Erica Synths DIY opensource

From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive!

Moderators: luketeaford, Joe., lisa, Kent

User avatar
Girts23
Wiggling with Experience
Posts: 379
Joined: Mon May 20, 2013 2:22 am

Erica Synths DIY opensource

Post by Girts23 » Fri Jul 10, 2020 6:24 am

Image
Dear colleagues,
as Erica Synths discontinues its legacy DIY eurorack projects, we decided to make them opensource. We created Gerber files for PCB-made front panels and did slight changes in module design in order to get rid of custom and rare components, however some modules still require rare ICs and Delay module - a pre-programmed MCU board, which are available on www.ericasynths.lv.
Projects are available on https://github.com/erica-synths/diy-eurorack, and each project folder contains complete information and files to build a module: schematics, Gerber files for a front panel, Gerber files for PCBs, BOMs, component placement with values and designators and assembly manuals (please, note that some manuals are designed for older module versions).
By making these projects open source, Erica Synths accepts third party use for personal, educational or commercial purposes.
Erica Synths will not provide any support for these projects, please, refer to build threads here on Muffwiggler for information on build nuances, troubleshooting, part availability or alternatives.
Open source projects are:
Bassline – all in one synth voice for acid basslines and drones
BBD delay/flanger – all analogue effects unit based on V3205 BBD IC Delay – tape and digital delay unit with tap tempo, tempo sync, reverse, hold and add functions
Dual VCA – Polivoks architecture inspired dual VCA, rare Russian differential opamps are now replaced with AS3330
Envelope – recreation of Polivoks envelope generator with loop and end of attack functions
MIDI-CV – Polivoks functionality inspired dual MIDI-CV converter with glide function
Mixer – simple 3 chanel audio mixer
Modulator – Polivoks functionality inspired LFO, noise and S&H module
Output – Output module with headphone amplifier
Polivoks VCF – authentic recreation of the Polivoks VCF
Swamp – our take of Wogglebug module with lots of unique extras
VCO3 – Polivoks inspired VCO with nice extra – VCO Sync input

Thank you all for you support previously!
We, in collaboration with Riga Technical University, are now working on educational DIY kits for simple and affordable eurorack modules. We plan to announce them this Autumn.

Girts and Erica Synths team.

ixtern
Common Wiggler
Posts: 228
Joined: Mon Jan 22, 2018 4:34 am

Re: Erica Synths DIY opensource

Post by ixtern » Fri Jul 10, 2020 6:33 am

Great idea, thanks.
It would be nice to have a source code for the MIDI2CV module also (only hex is available) to customize it and maybe to fix some errors (module sometimes is going "wild" and refuses to work properly).
IMG_20200616_111235.jpg
You do not have the required permissions to view the files attached to this post.

adam
Super Deluxe Wiggler
Posts: 2956
Joined: Wed Dec 25, 2013 6:24 am

Re: Erica Synths DIY opensource

Post by adam » Fri Jul 10, 2020 8:18 am

Great idea, thanks :)

User avatar
Girts23
Wiggling with Experience
Posts: 379
Joined: Mon May 20, 2013 2:22 am

Re: Erica Synths DIY opensource

Post by Girts23 » Fri Jul 10, 2020 9:32 am

ixtern wrote:
Fri Jul 10, 2020 6:33 am
Great idea, thanks.
It would be nice to have a source code for the MIDI2CV module also (only hex is available) to customize it and maybe to fix some errors (module sometimes is going "wild" and refuses to work properly).
IMG_20200616_111235.jpg
Yes, the code is in the MIDI-CV folder.
Enjoy!

User avatar
Overand
Common Wiggler
Posts: 228
Joined: Mon Jul 02, 2012 6:29 pm
Location: Maine, United States

