Search found 283 matches

by xahdrez
Fri Nov 08, 2019 6:01 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

Check the isolation between each rails with an ohmmeter power off a value under 200 ohms is suspect Only just got a chance to check this last night - the resistance is > 200 ohms between all sockets on the unplugged 208, apart from between quiet ground and noisy ground (which is presumably to be ex...
by xahdrez
Mon Nov 04, 2019 8:58 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

I - and other people such as Captnapalm - noticed 208 issues related to Roman's 211 board, that is not best design and is used by SAmodular, as reported in older posts of this thread. Replacing it with the PSU solution that I offer based on a Mean Well PD2515 + Mini Distro Board fixed them all... :...
by xahdrez
Mon Nov 04, 2019 5:09 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

Thanks Boops - will try tonight and see what I find!
by xahdrez
Sun Nov 03, 2019 4:11 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

Sadly the shielded cable hasn't fixed the reverb, but it has made me more aware of the bleed! Reading posts above it seems like I've got the same issue as others (complex oscillator bleed, exacerbated by timbre, mostly rectified by "groundhack" detailed a few pages back). Going to do a bit more dig...
by xahdrez
Sat Nov 02, 2019 1:47 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

Sadly the shielded cable hasn't fixed the reverb, but it has made me more aware of the bleed! Reading posts above it seems like I've got the same issue as others (complex oscillator bleed, exacerbated by timbre, mostly rectified by "groundhack" detailed a few pages back). Going to do a bit more digg...
by xahdrez
Thu Oct 31, 2019 8:58 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

papz wrote:
http://www.portabellabz.be/208pcbfaq.html wrote: The reverb output is via a shielded cable only to avoid the MO bleed common issue, it won't work otherwise, the related trace on board 12 was removed.
Thanks - I totally took a more liberal interpretation of that line! Will swap it over and see how I get on. :tu:
by xahdrez
Thu Oct 31, 2019 7:44 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

Oh wow, would that stop it working all together? I had assumed that it would just affect the quality of the reverb return signal/introduce bleed, not kill it all together? I just did it as a quick test (got the shielded cable but it was in storage, so I hooked up with regular wire between house move...
by xahdrez
Thu Oct 31, 2019 6:33 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

Finally got to testing my 208, and all is working really well (great build btw!) Only thing I'm struggling with is the reverb. Based on comments above, it seems likely it is the tank that has been damaged in transit/installation as I'm experiencing similar symptoms (spring is being driven but no rev...
by xahdrez
Thu Oct 10, 2019 7:46 am
Forum: Music Tech DIY
Topic: Hexinverter Mutant Hot Glue - Schematic
Replies: 2
Views: 324

I could be wrong, but I don't think the schematic was published for this one - or at least I never saw/needed it when I built mine! I'm not sure any of the schematics for the production modules that were also DIY were published from memory.
by xahdrez
Tue Jun 18, 2019 7:52 am
Forum: Music Tech DIY
Topic: SMD Practice Projects
Replies: 10
Views: 430

I think the music think simple eq was designed with that (at least partially) in mind: https://www.thonk.co.uk/shop/music-thing-modular-simple-eq-full-kit/ There are a lot of fun non-linear circuits projects which have SMD - some of them are super dense, but others are really quite manageable. If yo...
by xahdrez
Tue Jun 04, 2019 11:01 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

Chaotic wrote:I used an old scart cable (video/tv). There are quite thin shielded cables inside these cables
Great, many thanks - very helpful suggestion, think I've got one of those lying around somewhere at home! :tu:
by xahdrez
Sun Jun 02, 2019 1:26 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 660
Views: 44495

Taken me a while to find the time needed to work on this, but finally got to testing my build. Cards 1, 2, 3 and 4 all working nicely (well from LED and scope inspection!). Looking forward to the next phase :cloud: Don't suppose anyone in UK has a recommended source on shielded cable for the reverb?...
by xahdrez
Wed Dec 26, 2018 6:23 pm
Forum: Ciat-Lonbarde
Topic: kinda stuck with the plumbutter
Replies: 5
Views: 1727

