electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
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 » The layout factory
808 Bass Drum Clone Eagle PCB & CNC Gcode
Post new topic   Reply to topic
Page 1 of 1 [15 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
jbeuckm



Joined: Nov 30, 2008
Posts: 46
Location: minneapolis
Audio files: 4

PostPosted: Mon Jan 12, 2015 8:45 pm    Post subject: 808 Bass Drum Clone Eagle PCB & CNC Gcode Reply with quote  Mark this post and the followings unread

Here is a bass drum layout for Eurorack power connector:

https://github.com/jbeuckm/808-Bass-Drum



I built this with 2n3904/6. I thought I was buying film capacitors but these turn out to be MLCC. I would be interested to hear opinions on how this sounds (sound sample attached) compared to the film caps / BC546 or original transistors. Sounds like an 808 to me!


808_2n3904_multilayer_ceramics.mp3
 Description:
increase tone, then increase decay, then decrease tone. velocity cv pattern is sent to accent.

Download
 Filename:  808_2n3904_multilayer_ceramics.mp3
 Filesize:  734.75 KB
 Downloaded:  117 Time(s)

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



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Thu Jan 15, 2015 12:59 am    Post subject: Reply with quote  Mark this post and the followings unread

Sounds good for me.
Freakin' good repo by the way. Will suck all of your files Very Happy
Back to top
View user's profile Send private message
Snaper



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Thu Jan 15, 2015 2:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Love the curved traces.
Did you etched this board?
Looks great Very Happy

Any "test-results" about the snare?

Future plans for hats?
Back to top
View user's profile Send private message
jbeuckm



Joined: Nov 30, 2008
Posts: 46
Location: minneapolis
Audio files: 4

PostPosted: Thu Jan 15, 2015 8:45 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the feedback! Yep - the sample is from the board I etched from the eagle files. I am debugging the snare right now - had some mistakes in the schematic. Then rimshot/clave and then hats.
Back to top
View user's profile Send private message
Snaper



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Thu Jan 15, 2015 8:49 am    Post subject: Reply with quote  Mark this post and the followings unread

jbeuckm wrote:
Thanks for the feedback! Yep - the sample is from the board I etched from the eagle files. I am debugging the snare right now - had some mistakes in the schematic. Then rimshot/clave and then hats.

Yeah!
Nice!
I've added another pot between accent in and + 12, just like in the stripboard version.
Back to top
View user's profile Send private message
jbeuckm



Joined: Nov 30, 2008
Posts: 46
Location: minneapolis
Audio files: 4

PostPosted: Thu Jan 15, 2015 10:57 am    Post subject: Reply with quote  Mark this post and the followings unread

Ah that is a good add - then normal it to a switched accent input jack. Submit a pull request?
Back to top
View user's profile Send private message
Snaper



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Thu Jan 15, 2015 12:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

Another great idea!
Back to top
View user's profile Send private message
jbeuckm



Joined: Nov 30, 2008
Posts: 46
Location: minneapolis
Audio files: 4

PostPosted: Thu Jan 15, 2015 9:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

Don't etch that snare yet - the 72's are all flipped Sad

Here is a sound sample with a very ugly kludged board. Have to redo the layout...


808_sn_2n3904_mlcc.mp3
 Description:

Download
 Filename:  808_sn_2n3904_mlcc.mp3
 Filesize:  734.73 KB
 Downloaded:  73 Time(s)


Last edited by jbeuckm on Thu Jan 15, 2015 10:13 pm; edited 1 time in total
Back to top
View user's profile Send private message
Snaper



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Thu Jan 15, 2015 9:23 pm    Post subject: Reply with quote  Mark this post and the followings unread

jbeuckm wrote:
Don't etch that snare yet - the 72's are all flipped Sad

OK. will wait
Back to top
View user's profile Send private message
jbeuckm



Joined: Nov 30, 2008
Posts: 46
Location: minneapolis
Audio files: 4

PostPosted: Tue Jan 27, 2015 8:19 am    Post subject: Reply with quote  Mark this post and the followings unread

Snaper,

I rerouted the snare but haven't built the new version yet - soon. I also built the rimshot/clave but only the clave is working. Would you want to build it and help me debug? I checked the schematic a lot so I might just have a bad part or connection.

https://github.com/jbeuckm/808-Rimshot-Clave

Open hihat sounds good. Will test the closed tonight:

https://github.com/jbeuckm/808-Hihats
Back to top
View user's profile Send private message
Snaper



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Tue Jan 27, 2015 8:56 am    Post subject: Reply with quote  Mark this post and the followings unread

Will check them, but can't etch them right now, too much stuffs on the schefule!
Will look for the schemo;)
Back to top
View user's profile Send private message
Snaper



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Wed Jan 28, 2015 4:10 am    Post subject: Reply with quote  Mark this post and the followings unread

Checked the updated schemos, they're getting better and better.
Still love the curved traces.

Made some minor changes, basicall put 16 mm pots and align them to make the PCB panel mountable.

Checked also the Clave Rim schemo. For the first, looks OK.

Fortunately, the problem should be somewhere before the switch.

Which one is the rimshot, top or bottom part?
Back to top
View user's profile Send private message
jbeuckm



Joined: Nov 30, 2008
Posts: 46
Location: minneapolis
Audio files: 4

PostPosted: Wed Jan 28, 2015 8:16 am    Post subject: Reply with quote  Mark this post and the followings unread

Hihats work well. Here is a sample of the bass/snare/clave/hihats together. I am moving everything toward 16mm pots for panel mount too. I have to reroute a few signals because there is only room for one trace in front of the pot holes.


808_bd_sn_cl_hh 1.mp3
 Description:

Download
 Filename:  808_bd_sn_cl_hh 1.mp3
 Filesize:  734.73 KB
 Downloaded:  65 Time(s)

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



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Wed Jan 28, 2015 9:44 am    Post subject: Reply with quote  Mark this post and the followings unread

jbeuckm wrote:
Hihats work well. Here is a sample of the bass/snare/clave/hihats together. I am moving everything toward 16mm pots for panel mount too. I have to reroute a few signals because there is only room for one trace in front of the pot holes.

Awesome!
Did you updated all of the layouts?
What about the rim?
Back to top
View user's profile Send private message
Snaper



Joined: Feb 28, 2014
Posts: 140
Location: Hungary

PostPosted: Thu Mar 26, 2015 3:33 am    Post subject: Reply with quote  Mark this post and the followings unread

Oh, almost missed this thread?
Any news?
Im in the rack build business, would be great to build a separate box ...
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic
Page 1 of 1 [15 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 » The layout factory
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
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


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