Buchla 100 clones: 158, 180, 140, 156, 106, etc. DEMOS

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lasesentaysiete
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Buchla 100 clones: 158, 180, 140, 156, 106, etc. DEMOS

Post by lasesentaysiete » Fri Oct 19, 2018 11:53 am

I am offering Buchla 100 DIY pcbs through my new web store linked to below. Sign up to the mailing list for pcb releases, etc:

https://www.lasesentaysiete.com/

Image

https://soundcloud.com/lasesentaysiete/144-190a

https://soundcloud.com/lasesentaysiete/100-series-seq-2

These are new PCB layouts done using original Buchla schematics. I have substituted modern equivalents of obsolete transistors when necessary. No other changes were made, except for the "known" errors in some of the schematic drawings.

I am also doing panels for each pcb. Panel files will be in .fpd format.

The pcbs use 16mm pcb-mounted potentiometers in order to facilitate wiring.

BOM and Mouser cart will also be available for each module. Luckily, there are no exceedingly rare parts used in any of the layouts to date, and almost everything is included in the Mouser carts (not the potentiometers).

EDIT: Panel files are available via Dropbox.
I am not yet sure how I will go about sharing the panel files. My web host does not allow .fpd files to be linked to, so if anyone has any suggestions, please. Ideally, I would just leave the panel files up for anyone to use.
Last edited by lasesentaysiete on Sat Jan 19, 2019 7:28 am, edited 15 times in total.

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the bad producer
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Post by the bad producer » Fri Oct 19, 2018 12:09 pm

Woo, looks great!

(I had similar problem hosting files, when I zipped them the problem disappeared, maybe that works for you?)

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cygmu
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Post by cygmu » Fri Oct 19, 2018 12:15 pm

That’s exciting news.

Would a github space be ok for hosting files?

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lasesentaysiete
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Post by lasesentaysiete » Fri Oct 19, 2018 12:18 pm

I will link the panel files to dropbox. Seems to work. Any problems, let me know.

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the bad producer
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Post by the bad producer » Fri Oct 19, 2018 12:24 pm

Have you a rough price for the 158 PCB? I always wanted a pink 100 series, and now I can do it!

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lasesentaysiete
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Post by lasesentaysiete » Fri Oct 19, 2018 12:25 pm

the bad producer
158a is 60€.

All 1u pcbs will be between 40€ and 60€. 2u stuff will be around 90€.

The prices should be on the individual pages. Shipping is included.

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Post by the bad producer » Fri Oct 19, 2018 12:28 pm

:tu:

Will you be doing the full range?

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Post by lasesentaysiete » Fri Oct 19, 2018 12:33 pm

the bad producer
After these first 9, I will work on 144, 123, 107, 114, 175, 190. Not necessarily in that order, though.

My ultimate goal would be to get a 196 done so that the 185 becomes possible :)

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J3RK
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Post by J3RK » Fri Oct 19, 2018 12:45 pm

Nice!

Hmm... Blue-chla 100 system... Sounds like fun.
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Post by djthopa » Fri Oct 19, 2018 1:07 pm

Muy interesado!

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Post by nvining » Fri Oct 19, 2018 1:45 pm

Any exotic parts needed to build these - weird transistors, etc.?

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Post by lasesentaysiete » Fri Oct 19, 2018 1:52 pm

nvining
not yet! And mostly everything is available from Mouser.

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Post by djs » Fri Oct 19, 2018 1:53 pm

Very cool! Any thoughts on doing the Buchla 148 (Harmonic generator)? :)


Also- do these run on 15v/0v, or is there a 24v line required as well?
"Noise is what the Earth is made of" - David Bowie

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Post by lasesentaysiete » Fri Oct 19, 2018 1:56 pm

djs
the schematic for the 148 is available, and I will probably have a go at it eventually. Who knows how it turns out, though :)

Everything so far is +15v/0v. +24v is needed for the 190, but that will come later.

