subject:
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oh oh looks like i spoke too soon, i made a slight boo-boo 
must have been one of the nights i got into the project way too late [say, 3-5am, slightly drunk to mostly sober to barely able to keep my eyes open.. i keep strange work-hours, something about 'peace and quiet', i guess.] weird thing is i checked it over twice and never found it. that's probably because i never updated the schematic i was checking off of. oh well..
it's not a big thing at all, just leave one resistor off the board's designated place for it and wire it between a jack and switch leg. sorry if this sort of thing perturbs any of you- it is actually easier than stripping and tinning a piece of wire though i guess.
anyhow, it will be made very clear in the parts/wiring diagrams so i don't think it will confound anyone.
that's all. now to finish the documents...
oh, and i will update those who have put in late requests as soon as i know if i can get more. |
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Coriolis
Joined: Apr 11, 2005
Posts: 616
Location: Stilling, Denmark
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| Posted: Mon Mar 24, 2008 3:07 am Post subject:
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You are forgiven!
As long as the docs are clear on it...otherwise we will bug the heck out of you here on the forum...
C |
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numbernone
Joined: Aug 16, 2006
Posts: 477
Location: new york city
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| Posted: Mon Mar 24, 2008 5:23 am Post subject:
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I Cant tell exactly from the overhead picture, but will those headers immediately to the left of the pots be getting in the way of the other panel components? I am aiming to copy the Buchla panel 100%.
Could you post another more head on shot, so I can figure out my strategy??
Thanks and as always CANT WAIT |
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neandrewthal
Joined: May 11, 2007
Posts: 672
Location: Canada
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| Posted: Mon Mar 24, 2008 9:59 am Post subject:
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Looks great 
_________________
" I went through quite a few trannies til I found one I liked" - Wild Zebra |
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clickmrmike
Joined: Jun 08, 2007
Posts: 48
Location: Gnashville
Audio files: 1
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| Posted: Mon Mar 24, 2008 1:44 pm Post subject:
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Looks great!
Where'd you get the little metal clips to hold the transistors together?
clickmrmike |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Mon Mar 24, 2008 2:20 pm Post subject:
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| Quote: | | will those headers immediately to the left of the pots be getting in the way of the other panel components |
it depends on where your panel components are- so you're not mounting the pots on the PCB right? then i suppose you can mount the PCB any way you like, as there are 4-40 sized mounting holes in each corner. you don't have to use headers of course, and you can always solder wires to the pads from the bottom if you need to. anyways, hope this helps,
josh |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Mon Mar 24, 2008 2:38 pm Post subject:
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| Quote: | | Where'd you get the little metal clips to hold the transistors together? |
found a few of 'em in a junk box i bought. i usually just use glue and heatshrink.
Gnashville eh? i defected to california a couple summer's ago but spent alot of time around there. you been there a while? i have fond memories of bongo java, pizza perfect! |
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clickmrmike
Joined: Jun 08, 2007
Posts: 48
Location: Gnashville
Audio files: 1
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| Posted: Mon Mar 24, 2008 7:02 pm Post subject:
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| topp wrote: | | Quote: | | Where'd you get the little metal clips to hold the transistors together? |
found a few of 'em in a junk box i bought. i usually just use glue and heatshrink.
Gnashville eh? i defected to california a couple summer's ago but spent alot of time around there. you been there a while? i have fond memories of bongo java, pizza perfect! |
Darn, I've been trying to find those little clips someplace for awhile.
OT:
Funny, I used to live in the Bay area. Ahh, yes, more than a few visits to Pizza Perfect in the last few years, although as an ex-Chicagoan I have pretty high pizza standards.
clickmrmike |
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Luka
Joined: Jun 29, 2007
Posts: 1003
Location: Melb.
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| Posted: Mon Mar 31, 2008 8:27 pm Post subject:
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just while we are waiting i thought i would post this
just deeper explanation of the functions of the buchla 281e
from the infamous SOS buchla review
| Quote: |
281e Quad Function Generator
Back in 1969, EMS confused UK synthesists by introducing a module that they called a 'Trapezoid'. This was a contour generator that provided Attack, On, Release, and Off stages or, when cycling, a range of low-frequency waves shaped by the Attack and Release values. The 281e is simply four such trapezoid contour generators.
Shaping a contour is achieved using just two knobs, Attack and Decay (which I would call Release). Both of these can also be adjusted using CVs. Three modes are provided — ASR, AR, and repeating AR, independently selectable for each trapezoid — and the output appears at each generator's blue socket. The red outputs provide timing pulses at the end of each contour or, when cycling, at the end of each cycle.
