Buchla support for the Nothern Modular 2OC

[synthi]

Using both buchal flags dont work in the buchla module:
#define BUCHLA_SUPPORT --> this is for eurorack modules only, if you want 1.2V scaling. so - leave this one commented .
#define BUCHLA_4U --> this is the one for Buchla 4U, the northermodular 2OC buchla module

Also added the option for the OC in the left side.

[synthi]

sorry the second commin should not be here! just testing the 2OC Left flag instead the Flip180

[djphazer]

No worries! I think I see the general idea, just gotta find the right cocktail of build flags for your specific hardware variant... Seems like there are 3 different types of Buchla O_C then? 4 including the "left side" version?

Edit: just realized this isn't even pertaining to the Easel cardOC thing

[synthi]

Easel OC card is a card for the 208 with one OC, I don´t have it, it have its own flag I think.
Then there is the 2OC, a dual OC in 4U buchla format, thats the one I own and the most common, had several revisions and also a DIY version run. Because its dual it have and OC in the left and anoher one in the righ sid, the left one have the encoder mirrored that why it have its own flag for the left side.
...And the there is the "buchla support" flag, that have nothing to do with the buchla modules, is just a kind of hack for having 1.2v/oct in the original eurorak module.
Hope is more clear now!! thanks!!

[synthi]

So:
-for cOC (easel card) the flags needed are BUCHLA_cOC and BUCHLA_4U
-for 2OC (dual OC in 4U module) the flag needed is BUCHLA_4U for the right side, and BUCHLA_4U and NORTHERNLIGHT_2OC_LEFTSIDE for the left side.

Then, for people who wants 1.2V/oct in the stock OC, can use the flag BUCHLA_SUPPORT

[djphazer]

Just wondering if you needed to enable the DAC8564 flag for the 2OC? Seems like it's necessary for the cOC, and maybe the hOC as well?

I'll be integrating these build options soon.

[synthi]

Thanks!
Some updates here.... had a inverted CV otoput whith the buchla builds until I discovered that for the 2OC the "BUCHLA_cOC" flag must be enable too!

The only thing is that the negative CVs always put out 0 Volts.. Trying the sequencerX all values beloww the "center" position output 0 volts, I think it should scale so the 0 is at the bottom negative value... maybe that because that DAC flag ??? I don´t know...

So I think for all three variants (cOC,hOC,2OC) both "BUCHLA_cOC" and "BUCHLA_4U" must be enabled. And also for the 2OC, becuase its dual it needs the special "NORTHERNLIGHT_2OC_LEFTSIDE" for the left OC firmware only.

[djphazer]

I think DAC8564 may have inverted values... but I'm still not sure which units have it, and how it behaves without the flag. It doesn't seem like the cOC flag should apply for the 2OC.

The 0V center issue within Hemisphere is somewhat a matter of preference, determined by kOctaveZero in OC_DAC.h ... you could set it to 5 instead, but it seems like a baseline of 5 volts would prevent triggers from working... maybe there needs to be a special case to differentiate triggers from full range values on Buchla hardware?

[synthi]

I think DAC8564 may have inverted values... but I'm still not sure which units have it, and how it behaves without the flag. It doesn't seem like the cOC flag should apply for the 2OC.

I don´t know about programming so I can´t speak what things does that flag, but for sure its the only way for have working CV outputs in mine!! notes and quantizers are working fine!

[djphazer]

I've merged this in for v1.8 - 0e48d43
Plus some follow-ups: b3e09bf / bd21695

Proper global configuration for DAC scaling is coming in v2.0

[synthi]

HI Again!! ok, buchla builds in the 1.8 release dont work in 2OC, need to enable -BUCHLA_cOC to make it work, the same as described here:

Thanks! Some updates here.... had a inverted CV otoput whith the buchla builds until I discovered that for the 2OC the "BUCHLA_cOC" flag must be enable too!

The only thing is that the negative CVs always put out 0 Volts.. Trying the sequencerX all values beloww the "center" position output 0 volts, I think it should scale so the 0 is at the bottom negative value... maybe that because that DAC flag ??? I don´t know...

So I think for all three variants (cOC,hOC,2OC) both "BUCHLA_cOC" and "BUCHLA_4U" must be enabled. And also for the 2OC, becuase its dual it needs the special "NORTHERNLIGHT_2OC_LEFTSIDE" for the left OC firmware only.

