BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

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boops
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BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by boops » Fri Feb 19, 2021 1:34 pm

Buchla 200 upgraded X serie

viewtopic.php?f=17&t=243688
The 29 03 21
Ive make the bom with more details ,please wait.
81715B93-6C5D-484A-83AB-C3DD40902A6C.jpeg
68F052CE-B701-4F43-9585-D13883FB1450.jpeg
1367F53C-CA0F-4811-AC92-2734634B9ED7.jpeg
I open this thread about the 259X Build.
259X BOM V2 30 MARCH 21.zip
(16.69 KiB) Downloaded 3 times
PANEL Silkscreen HQ.

http://thebeast.co.uk/?product=buchla-s ... en-printed
https://modularsynthesis.com/roman/buchla259/259cwg.htm
Last edited by boops on Thu Apr 01, 2021 6:20 am, edited 6 times in total.
208X 200X modules serie ,Buchla 200 upgraded viewtopic.php?f=17&t=243688&p=3444875#p3444875
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 price down atm/
HQ small case buchla psu PCB
viewtopic.php?p=3118393#3118393
viewtopic.php?t=211862&highlight=

Cablebasher
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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by Cablebasher » Sat Feb 20, 2021 5:38 am

Looks great.

What does the auto tune function do?

Is it just a sine tone to tune to like on the minimoog?

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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by Brian2020 » Sun Feb 21, 2021 10:41 am

Cablebasher wrote:
Sat Feb 20, 2021 5:38 am
Looks great.

What does the auto tune function do?

Is it just a sine tone to tune to like on the minimoog?
At this point I think it’s just there for looks/historical accuracy and serves no functional purpose.

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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by boops » Sun Feb 21, 2021 5:38 pm

Brian2020 wrote:
Sun Feb 21, 2021 10:41 am
Cablebasher wrote:
Sat Feb 20, 2021 5:38 am
Looks great.

What does the auto tune function do?

Is it just a sine tone to tune to like on the minimoog?
At this point I think it’s just there for looks/historical accuracy and serves no functional purpose.
We have spent time about the autotune , it’s a comparator design ,and have created a schematic as a top notch X upgrade.
Don Buchla had already designed the connection for,(there are always on the 259X pcbs,)but its not finished,or perhaps was controlled by a Buchla 300 .
Finally,we have decided to offer a 100% vintage version for this little beast, (with a few pcb design upgrades like a ground plane,no flying wire with the volages ,another trimmer to help in the calibration,etc),perhaps one day we will offer a little autotune pcb to mod the 259X.
208X 200X modules serie ,Buchla 200 upgraded viewtopic.php?f=17&t=243688&p=3444875#p3444875
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 price down atm/
HQ small case buchla psu PCB
viewtopic.php?p=3118393#3118393
viewtopic.php?t=211862&highlight=

Cablebasher
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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by Cablebasher » Mon Feb 22, 2021 2:44 am

Thanks for the update

If the module isn’t complicated enough, Don decided to also put switches on there that don’t do anything!

Look forward to building

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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by samlar » Tue Mar 02, 2021 7:06 am

Looks great.

What does the auto tune function do?

Is it just a sine tone to tune to like on the minimoog?
At this point I think it’s just there for looks/historical accuracy and serves no functional purpose.
We have spent time about the autotune , it’s a comparator design ,and have created a schematic as a top notch X upgrade.
Don Buchla had already designed the connection for,(there are always on the 259X pcbs,)but its not finished,or perhaps was controlled by a Buchla 300 .
Finally,we have decided to offer a 100% vintage version for this little beast, (with a few pcb design upgrades like a ground plane,no flying wire with the volages ,another trimmer to help in the calibration,etc),perhaps one day we will offer a little autotune pcb to mod the 259X.
Looks really cool
it's a pity how more and more these devices are substitute by a tablet or touchscreens
If you need quick money till payday I recommend you check out some options at https://directloantransfer.com/200-dollar-loan/ site

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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by boops » Tue Mar 09, 2021 5:52 pm

USE THIS UPDATED BOM THANKS
259X BOM V2_09032021.pdf
(79.56 KiB) Downloaded 11 times
208X 200X modules serie ,Buchla 200 upgraded viewtopic.php?f=17&t=243688&p=3444875#p3444875
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 price down atm/
HQ small case buchla psu PCB
viewtopic.php?p=3118393#3118393
viewtopic.php?t=211862&highlight=

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boops
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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by boops » Tue Mar 30, 2021 8:23 am

A clean bom loaded in the first post
208X 200X modules serie ,Buchla 200 upgraded viewtopic.php?f=17&t=243688&p=3444875#p3444875
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 price down atm/
HQ small case buchla psu PCB
viewtopic.php?p=3118393#3118393
viewtopic.php?t=211862&highlight=

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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by Cablebasher » Tue Mar 30, 2021 8:25 am

Would the vactrols need matched for this like in a low pass gate?

Or will any vactrols work for this module?

Cheers. Look forward to building.

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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by boops » Thu Apr 01, 2021 6:19 am

Would the vactrols need matched for this like in a low pass gate?


No

Or will any vactrols work for this module?

Use the bom ones VTL5C3/2 and VTL5C3,i use xvive brand.

https://modularsynthesis.com/roman/buchla259/259cwg.htm
208X 200X modules serie ,Buchla 200 upgraded viewtopic.php?f=17&t=243688&p=3444875#p3444875
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 price down atm/
HQ small case buchla psu PCB
viewtopic.php?p=3118393#3118393
viewtopic.php?t=211862&highlight=

Cablebasher
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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by Cablebasher » Mon Apr 05, 2021 2:11 pm

Great stuff.

Do you have any images of the completed boards (component sides) to get an idea of the build?

Cheers.

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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by momo » Tue Apr 06, 2021 7:20 pm

@cablebasher these boards are v.close to a 1:1 copy of the original Buchla schematics and PCB layout, making wise substitutions for some parts (that do not affect the sound). So if you want to see examples of a stuffed PCB, a quick Google of some sites should yield results, e.g. if you put 'Mark Verbos repair 259' into Google. BTW I'm also in the UK so if you want to compare notes etc. drop me a line. I'm about to dive into the build pretty soon :)

And a quick note to say my PCBs arrived earlier today, packed extremely well. My baords are V2, sporting a highly sleek matt black solder mask, and feature some v.nice touches, such as multiple board configurations for the frequency pots, enabling 9mm or larger 16mm pot options. They are amoung the nicest PCBs I've ever ordered :loves:

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Re: BUCHLA 200 UPGRADED SERIE 259X BUILD THREAD

Post by Cablebasher » Thu Apr 08, 2021 2:09 pm

Thanks momo.

I found those verbos pics.

Dave brown has just put up some closeup images of a vintage 259 (or maybe vintage recreation) which will be very helpful.

It’s part of the MEMS project and is mentioned over in the Buchla forum section.

Look forward to building and posting my progress (or lack of) in this thread!

So so many resistors...

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