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 Forum index » DIY Hardware and Software
Appendage Ribbon Controller PC Board Orders for 2017
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State Machine
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Joined: Apr 17, 2006
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PostPosted: Tue Jul 25, 2017 10:28 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
1) there is "octave", "semitone" and "fine" on the panel, but I only see "coarse" and "fine" in the schematic.


Looking at a portion of my panel, I have two pots labeled COARSE and FINE and these have to do with the amount of DC voltage OFFSET you can dial into the MIX output. This agrees with the schematic. Thus, FINE maps to FINE OFFSET and COARSE maps to COARSE OFFSET Very Happy

Looking at the Euro panel, the FINE control has been preserved but the COARSE has been replaced by possibly the OCTAVE control. The SEMITONE has been added. In any event, this appears to be a modification of deviation from the original intent. Thus, FINE maps to FINE and COARSE maps to OCTAVE (?) and SEMITONE is an added tap?

Anyone else want to take a crack at it?


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LFLab



Joined: Dec 17, 2009
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Location: Rosmalen, Netherlands

PostPosted: Wed Jul 26, 2017 11:59 am    Post subject: Reply with quote  Mark this post and the followings unread

Had a quick look at the schematics, interesting!
I will say though LM78l10 is quite a rare part, a quick check learned that neither Mouser nor Conrad and Reichelt (I am in Europe) have it. There's also a low power version of the LM317, in a TO92 package, not sure if that's a lot easier to get, and you'd need a couple more resistors, but it is lower noise (might be interesting for a reference voltage).
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sixbyseven



Joined: Jan 28, 2016
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Location: hamilton, Ontario

PostPosted: Wed Jul 26, 2017 6:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

LFLab wrote:
Had a quick look at the schematics, interesting!
I will say though LM78l10 is quite a rare part, a quick check learned that neither Mouser nor Conrad and Reichelt (I am in Europe) have it. There's also a low power version of the LM317, in a TO92 package, not sure if that's a lot easier to get, and you'd need a couple more resistors, but it is lower noise (might be interesting for a reference voltage).



This one could work from mouser: http://ca.mouser.com/ProductDetail/Texas-Instruments/UA78L10ACLP/?qs=sGAEpiMZZMtYFXwiBRPs09RzkWTcStIH

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State Machine
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PostPosted: Fri Jul 28, 2017 7:30 am    Post subject: Reply with quote  Mark this post and the followings unread

Yes, the UA78L10 will work just fine. Thanks for finding the alternate part number Very Happy
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State Machine
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PostPosted: Sat Jul 29, 2017 9:50 am    Post subject: Reply with quote  Mark this post and the followings unread

Good news !!! too much coffee I have a limited run of 20 Appendage Rev. "J" PC Boards in manufacture. They shall be a 2 Layer with a BLUE solder mask. After inspection I will put them up for sale for $38.00 plus shipping cost. All details will be in a new post. Hang tight for more details. I expect to have the boards in about 10 days from date of this post.

Bill
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philpeery



Joined: Nov 08, 2006
Posts: 133
Location: new jersey, usa

PostPosted: Tue Aug 01, 2017 9:09 pm    Post subject: Appendage Boards? YES please! Reply with quote  Mark this post and the followings unread

Hi Bill,

If you do another small run of through hole boards, I would definitely take 2! I've already built a pair with a 500mm and 1000mm soft-pot with 5U panels, and they are some of the best projects I have ever put together. I am building a small modular for a good friend of mine so we can do music projects over the internet, and it seems that an Appendage is a required module!

Keeping my fingers and toes crossed! Thanks!

Best,
Phil
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State Machine
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PostPosted: Wed Aug 02, 2017 5:23 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
If you do another small run of through hole boards, I would definitely take 2! I've already built a pair with a 500mm and 1000mm soft-pot with 5U panels, and they are some of the best projects I have ever put together. I am building a small modular for a good friend of mine so we can do music projects over the internet, and it seems that an Appendage is a required module!

Keeping my fingers and toes crossed! Thanks!


Hi Phil

I should be getting the through hole version boards by the end of this week. Payment details are at the top of this thread. Do you have a post on this project? I would like to see the 5U panel softpot arrangement. YOu can PM me or just post a PIC here. Cool

Bill
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philpeery



Joined: Nov 08, 2006
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PostPosted: Wed Aug 02, 2017 11:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks Bill, can't wait to get another set!

So my panel was patterned after the Sythesizers.com panel that Scot Solida did. Plus, some other guy (ahem) did an awesome gold one that also had influence on my panel as well! Since I am a MOTM 5U guy, I did have to make some adjustments to get everything in. I will dig up the design file and post it when I get some time.

