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 
Live streaming at radio.electro-music.com

  host / artist show at your time

poster

Please visit the chat
 Forum index » Instruments and Equipment » Modular Synthesis
How to connect Akai MPKII Mini to eurorack modular
Post new topic   Reply to topic
Page 1 of 1 [5 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
svensei



Joined: Oct 04, 2019
Posts: 5
Location: Sarajevo

PostPosted: Fri Oct 04, 2019 4:43 am    Post subject: How to connect Akai MPKII Mini to eurorack modular Reply with quote  Mark this post and the followings unread

Hello everyone,

Im new to the eurorack synths, but as soon as i got interested... I was connected to the razmasynth guy that built one beginner setup for me.
However i need help and as much as knowledge from someone that understand this matter...

So the main question is how to connect AKAI Mini (that only have sustain & usb connection) to this modular that i have.

Image of modular synth - http://prntscr.com/pesqrk

Image of akai - http://prntscr.com/pesr2k
- http://prntscr.com/pesrzb

Cheers
Back to top
View user's profile Send private message
PHOBoS



Joined: Jan 14, 2010
Posts: 4598
Location: Moon Base
Audio files: 635

PostPosted: Fri Oct 04, 2019 6:28 am    Post subject: Re: How to connect Akai MPKII Mini to eurorack modular Reply with quote  Mark this post and the followings unread

welcome party!

I am not familiar with the AKAI MPKII mini so I am guessing a bit.
You will probably need a midi to CV converter that takes the USB output of the AKAI mini and converts it into signals
you can use with your modular synth. (I am actually working on a simple one at the moment). I assume there are modules
that use USB midi but you can also use a seperate converter to first convert it to a regular DIN connector. There might be
more modules available that makes use of this instead of USB.

The sustain input (it is an input ?) is probably designed to connect to a pedal with a switch. If you want you could control this
with your modular too but I am not sure which modules there are to do something like this. It wouldn't be very hard to make
something yourself though, if you can handle a soldering iron.

_________________
"My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider
Back to top
View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger
svensei



Joined: Oct 04, 2019
Posts: 5
Location: Sarajevo

PostPosted: Fri Oct 04, 2019 9:53 am    Post subject: Re: How to connect Akai MPKII Mini to eurorack modular Reply with quote  Mark this post and the followings unread

PHOBoS wrote:
welcome party!

I am not familiar with the AKAI MPKII mini so I am guessing a bit.
You will probably need a midi to CV converter that takes the USB output of the AKAI mini and converts it into signals
you can use with your modular synth. (I am actually working on a simple one at the moment). I assume there are modules
that use USB midi but you can also use a seperate converter to first convert it to a regular DIN connector. There might be
more modules available that makes use of this instead of USB.

The sustain input (it is an input ?) is probably designed to connect to a pedal with a switch. If you want you could control this
with your modular too but I am not sure which modules there are to do something like this. It wouldn't be very hard to make
something yourself though, if you can handle a soldering iron.



Thank you for the fast answer PHOBoS,
the sustain is designed for pedal... can you tell me where i can find detailed tutorial for total beginner on how to make something from scratch?

Cheers,
s
Back to top
View user's profile Send private message
PHOBoS



Joined: Jan 14, 2010
Posts: 4598
Location: Moon Base
Audio files: 635

PostPosted: Fri Oct 04, 2019 11:52 am    Post subject: Reply with quote  Mark this post and the followings unread

sorry, I don't have a detailed tutorial for you. The simplest way would be to use a standard 5V relay (if you use 5V gate outputs),
however I would not recommend it. The current it needs to switch will be rather high (might even be too high for a gate output)
and would at the very least need an extra diode to protect the gate output. So instead it would be better to use some sort of
electronic switch. Maybe a single transistor can do it but I'd recommend an optocoupler. Actually, I think I made something
similar for a delay unit, hold on,...

yep, I did http://electro-music.com/forum/post-422585.html#422585

You can probably do it with just an optocoupler alone which will eliminate the need for external power (although you could use a battery).
it would be something like this:
Posted Image, might have been reduced in size. Click Image to view fullscreen.
Where 'microcontroller pin' is the input (connected to a gate out) and S1 would be the 2 contacts connected to the sustain input.

Since I don't have an Akai MPKII mini I don't know what will or won't work as I can't test it.

_________________
"My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider
Back to top
View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger
PHOBoS



Joined: Jan 14, 2010
Posts: 4598
Location: Moon Base
Audio files: 635

PostPosted: Fri Oct 04, 2019 12:23 pm    Post subject: Reply with quote  Mark this post and the followings unread

I gave it some more thought and I don't think it would even be useful. The Akai MPKII Mini is just a controller so maybe the sustain pedal
input just gets converted to a midi signal. That would mean you first convert a gate output to a signal for the Akai. The Akai converts it to
a midi signal and then you would use a midi converter to turn it back into a gate output.

ok now I am curious, let me see if I can find something in the manual.


edit: didn't really find anything in the manual but watched a video and it does indeed seem to convert the pedal input to a midi CC message.

_________________
"My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider
Back to top
View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger
Display posts from previous:   
Post new topic   Reply to topic
Page 1 of 1 [5 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » Instruments and Equipment » Modular Synthesis
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