[djphazer]

oof, ok I guess we'll turn that one on for all 3 builds then! I'll get it right eventually...

[Banshee700]

Hi guys, let me shed some light onto the definitions and why they are there.
Buchla equipment, especially the 200e series, is vulnerable to negative voltages.
So we built the output structure with protected op amps basically flipping the voltages starting with the cardOC and then adapted that to the 2OC V1.5 and newer.
So technically there are even more variations than cardOC, hOC, 2OC_L and 2OC_R :P
The #define BUCHLA_cOC definition does the flip and the #define BUCHLA_4U does the offset , scaling and all of the graphic adaptations to 1,2V.
And both are needed for the all the new ones...

/* ------------ uncomment for use with Northernlight cOC program card: ----------------------------- /
#define BUCHLA_cOC
/ ------------ uncomment for use with Northernlight 4U / cOC : ----------------------------------------------------------------------------------------- */
#define BUCHLA_4U

I just tested o_C-phazerville-v1.8_cOC-ed61862c.hex and it does not work...
Probably the voltages need to be inverted aka #define BUCHLA_cOC is missing.
The hOC also needs some help in the OC_gpio.h :
#define but_top 4
#define but_bot 5
Needs to be flipped to
#define but_top 5
#define but_bot 4

You can send me the releases to go through and check for main issues and I can report back if you like.
And thank you for doing all of this :)

cheers
Sascha

PS : We would love to make an updated T4.0 version and i think I could use your help with that

[djphazer]

Thank you for the guidance! It's possible that some things have deviated from the stock firmware, and I'd like to simplify some of these flags where possible...

I just tested o_C-phazerville-v1.8_cOC-ed61862c.hex and it does not work...
Probably the voltages need to be inverted aka #define BUCHLA_cOC is missing.

It was built with the cOC flag, but I also threw in the DAC8564 flag, which is probably not necessary? Do some of your modules use that DAC?

PS : We would love to make an updated T4.0 version and i think I could use your help with that

Definitely, try it out! I'll do what I can to assist. :)

[Banshee700]

Good morning :) Cool, so what can I do to help ? I really like the idea of making a custom brew firmware as some of our clients always ask for new versions and I am not a programmer. Even keeping a suitable Arduino IDE and Teensyduino at hand has proven a challenge with my new M3 Mac. What i can say is that we never used the DAC8564 in the O_C design They are all based on the DAC8565 , so that flagg can stay on the pole. Also V1 people are really rare...but it might be an idea to include that as an option. That would require the #define BUCHLA_4U and nothing else... Setting that flag moves the range from -3/7 to 0-10V and does all the graphic stuff. You can test that in the calibration menu as it will show the right ranges then For all the new version (hOC1.5,2OC.22 and cardOC.22) both flags need to be set as they deal with the inversion Do you have a version with attenuators or LEDs ? If so you can see that all lights are on when booting the Voltages app or the new Calibr8tor. And regarding the hOC, i made a mistake and flipped the momentary buttons, so we kinda would need an option here too. Maybe we should not call the options Buchla as they are 4UBU or NLM more than that other brand. So my suggestion for options is as following : Lets include these key words and have them apply the options mentioned in brackets if possible NLM-2OC-DIY (just the #define BUCHLA_4U) NLM-2OC-L (both #define BUCHLA_4U and #define BUCHLA_cOC plus the //#define FLIP_180) NLM-2OC-R (both #define BUCHLA_4U and #define BUCHLA_cOC) NLM-cardOC (both #define BUCHLA_4U and #define BUCHLA_cOC) NLM-hOC (both #define BUCHLA_4U and #define BUCHLA_cOC plus a change in the GPio app : (#define but_top 4, #define but_bot 5 need to be flipped to #define but_top 5, #define but_bot 4) I can test these configurations and make sure the core works at least with the classic firmware . Regarding the newer applets, I am almost certain most of the graphic needs reworking. As if they are referring to -3V and the actual voltages are 0V etc. Max and I spent like 3 month on getting the standard ones right :P best Sascha