Best,
Phil
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State Machine
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PostPosted: Thu Aug 03, 2017 5:24 pm    Post subject: Reply with quote  Mark this post and the followings unread

Boards are now available for sale. Please go to Page 1 of this thread for ordering details.

Thank You Very Happy

Bill


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PakirRS



Joined: Aug 08, 2017
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PostPosted: Tue Aug 08, 2017 4:16 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm almost finished converting the latest schematic to DipTrace using just SMD parts. Right now it looks like it would fit on perhaps 100x100mm.
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BananaPlug



Joined: Jul 04, 2007
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PostPosted: Thu Aug 10, 2017 11:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
100x100mm.

Wow. That's more like it. The original always seemed like it was both an imposing thing to build and huge. Best of luck.
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State Machine
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PostPosted: Fri Aug 11, 2017 3:59 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
I'm almost finished converting the latest schematic to DipTrace using just SMD parts. Right now it looks like it would fit on perhaps 100x100mm.


welcome and thanks for joining the EM forum Cool Sounds like some great work here. Are you planning on using finer pitched headers to save on space? Also, SMD headers can also be used. Would like to see the layout when completed.
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flab



Joined: Feb 13, 2012
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PostPosted: Sat Aug 12, 2017 5:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

looks like there are going to be sevelar pcbs version for that beautiful project Twisted Evil
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PakirRS



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PostPosted: Mon Aug 14, 2017 3:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'm using SMD 2.54mm headers on the reverse side of the board. That way a simple board with panel mounted stuff can be made easily.

I won't include the MOTM or other format power headers. The 10-pin box header for Eurorack is taking up enough space as it is.

I can post the schematic file (DipTrace .dch) if anyone would like to check for errors. I send free boards for the effort perhaps? Smile
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flab



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PostPosted: Tue Aug 15, 2017 3:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

i thought elegil doing that SMD pcb run, oh well.

State machine, do you have any pictures of any gallery of past build machines using your beautiful project?
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elmegil



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PostPosted: Tue Aug 15, 2017 4:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

flab wrote:
i thought elegil doing that SMD pcb run, oh well.

State machine, do you have any pictures of any gallery of past build machines using your beautiful project?


I'm much much slower than anyone else looking at this Very Happy
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PakirRS



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PostPosted: Wed Aug 16, 2017 5:53 am    Post subject: Reply with quote  Mark this post and the followings unread

It's a busy board with wires all over the place, but current format is 3x3.6".

I'm not really concerned with others doing the same board. I'm only doing this since I've made it a mission to design all the boards in my synth myself.
The only reason I posted here is because people were asking for an SMD version and I always order 5 or 10 pcs anyway and I won't build 5 or 10 ribbon controllers Smile

Last edited by PakirRS on Fri Aug 18, 2017 12:13 pm; edited 1 time in total
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elmegil



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PostPosted: Wed Aug 16, 2017 6:35 am    Post subject: Reply with quote  Mark this post and the followings unread

I certainly don't have any heartburn over other people doing layouts. As I say I'm going to be slow, I'd be surprised if I have anything before 6 months.
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State Machine
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PostPosted: Sat Sep 09, 2017 6:50 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
It's a busy board with wires all over the place, but current format is 3x3.6".

I'm not really concerned with others doing the same board. I'm only doing this since I've made it a mission to design all the boards in my synth myself.
The only reason I posted here is because people were asking for an SMD version and I always order 5 or 10 pcs anyway and I won't build 5 or 10 ribbon controllers Smile


Any more progress on this version?
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PakirRS



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PostPosted: Mon Sep 11, 2017 12:43 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm waiting for the boards to arrive at the moment.. I might have them within 2wks or so.

Hopefully there won't be too many errors Smile

The dimensions are 91x81mm.


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State Machine
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PostPosted: Mon Sep 11, 2017 10:29 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
I'm waiting for the boards to arrive at the moment.. I might have them within 2wks or so.

Hopefully there won't be too many errors Smile

The dimensions are 91x81mm.


The layout looks very good !! Certainly more compact. Eager to see your post on the results. I like the use of the SMT headers opposite component side to allow more efficient use of board real estate. I did not take a deep dive but did you add the expansion signals that I had on the through hole board?
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AlanP



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PostPosted: Mon Sep 11, 2017 7:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Dayum, that is densely compacted.
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PakirRS



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PostPosted: Tue Sep 12, 2017 4:37 am    Post subject: Reply with quote  Mark this post and the followings unread

State Machine wrote:
I did not take a deep dive but did you add the expansion signals that I had on the through hole board?


I don't think so. If they're not on the headers, they were left out..
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