But this is just the tip of the iceberg. The four contour generators — again called A, B, C and D — are arranged as two pairs that are capable of generating more complex contours. There are two architectures for doing this. Firstly, you can use the logic in the lower right-hand corner to mix the A&B (and C&D) trapezoids to create four-stage ADSR and five-stage AD1D2SR-type curves. It does this by allowing you to create a transient on (say) A, followed by an attenuated sustained section on B. Buchla's system (which he calls an 'Or') then determines the highest voltage at any given moment and presents this to the output (see the top two diagrams on the opposite page). Unfortunately, the attenuation levels for B and D are not stored in a 225e preset, so alas, you cannot store these contours as part of your patches.
The second method for creating complex contours is called 'Quadrature Mode', and is accessed by pressing the 'A-B' and/or 'C-D' buttons in the lower left of the module. In this mode, the linked pairs operate as follows (using 'A-B' as an example). Firstly, the A buss is triggered, and A enters its Attack phase. When this is completed, A remains at its maximum level, and B begins its Attack. When this is completed, everything is sustained (when in Sustain mode) or A begins its Decay (when in Transient mode) while B maintains its maximum level. B then begins its Decay. At the end of all of this, if A is in Cyclic mode, the entire process repeats ad infinitum.
buchla 5a.s
Two 281e contours, one an AR transient, the other an ASR sustain.
buchla 5b.s
Summing the two contours while attenuating B by 50 percent.
buchla 5c.s
Two dissimilar 281e ASR contours, A and B.
buchla 5d.s
Summing A and an offset version of B to create a new contour.
Buchla & Associates describe this algorithm as having the two contour generators 90 degrees out of phase with one another. That's not as daft as it seems; there are four stages, and B lags A by one stage. In the lower two diagrams opposite, you can see what happens in a simple case, and the contour that you obtain if you stack the CV outputs of A and B.
Happily, the straightforward trapezoid contours, quadrature contours and Or contours are available simultaneously (with some logical restrictions), making each 281e enormously flexible once you get your head around what's going on.
The 281e's fastest attack is quoted as a remarkable 1ms, and my tests verify this. I passed high-frequency noise through a VCA 'blipped' by one of the contour generators in Transient mode, with Attack and Decay set to 0. The VCA was open for a total of around 190 milliseconds, with an almost instantaneous Attack. The Decay took much longer in total — it dropped back to zero in around 15ms, but took another 140ms to settle. I suspect that this profile is generated not by the contour generator, but is the response of the VCA in the 292e. Either way, this was surprising... so I duplicated the test, passing a high-frequency audio wave through one channel of a 292e in VCA-only mode. This verified the earlier result; patches shaped by a 281e and a 292e combine an extremely snappy attack with a much more sluggish release.
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http://www.soundonsound.com/sos/jan06/articles/buchla200e.htm
_________________
problemchild
melbourne australia
http://cycleofproblems.blogspot.com/
http://www.last.fm/user/prblmchild |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Mon Mar 31, 2008 11:37 pm Post subject:
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| Quote: | | the infamous SOS buchla review |
thanks, i hadn't seen part 2. |
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funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3
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| Posted: Tue Apr 01, 2008 6:57 pm Post subject:
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Hi,
what's the english name for the little piece that holds the two transistor face to face...transistor holder ?
I guess i will go with glue... |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Tue Apr 01, 2008 8:43 pm Post subject:
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| Quote: | Hi,
what's the english name for the little piece that holds the two transistor face to face...transistor holder ?
I guess i will go with glue |
i have no idea. i guess you could make your own pretty easily though? |
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blue hell
Site Admin
Joined: Apr 03, 2004
Posts: 24574
Location: The Netherlands, Enschede
Audio files: 308
G2 patch files: 320
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| Posted: Wed Apr 02, 2008 8:05 am Post subject:
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| funkyfarm wrote: | | transistor holder ? |
Clips, I think.
_________________
Jan
also .. could someone please turn down the thermostat a bit.
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Wed Apr 02, 2008 6:19 pm Post subject:
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ok i got an email confirming that the extra pieces are being shipped as well as the initial quantity, so i will have enough for all the late orders received.
should be here by the end of this week?
till then |
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toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
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| Posted: Thu Apr 03, 2008 5:57 pm Post subject:
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so the wait is nearly over, and I am getting ready to send invoices [i realized this is the easiest way to go about this] via email, so i am sending PMs as a final confirmation and a yahoo email address set up specifically to handle this and all support issues later.
 please do not send payments until i make the announcement that the shipment has arrived. thanks |
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