…

On Thu, Aug 8, 2024 at 10:08 PM Nicholas Michalek ***@***.***> wrote: Thank you for the guidance! It's possible that some things have deviated from the stock firmware, and I'd like to simplify some of these flags where possible... I just tested o_C-phazerville-v1.8_cOC-ed61862c.hex and it does not work... Probably the voltages need to be inverted aka #define BUCHLA_cOC is missing. It was built with the cOC flag, but I also threw in the DAC8564 flag, which is probably not necessary? Do some of your modules use that DAC? PS : We would love to make an updated T4.0 version and i think I could use your help with that Definitely, try it out! I'll do what I can to assist. :) — Reply to this email directly, view it on GitHub <#81 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AG3NMMDJBNLJGPQ76CSFCS3ZQPF37AVCNFSM6AAAAABJLLFCRSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDENZWGU3DQMBZGM> . You are receiving this because you commented.Message ID: ***@***.***>

-- -- kind regards / Viele Grüße Sascha Haber http://northernlightmodular.com/ https://bit.ly/2No5sus - Modular Grid +45 31585333 Copenhagen DK32950523

[synthi]

Hi!
Thanks for your clarifying replies!
have a 2OC 1.5 here, with pots but no leds. Working fine with both Buchla_4U and Buchla_cOc enabled.

What Id like to get is the right voltages for the negative part... ie. the sequecerX that I use a lot only work for the upper part, the lower part are negative values so it does nothing. would be great having all those scaled to 0-10V output. Maybe other applets with bipolar output have the same issues

[Banshee700]

Hi Josue,

There is a change that a lot of the new apps need rework, both in terms of offsets and graphics.
Let's focus on getting the options for the automatic builds sorted and then maybe set up a sheet where we can log graphic and value bugs for each app.
What I can vouch for is the classic apps Max and I redesigned work on all NLM platforms.
Hemisphere had a good run and i sent Jason a 2OC.22 for fine tuning them.
I am happy to do tests myself, if someone else is doing the coding :)

Sascha

[synthi]

Yes! I think automatic build is almost done, just need to add BUCHLA_COC flag to both Buchla L and Buchla R and will work fine!

Love Phazerville + 2oC, it really opened a new world of possibilities in my portable setup: I have a kind of "future easel" with a 208, 2x TSNMs and the 2oC, f.e. thanks to Ebb&LFO I can have a couple of aditional oscillators + 2 sequencers !

[djphazer]

Just pushed some tweaks - a2038af

It looks like the flags for 2OC-R and cardOC are actually identical... is that correct?

Grab the artifact from the workflow run to test - https://github.com/djphazer/O_C-Phazerville/actions/runs/10334428023
(I left out the NLM-DIY build, but there's a configuration in platformio.ini just in case)

Custom Builds with keyword buchla will also include the BUCHLA_cOC flag now, so that should work.

[Banshee700]

That looks good :) Yes, cardOC and 2OC_R are the exact same. I will host the files on our site and duplicate the file with the cardOC named correctly for people to find it easier. Can we change the keywork "buchla" to "NLM" to make it clear this is not Buchla but NorthernLightModular ? Buchla USA was very specific that they do not want our stuff to be put off as theirs... Regarding the applets needing tweaking... Do you have an idea how we could make this possible to track and report issues and is there actually anybody who can fix them ? For example Calibr8tor : Voltage output scaling is good...0.12V per semitone...octaves are also good. But the main voltage starts at 0V and ends at 5V That should start at 0V and go to 10V , not -5V to 5V CV input detection starts at C4 and only goes up to G9....that should start at C0 for 0V These are the kinds of tweaks that are needed for a proper 4UBu integration. Sascha

…

On Sat, Aug 10, 2024 at 11:06 PM Nicholas Michalek ***@***.***> wrote: Just pushed some tweaks - a2038af <a2038af> It looks like the flags for 2OC-R and cardOC are actually identical... is that correct? Grab the artifact from the workflow run to test - https://github.com/djphazer/O_C-Phazerville/actions/runs/10334428023 (I left out the NLM-DIY build, but there's a configuration in platformio.ini just in case) Custom Builds with keyword buchla will also include the BUCHLA_cOC flag now, so that should work. — Reply to this email directly, view it on GitHub <#81 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AG3NMMGTFKZCSWSM6GJHGY3ZQZ6EDAVCNFSM6AAAAABJLLFCRSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDEOBSGI3TONRRGQ> . You are receiving this because you commented.Message ID: ***@***.***>

-- -- kind regards / Viele Grüße Sascha Haber http://northernlightmodular.com/ https://bit.ly/2No5sus - Modular Grid +45 31585333 Copenhagen DK32950523