midiphy Expander Modules: CV for your SEQ v4(+)

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midiphy Expander Modules: CV for your SEQ v4(+)

Post by latigid on » Sun Aug 11, 2019 5:09 pm

[video][/video]


http://www.midiphy.com/en/news/d/18/eur ... -mbseq-v4-

Image

All the parts are available to order. The basic setup is one A1 and one D1 module for 8x CV/gate, but extra D2/3 modules chain to give sets of 8 clocks and triggers. The Euroceiver puts the line driver in the rack and is the single connection from the SEQ.

Simple ordering as usual: a kit or set of parts plus one BOM from Mouser.
Last edited by latigid on on Sat Sep 14, 2019 2:51 pm, edited 1 time in total.

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Altitude909
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Post by Altitude909 » Sun Aug 11, 2019 9:09 pm

nice. I'm all over this

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Post by latigid on » Tue Aug 13, 2019 12:02 am

Thanks for the order :)

Here are some shots of the mounted modules:

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revtor
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Post by revtor » Tue Aug 13, 2019 6:33 am

Red is positive v, green is negative v?

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Post by latigid on » Tue Aug 13, 2019 10:02 am

revtor wrote:Red is positive v, green is negative v?
Depends on what way around the LEDs go in :)

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Post by weasel79 » Tue Aug 13, 2019 10:47 am

looking great, congrats! that giant db25 serial conenctor is bringing up semi-traumatic childhood memories hahah

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Post by Schlumpfhut » Tue Aug 13, 2019 1:19 pm

Any chance of getting this lovely thing into the world of 5U? Otherwise i would have to adapt it with a power adapter and MANY flying wires.... :hmm:

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Post by latigid on » Wed Aug 14, 2019 12:28 am

Schlumpfhut wrote:Any chance of getting this lovely thing into the world of 5U? Otherwise i would have to adapt it with a power adapter and MANY flying wires.... :hmm:
As the boards are very "modular" it wouldn't take too much effort to make an adaptor PCB for other formats. I would need to see a bit more interest though.

It wouldn't actually be too hard to adapt the current concept: just panel-mount a set of 6.35mm jacks and wire from the 8-pin header. You would be missing the LED indicators, but it's a simple zwischenlösung.

Can you suggest some commonly used sockets and the preferred mounting style? I would guess the PCBs are typically perpendicular to the panel for better strength. Are mounting brackets required?

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Post by Schlumpfhut » Wed Aug 14, 2019 9:44 am

latigid on wrote: Can you suggest some commonly used sockets and the preferred mounting style? I would guess the PCBs are typically perpendicular to the panel for better strength. Are mounting brackets required?
I would use Switchcraft 112A sockets - preferably with solder lugs - and a mounting bracket. The 8pin header make wireing comfortable. I also would make a wider panel which can break out all possible functions. CV, Gate, Trigger and Clock

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Post by latigid on » Sat Sep 14, 2019 3:00 pm

I edited the first post to link an extensive tutorial prepared by Peter. Enjoy all of its 4k glory!

A big announcement today is that the latest SEQ version V4.096 supports a maximum of 32 CV channels. Previously the maximum was 8. It's possible to have a) one monophonic CV per track, or b) CV + velocity. Consider using this mode for more expressive CV, such as a stepped VCA offset. The associated gate in this mode is not wasted and sends an "accent" trigger if the velocity value is greater than 100.

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Post by Altitude909 » Sun Sep 15, 2019 7:31 am

..
Last edited by Altitude909 on Sun Sep 15, 2019 9:56 am, edited 1 time in total.

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revtor
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Post by revtor » Sun Sep 15, 2019 8:40 am

Make the Jack pcb schematic public!! (The Midibox way, isn’t it?)

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Post by jimfowler » Sun Sep 15, 2019 9:13 pm

Gonna guess this is eurorack standard for cv and gate...could it be modified for, say, buchla format?

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Post by latigid on » Mon Sep 16, 2019 12:02 am

jimfowler wrote:Gonna guess this is eurorack standard for cv and gate...could it be modified for, say, buchla format?
You could easily get a different CV scaling, gate would be trickier. Using this post as a reference, maybe mixing a pulse (velocity > 100) plus a gate would give the needed spike?

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