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Post by hox3d » Fri Oct 19, 2018 2:06 pm

Interesting.

How hard would that be to adapt it to Serge specs/voltages ?
Hopefully just a few components that would need to be changed for 1V/oct tracking and +/-12V supply ?
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Post by the bad producer » Fri Oct 19, 2018 2:15 pm

hox3d wrote:How hard would that be to adapt it to Serge specs/voltages ?
I guess it's a bit more than that as Buchla audio is at line level and the CV doesn't like negative V's IIRC... What do you think lasesentaysiete? Is that true on the 100 too?
I'd really like it if it was all bananas and fitted in with my LW stuff, but then I think I'd like it even if it had 1/4" jacks and black panels! (well, maybe not that :zombie: )

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Post by lasesentaysiete » Fri Oct 19, 2018 2:27 pm

the bad producer
yes, line level for audio.

CV range is different, too. Some of the 100 circuits produce and/or expect a 0-15v range.

For a Buchla osc in Serge, I would go for the 258J from J3rk.

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Post by the bad producer » Fri Oct 19, 2018 2:38 pm

Yeah, for those reasons I think I'd like to keep a little 100 system with your PCBs and some pink panels, I'd probably re-do them in LW format simply as I am set-up for that, but otherwise really looking forward to this (even though I've only known that for a couple of hours :hihi: )

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Post by cygmu » Fri Oct 19, 2018 2:39 pm

The original circuits involve a fair bit of fun with biasing because of the single supply arrangement, so it wouldn't really make too much sense to make simple adaptations for a dual supply -- you'd want to redo the biasing too. At this point you are out of clone territory and into homage. No bad thing, but a different thing.

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Post by julian » Fri Oct 19, 2018 2:40 pm

the bad producer wrote:... and black panels! (well, maybe not that :zombie: )
I know this is off-topic, but black panels were exactly what i was considering whilst walking our hounds today!

I am starting to get a fair few of the buchla panel designs sorted, and was wondering if there would be a market for black panels in that format, rather than just the usual blue and silver.

I did the 208 in black and white, but im wondering about all the rest in the same styling? I mean black seems to be the new silver, when it comes to euro....
.



_________

For stocked euro / buchla / midibox see - http://thebeast.co.uk/?post_type=product

For custom cnc engraved panels see - http://thebeast.co.uk/?page_id=21

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Post by J3RK » Fri Oct 19, 2018 2:41 pm

the bad producer wrote:Yeah, for those reasons I think I'd like to keep a little 100 system with your PCBs and some pink panels, I'd probably re-do them in LW format simply as I am set-up for that, but otherwise really looking forward to this (even though I've only known that for a couple of hours :hihi: )
I was thinking something similar. Maybe two of CLee's boats full of blue 100 modules. Or maybe even two 17" x 7" (Serge-style) panels divided by panel graphics in Hammond boats. (still with Buchla 100 style graphics though)
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Post by hox3d » Fri Oct 19, 2018 3:27 pm

cygmu wrote:The original circuits involve a fair bit of fun with biasing because of the single supply arrangement, so it wouldn't really make too much sense to make simple adaptations for a dual supply -- you'd want to redo the biasing too. At this point you are out of clone territory and into homage. No bad thing, but a different thing.
I'm not feeling that confident enough with pure analog electronics, unfortunately. :hihi:
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Post by lasesentaysiete » Sat Oct 20, 2018 4:19 am

A few questions about panels:

1. Would a pcb/panel option be preferable to just the pcb?
2. White or silver panels? Or the option to choose?

I know some of you have already answered indirectly, but the possibility of offering the pcb/panel combo exists. I am just trying to see if it is worthwhile, in general.

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Post by Starspawn » Sat Oct 20, 2018 5:13 am

I would be up for PCB+Panels, white or silver both good options.

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Post by djthopa » Sat Oct 20, 2018 4:09 pm

I would order panel and pcbs. Silver panel :nana:

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