[Expander available] "Anushri" PCB's with eurorack

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stringsthings
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Post by stringsthings » Sat Dec 03, 2016 1:46 am

Awesome! Those red boards look great. I'm ready to put my build into the eurorack to let it play with the other modules. This project has been a real joy. Thanks so much for putting this together.

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sumdumguy
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Post by sumdumguy » Sat Dec 10, 2016 8:15 pm

I am looking for someone to program/flash the atmega for me. I have made two attempts without success and need to determine if there is somene else wrong with my build. PM me if you are willing to help.thanks, eric

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audiohawk
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Post by audiohawk » Sun Dec 11, 2016 3:34 am

Expander boards looking good.
Thanks for the update and Thank you for your work :hail:

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AdrianH
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Post by AdrianH » Thu Dec 15, 2016 4:49 am

I have some skiffs and panels left for Anushri and Anookum.
If interested then let me know.
Image Image

Ilpolainen
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Pcbs

Post by Ilpolainen » Sun Feb 12, 2017 8:10 am

AdrianH wrote:I have some skiffs and panels left for Anushri and Anookum.
If interested then let me know.
Image Image
Hi!

I would be interested in buying your Anushri desktop -box, and would also like to know where i can buy pcbs suitable for it.

You can email me:
pohjolanilmari@gmail.com

BR. Ilmari Pohjola

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brawnywynn
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Post by brawnywynn » Fri Mar 10, 2017 12:54 pm

sumdumguy

did you ever successfully flash your atmega?

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stringsthings
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Post by stringsthings » Sat Mar 11, 2017 1:53 am

Any news on the expander boards?

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skookum
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Post by skookum » Sat Mar 11, 2017 11:40 am

It's done and BOM is done.
Needs a panel but if someone doesn't need panel, PM me! :tu:
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br1qbat
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Post by br1qbat » Sun Mar 12, 2017 7:28 am

Adrian - How much for a euro panel for the anookum?

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ground_state
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V2164D

Post by ground_state » Tue Mar 14, 2017 12:44 pm

This is from the wayback machine, but I really need to understand it:
skookum wrote:I learned about >>this<< recently. If I had been aware of it at the time I would have implemented it on the board. As it is now either beware or implement the diode as advised by the link.
- Is this even necessary for an unracked unit?
- Is, for example, soldering a Schottky diode directly between pins 8 & 9 on the bottom side of the board a valid solution?
- Equally important: *which* Shottky diode is the correct part? The referenced website mentions BAT85 (fix V- disconnected) and 1N5817 (to add? reverse voltage protection).

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skookum
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Post by skookum » Tue Mar 14, 2017 2:02 pm

-In the interest of keeping the magic smoke inside your VCA chip if your negative rail fails for some reason it is a good idea.
-Yes
-Either is OK. You don't have to use a specific part no, just make sure you use a Schottky diode. 1N5817, 5818 and 5819 all work and are easily found.
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br1qbat
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Post by br1qbat » Thu Mar 16, 2017 9:29 am

I was perusing the BOM, and ic6 is named only as a quad vca chip. Im assuming this is a 2164? I dont know any others that fit that description, but wanted to he sure

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skookum
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Post by skookum » Thu Mar 16, 2017 10:33 am

br1qbat wrote:I was perusing the BOM, and ic6 is named only as a quad vca chip. Im assuming this is a 2164? I dont know any others that fit that description, but wanted to he sure
That is correct. Either the Coolaudio V2164 or (if you can find one) Analog Devices SSM2164.
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ground_state
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Thanks!

Post by ground_state » Thu Mar 16, 2017 11:03 am

Very clear. Thanks!
skookum wrote:-In the interest of keeping the magic smoke inside your VCA chip if your negative rail fails for some reason it is a good idea.
-Yes
-Either is OK. You don't have to use a specific part no, just make sure you use a Schottky diode. 1N5817, 5818 and 5819 all work and are easily found.

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br1qbat
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Post by br1qbat » Fri Mar 17, 2017 7:33 am

Snookum - do you still have any euro panels available?

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ground_state
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Spacer/sizing in standalone

Post by ground_state » Mon Mar 20, 2017 1:27 pm

Ugh. I realized I had a problem with the spacers after I'd already soldered the headers. I ordered 20mm spacers after looking at the MI build docs again. Now that I'm completely done *except* for final assembly with the case, I came back here to read through everything and realized that the *headers* are >10mm on purpose.
So, long story short, HELP.
Pololu cut and engraved the case (can't recommend them highly enough), so there's no re-doing that. Any suggestions on how to fit this guy together in the case, short of de-soldering the headers and replacing with low-profile (horrors)?