Re: Erica Synths DIY opensource

Post by Overand » Fri Jul 10, 2020 9:53 am

This is such a great thing to do - thank you a ton!
Girts23 wrote:
Fri Jul 10, 2020 9:32 am
Yes, the code is in the MIDI-CV folder.
Enjoy!
I only saw the .hex, not the source itself - maybe it’s missing?
Attributes:They/them, Queer, Enby, Poly*, Anti-hierarchy, Nature/Tech Weirdo
Sites: overand.com | SoundCloud | YouTube ModularGrid: MOTM | Euro
WTB: Euro VCAs, Mixers, Env Followers & Interfaces.
Building the modular since ~2003

ixtern
Common Wiggler
Posts: 228
Joined: Mon Jan 22, 2018 4:34 am

Re: Erica Synths DIY opensource

Post by ixtern » Fri Jul 10, 2020 10:45 am

Girts23 wrote:
Fri Jul 10, 2020 9:32 am
ixtern wrote:
Fri Jul 10, 2020 6:33 am
Great idea, thanks.
It would be nice to have a source code for the MIDI2CV module also (only hex is available) to customize it and maybe to fix some errors (module sometimes is going "wild" and refuses to work properly).
IMG_20200616_111235.jpg
Yes, the code is in the MIDI-CV folder.
Enjoy!
And where exactly is the source code? I can't find it...

User avatar
EATyourGUITAR
has no life
Posts: 5480
Joined: Tue Aug 31, 2010 12:24 am
Location: Providence, RI, USA

Re: Erica Synths DIY opensource

Post by EATyourGUITAR » Fri Jul 10, 2020 11:08 am

I added micro swamp to my list of future projects.
WWW.EATYOURGUITAR.COM <---- MY DIY STUFF

KSS
Super Deluxe Wiggler
Posts: 2760
Joined: Mon Jan 25, 2016 7:28 am

Re: Erica Synths DIY opensource

Post by KSS » Fri Jul 10, 2020 2:19 pm

@Girts23
:tu:

mongrol
Common Wiggler
Posts: 146
Joined: Wed Oct 28, 2015 11:44 pm

Re: Erica Synths DIY opensource

Post by mongrol » Sat Jul 11, 2020 2:19 am

Awesomely generous and most y33tworthy. Thank you Erica Synths.

User avatar
autodafe
Wiggling with Experience
Posts: 323
Joined: Mon Oct 02, 2017 3:14 am
Location: Italy
Contact:

Re: Erica Synths DIY opensource

Post by autodafe » Sat Jul 11, 2020 9:01 am

coooooooollll !! thx a lot

socom93
Common Wiggler
Posts: 63
Joined: Sun Mar 24, 2019 1:19 pm
Location: France

Re: Erica Synths DIY opensource

Post by socom93 » Sat Jul 11, 2020 9:25 am

Thanks a lot Erica synth ! Really nice of you !

User avatar
Stoneyards
Learning to Wiggle
Posts: 48
Joined: Fri Oct 18, 2019 6:37 pm
Location: Seattle

Re: Erica Synths DIY opensource

Post by Stoneyards » Sat Jul 11, 2020 10:36 am

Props to you for supporting experimentation and education in the community!

User avatar
EATyourGUITAR
has no life
Posts: 5480
Joined: Tue Aug 31, 2010 12:24 am
Location: Providence, RI, USA

Re: Erica Synths DIY opensource

Post by EATyourGUITAR » Sun Jul 12, 2020 8:48 pm

is there a limit to how many swamp panels I can buy?
WWW.EATYOURGUITAR.COM <---- MY DIY STUFF

User avatar
SphericalSound
Wiggling with Experience
Posts: 319
Joined: Thu Feb 01, 2018 9:23 am
Location: Spain

Re: Erica Synths DIY opensource

Post by SphericalSound » Mon Jul 13, 2020 3:02 am

Bravo for Erika

:yay:

Dolphinwolf
Learning to Wiggle
Posts: 14
Joined: Tue Jan 10, 2017 12:30 pm
Location: San Francisco

Re: Erica Synths DIY opensource

Post by Dolphinwolf » Mon Jul 13, 2020 11:19 am

This is great news. How likely is it that someone will order a run of Swamp pcb’s? I would like one.

vaxdatex
Learning to Wiggle
Posts: 33
Joined: Fri Jul 05, 2019 9:56 am
Location: Seattle

Re: Erica Synths DIY opensource

Post by vaxdatex » Tue Jul 14, 2020 2:15 pm

This is great news and a great move by the folks at Erica Synths.

Thank you Erica Synths!

