electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » DIY Hardware and Software
ACX MIDI2CV PCB layout for eurorack
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 1 of 1 [2 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
fitzgreyve



Joined: Jul 01, 2013
Posts: 2
Location: UK

PostPosted: Wed Jul 03, 2013 4:06 am    Post subject: ACX MIDI2CV PCB layout for eurorack Reply with quote  Mark this post and the followings unread

My first post, so hopefully something useful.....

Attached are PCB layouts for a (slightly modified) version of the ACX MIDI2CV design for a 6HP eurorack panel with Doepfer power connector.

The mod. consists of replacing the four CA3140 in the original design with a quad op-amp to save space. This removes the CV offset adjust capability, but I've not noticed any serious issues with this.

There are two PCBs, one holding the PIC, DACs, Op-amp. The other holds the gate output transistors and LEDs.

The PCBs are designed for Cliff CL1384 S6/BB jack sockets (the same ones used by Doepfer?).

Other components are as on the ACX design:
http://acxsynth.com/midi2cv/midi2cvfr.htm

Built this about a week ago, fully working first time with no problems.

PCB layouts and build notes are attached (PCB print sizing is in the build notes).

I programmed the PIC16F88 using a cheap Chinese JDM (serial port) programmer using the latest version of PICPGM - no problems, worked first time.

If any questions - read the build notes first Very Happy

Attachments:
PCB layouts - 2 x GIF file - ready to print for press'npeel or similar
Build notes - PDF (including correct sizing for above PCB layouts)
Example panel layout (6HP).

These are provided for personal non-commercial use only.


ACX Midi - Main.gif
 Description:
 Filesize:  245.44 KB
 Viewed:  220 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

ACX Midi - Main.gif



ACX Midi - Gate.gif
 Description:
 Filesize:  158.11 KB
 Viewed:  206 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

ACX Midi - Gate.gif



P7020004.JPG
 Description:
 Filesize:  120.57 KB
 Viewed:  134 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

P7020004.JPG



ACX MIDI2CV.fpd
 Description:

Download
 Filename:  ACX MIDI2CV.fpd
 Filesize:  1.4 KB
 Downloaded:  204 Time(s)


ACX MIDI2CV Eurorack.pdf
 Description:

Download
 Filename:  ACX MIDI2CV Eurorack.pdf
 Filesize:  1.16 MB
 Downloaded:  392 Time(s)

Back to top
View user's profile Send private message
elmegil



Joined: Mar 20, 2012
Posts: 2177
Location: Chicago
Audio files: 16

PostPosted: Wed Jul 03, 2013 1:09 pm    Post subject: Reply with quote  Mark this post and the followings unread

That's good work Smile

Anybody interested in this should know there's also another Euro option:

http://cv.hexinverter.net/?page=projects&id=midi2cv-v10

There are some updates and bug fixes to the firmware behavior, but unfortunately Alain isn't going to open source the new version (4.0). So there's a trade off there beyond just cost.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 1 of 1 [2 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use