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windspirit
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Post by windspirit » Mon Mar 20, 2017 1:58 pm

Quick question, is the BOM roughly the same as a normal Anushri BOM? I am finishing up an Anushri build for a client and wanted to build my anookum at the same time. I was hoping to just load up the anookum BOM and then add parts to it as needed for the Anushri build. I know that the jacks and buttons are different but the core components of the synth are the same correct?

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skookum
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Re: Spacer/sizing in standalone

Post by skookum » Mon Mar 20, 2017 2:20 pm

ground_state wrote:Ugh. I realized I had a problem with the spacers after I'd already soldered the headers. I ordered 20mm spacers after looking at the MI build docs again. Now that I'm completely done *except* for final assembly with the case, I came back here to read through everything and realized that the *headers* are >10mm on purpose.
So, long story short, HELP.
Pololu cut and engraved the case (can't recommend them highly enough), so there's no re-doing that. Any suggestions on how to fit this guy together in the case, short of de-soldering the headers and replacing with low-profile (horrors)?
If I understand it correctly you have used the 12mm spacers in the middle of the "sandwich" and now you are finding it to be to tall for the case? If that is the case your best bet is to get 18mm spacers. Does it seem your jacks and switch would be functional still if offset 2mm vertically?

Apologies for not highlighting this issue better. :doh:
windspirit wrote:Quick question, is the BOM roughly the same as a normal Anushri BOM? I am finishing up an Anushri build for a client and wanted to build my anookum at the same time. I was hoping to just load up the anookum BOM and then add parts to it as needed for the Anushri build. I know that the jacks and buttons are different but the core components of the synth are the same correct?
Yep, you got it!
"Flux it, we'll do it live!" - Instagram - Github

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ground_state
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Re: Spacer/sizing in standalone

Post by ground_state » Mon Mar 20, 2017 6:16 pm

skookum wrote:
ground_state wrote:Ugh. I realized I had a problem with the spacers after I'd already soldered the headers. I ordered 20mm spacers after looking at the MI build docs again. Now that I'm completely done *except* for final assembly with the case, I came back here to read through everything and realized that the *headers* are >10mm on purpose.
So, long story short, HELP.
Pololu cut and engraved the case (can't recommend them highly enough), so there's no re-doing that. Any suggestions on how to fit this guy together in the case, short of de-soldering the headers and replacing with low-profile (horrors)?
If I understand it correctly you have used the 12mm spacers in the middle of the "sandwich" and now you are finding it to be to tall for the case? If that is the case your best bet is to get 18mm spacers. Does it seem your jacks and switch would be functional still if offset 2mm vertically?

Apologies for not highlighting this issue better. :doh:
No prob, it's down to my lack of due diligence :bang: . I worked out the 18mm standoff idea after I'd already posted, but thanks for the speedy reply nonetheless :tu:
It looks like everything should space out OK.

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ground_state
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Finally done!

Post by ground_state » Fri Apr 14, 2017 4:26 pm

So it all worked out in the end. My first build of something like this, and my first soldering since I was a kid (it's been a little while :) ).
The graphics on the case/panel are an amalgam of Snookum and Olivier's modular panels and Olivier's case panel. The case and panel were fabbed and engraved by Pololu (highly recommended) from Illustrator files, total cost $60. I hand-colored everything using Sakura fineliners.
Power tested out good the first time! The only reason I had no sound (as it turned out) was bad flash commands. I got it right on the third try using info from Pololu's website (I also bought their AVR programmer).
On to the good stuff (not sure how image posting/linking works here, so these are Flickr links):
Money shot -
Panel -

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skookum
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Post by skookum » Fri Apr 14, 2017 7:41 pm

Looks *fantastic*! Great job on the case! :yay:
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ground_state
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Post by ground_state » Sat Apr 15, 2017 9:32 am

skookum wrote:Looks *fantastic*! Great job on the case! :yay:
:party:
Alll due to the generosity and hard work of you and Olivier :hail:

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windspirit
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Post by windspirit » Sun Apr 23, 2017 12:25 pm

Hey so I realize that this question is probably better posed to the MI forum but I figured Id ask here in case someone already figured it out. I have a bunch of B100k pots I bought in bulk,will those work instead of the 10k pots? I figure for the digital stuff they are mostly voltage dividers but for the analog stuff it may be more tricky. Obviously the audio taper would have to be a different pot.

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skookum
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Post by skookum » Mon Apr 24, 2017 1:45 pm

I don't have the schematic in front of me, so it needs to be confirmed but I believe the vast majority acts as simple voltage divider. Except the output volume, resonance, wave, and sub level.
"Flux it, we'll do it live!" - Instagram - Github

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skookum
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Post by skookum » Tue Apr 25, 2017 11:39 am

Unfortunately it appears everything works as intended. :party:

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