I found it really helpful when starting out to focus on just one section at a time and see how it interacts with every other section - then just let the patches grow. Then unpatch and try something new. This thread also has some nice patches to try out: https://www.muffwiggler.com/forum/viewtopic.ph...
by xahdrez
Tue Dec 04, 2018 3:17 am
Forum: 5U Format Modules
Topic: Hello Hordijk System
Replies: 2424
Views: 143774

Great news indeed! :cloud:
by xahdrez
Tue Oct 02, 2018 6:36 pm
Forum: Music Tech DIY
Topic: Buchla 218 REV1 Touch Activated Keyboard
Replies: 14
Views: 991

dksynth wrote:thanks, captnapalm you're a champ!

appreciate the link xahdrez but that's for rev2.0 218 which is a bit different.
Oh yeah, my bad! Sorry!
by xahdrez
Tue Oct 02, 2018 4:43 pm
Forum: Music Tech DIY
Topic: Buchla 218 REV1 Touch Activated Keyboard
Replies: 14
Views: 991

Was just looking for this myself (SALE :cloud:)!

Found both at the bottom of this page:

https://electricmusicstore.com/blogs/bu ... -model-218
by xahdrez
Thu Sep 20, 2018 4:05 pm
Forum: Music Tech DIY
Topic: CGS Site going, going.....
Replies: 85
Views: 6781

I noticed that some of them link to images for the schematics - think this is all of them!
by xahdrez
Thu Sep 20, 2018 2:27 pm
Forum: Music Tech DIY
Topic: CGS Site going, going.....
Replies: 85
Views: 6781

JanneI wrote:I made pdf files of every module, here's a zip file.

https://www.dropbox.com/s/w85zvgfi3ofaa ... f.zip?dl=0
Thank you!!! :cloud:
by xahdrez
Tue Mar 20, 2018 1:47 am
Forum: Music Tech DIY
Topic: New Buchla 208 PCBs
Replies: 79
Views: 9517

Likewise :tu:
by xahdrez
Thu Jan 11, 2018 3:53 am
Forum: Music Tech DIY
Topic: [interest check] hexinverter Mutant CLAP DIY
Replies: 120
Views: 13411

Well I certainly have a working module here - and I don't recall there being any major issues - so fingers crossed it should cover most of your bases! You'll definitely need a tayda order or similar to complement this though (from memory - IC sockets, connectors, LEDs, pots at least!). :tu:
by xahdrez
Wed Jan 10, 2018 8:19 am
Forum: Music Tech DIY
Topic: [interest check] hexinverter Mutant CLAP DIY
Replies: 120
Views: 13411

From memory, this was compiled of all the mouser parts on the bom on the hexinverter site (i.e. not got all the tayda components) https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=409759AC63 I wouldn't use this unless you are prepared to verify it against the bom - it comes with the ...
by xahdrez
Mon Dec 18, 2017 8:08 am
Forum: Ciat-Lonbarde
Topic: Sidrassi schematic diagram at last
Replies: 3
Views: 957

Thanks Richard - interesting stuff, much appreciated! Going to have to try bread-boarding some of it!
by xahdrez
Wed Dec 13, 2017 4:23 pm
Forum: Music Tech DIY
Topic: [IC] Euro panels for Ryk's M185 sequencer
Replies: 45
Views: 2239

*edit - electro-music forum logon issues resolved - thanks to a kind wiggler*

I’m in for a panel (and panel pcb if they happen)
by xahdrez
Tue Dec 12, 2017 2:35 am
Forum: Music Tech DIY
Topic: [IC] Euro panels for Ryk's M185 sequencer
Replies: 45
Views: 2239

I’m interested in panel and panel pcb - just need to sort myself with an electro music logon first! For some reason it’s taking a while to verify my account, but assuming that goes okay i’m in!
by xahdrez
Thu Oct 05, 2017 6:25 am
Forum: Music Tech DIY
Topic: Hexinverter Mutant Snare DIY Calibration ??
Replies: 2
Views: 401

I'd also be interested on hearing how others have done theirs - I like how mine is sounding, but feel I could still go back and improve it a little! :tu:

I thought I saw a thread about this already, but can't seem to locate it now - maybe it was another one of the mutants? :zombie:

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