User avatar
EATyourGUITAR
has no life
Posts: 5480
Joined: Tue Aug 31, 2010 12:24 am
Location: Providence, RI, USA

Re: Erica Synths DIY opensource

Post by EATyourGUITAR » Tue Jul 14, 2020 8:41 pm

Dolphinwolf wrote:
Mon Jul 13, 2020 11:19 am
This is great news. How likely is it that someone will order a run of Swamp pcb’s? I would like one.
I am thinking about it. I need to look it over some more to see if there are any rare parts or calibration procedures to slow me down. if there is no support then I want to be sure I can follow it through before I jump in.
WWW.EATYOURGUITAR.COM <---- MY DIY STUFF

vaxdatex
Learning to Wiggle
Posts: 33
Joined: Fri Jul 05, 2019 9:56 am
Location: Seattle

Re: Erica Synths DIY opensource

Post by vaxdatex » Wed Jul 15, 2020 8:48 am

I went ahead and added all the content from the zip files into proper github repos for easier ingest into the process and tracking.

https://github.com/vaxdatex

Cheers,
Vax

Dolphinwolf
Learning to Wiggle
Posts: 14
Joined: Tue Jan 10, 2017 12:30 pm
Location: San Francisco

Re: Erica Synths DIY opensource

Post by Dolphinwolf » Wed Jul 15, 2020 12:01 pm

Looks like the sample and hold chip is hard to find but I wonder weather the TI LF398 is a substitute.
Last edited by Dolphinwolf on Wed Jul 15, 2020 5:21 pm, edited 1 time in total.

User avatar
Troubleshooter
Wiggling with Experience
Posts: 366
Joined: Thu Oct 01, 2015 8:21 am
Location: Belgium

Re: Erica Synths DIY opensource

Post by Troubleshooter » Wed Jul 15, 2020 1:37 pm

Thank you very much EricaSynth!

User avatar
EATyourGUITAR
has no life
Posts: 5480
Joined: Tue Aug 31, 2010 12:24 am
Location: Providence, RI, USA

Re: Erica Synths DIY opensource

Post by EATyourGUITAR » Fri Jul 17, 2020 5:07 pm

Dolphinwolf wrote:
Wed Jul 15, 2020 12:01 pm
Looks like the sample and hold chip is hard to find but I wonder weather the TI LF398 is a substitute.
yes but this would require a redesign of the PCB. this was hard to find so I will post it here for your use.
datasheet2.pdf
You do not have the required permissions to view the files attached to this post.
WWW.EATYOURGUITAR.COM <---- MY DIY STUFF

User avatar
KittenVillage
Common Wiggler
Posts: 205
Joined: Sun Feb 17, 2019 10:30 am
Location: Glenshaw, PA
Contact:

Re: Erica Synths DIY opensource

Post by KittenVillage » Fri Jul 17, 2020 5:22 pm

Any word if the MCU for the delay will have a released BOM and the firmware released?


Eurorack is an exercise in delayed desire.

User avatar
Bamboombaps
Wiggling with Experience
Posts: 398
Joined: Wed Sep 16, 2015 7:14 am
Location: Glasgow

Re: Erica Synths DIY opensource

Post by Bamboombaps » Sat Jul 18, 2020 3:26 pm

Thanks!

User avatar
Bamboombaps
Wiggling with Experience
Posts: 398
Joined: Wed Sep 16, 2015 7:14 am
Location: Glasgow

Re: Erica Synths DIY opensource

Post by Bamboombaps » Sat Jul 18, 2020 3:31 pm

vaxdatex wrote:
Wed Jul 15, 2020 8:48 am
I went ahead and added all the content from the zip files into proper github repos for easier ingest into the process and tracking.

https://github.com/vaxdatex

Cheers,
Vax
Is there something wrong with the baseline files? I couldn’t preview the gerber

vaxdatex
Learning to Wiggle
Posts: 33
Joined: Fri Jul 05, 2019 9:56 am
Location: Seattle

Re: Erica Synths DIY opensource

Post by vaxdatex » Sat Jul 25, 2020 10:56 am

Bamboombaps wrote:
Sat Jul 18, 2020 3:31 pm
vaxdatex wrote:
Wed Jul 15, 2020 8:48 am
I went ahead and added all the content from the zip files into proper github repos for easier ingest into the process and tracking.

https://github.com/vaxdatex

Cheers,
Vax
Is there something wrong with the baseline files? I couldn’t preview the gerber
Just looked at a few and github shows the files.

Post Reply

Return to “Music Tech DIY”