Io - A new MIDI retrofit for Jupiter 4

The Roland Jupiter-4 and ProMars Compuphonic Analogue Synthesizer
covariance
Posts: 47
Joined: Fri Oct 16, 2009 8:53 pm

Io - A new MIDI retrofit for Jupiter 4

Postby covariance » Sat Oct 17, 2009 11:18 am

Hi all,

I am developing a kit for Jupiter 4 that solves all MIDI and controlling issues. Just like Europa it is named after a moon of Jupiter - so call it Io.
The kit includes two separate boards that can both work independently or can cooperate with each other and also with other MIDI gears.
One of the boards - the Programmer Extension - replaces the original microprocessor of the JP4 with a lots of enhancements.
I completely coded the JP4 programmer from scratch and added all the useful functions that JP4 lacks. This board can be easily mounted at the place of the processor socket and no other modification just the mounting of the MIDI connectors is needed.

Feature list:
- Faithful emulation of the original Roland Jupiter 4 programmer chip
- Memory is expanded to 64 patches and internally stored in non-volatile memory
- MIDI In and Out connections
- All 16 sliders and 9 switches are sending and receiving MIDI control messages
- MIDI channel change from control panel (press MANUAL + PRESET switches)
- Modifying stored patches is now possible
- Sending and receiving MIDI Program Change messages
- Patch dump
- Firmware upgradable thru MIDI
- Patch copy
- Extra LFOs on pitch and cutoff

Planned features:
- Patch morph
- Randomize parameters
- Elektron TurboMidi compatibility (10 times faster MIDI communication)

The second board is a usual MIDI interface that has the following features:
- Polifonic MIDI Note messages
- Pitch bend control
- VCF control
- Volume control
- Portamento control
- Arpeggio rate control
All these controls are parallel with the JP4 performance controls.

Email me if you are interested.
Best regards,
Laszlo Kovari aka Covariance
midipolis.blogspot.com
Last edited by covariance on Sat Jul 03, 2010 9:44 am, edited 2 times in total.

User avatar
Bross
Posts: 57
Joined: Wed Feb 28, 2007 6:18 am
Location: Nashville, TN
Contact:

Postby Bross » Sun Oct 18, 2009 4:47 pm

Wow, great news for Jupiter-4 owners. Nice word play with name too.

filter69
Posts: 7
Joined: Fri Oct 31, 2008 1:30 am

wow

Postby filter69 » Sun Oct 18, 2009 8:06 pm

Very exciting news!

Would love this!

Mr Arkadin
Posts: 27
Joined: Sun Jul 26, 2009 9:10 pm

Re: Io - A new MIDI retrofit for Jupiter 4

Postby Mr Arkadin » Sun Oct 18, 2009 8:16 pm

covariance wrote:- Modifying stored patches is now possible


Just that alone would be amazing. Had no idea the JP-4 could be improved like this. i just installed the cheap Czech MIDI kit which gives me basic functions, but this sounds amazing, although i am thinking it would be expensive.

Rob
Posts: 1
Joined: Fri Jan 25, 2008 10:01 pm
Location: Sydney, Australia

Postby Rob » Mon Oct 19, 2009 11:19 am

So sick Laszlo!!

Regarding the MIDI interface:
Will it do velocity -> vca / vcf, and if so, will it respond to velocity on a per voice basis or as a global effect like Synthcom's Europa?

covariance
Posts: 47
Joined: Fri Oct 16, 2009 8:53 pm

Postby covariance » Mon Oct 19, 2009 2:44 pm

Rob wrote:

Will it do velocity -> vca / vcf, and if so, will it respond to velocity on a per voice basis or as a global effect like Synthcom's Europa?


Only global control, nothing else possible due to Jupiter's hardware construction.

vince34
Posts: 27
Joined: Tue May 15, 2007 1:49 pm
Location: France

Postby vince34 » Wed Oct 21, 2009 6:42 pm

This is indeed great news. I always was a bit *jealous* about Jp6's owners which had Europa, and how great kit it is! I was wondering why a similar kit wasn't available for the Jp4, which was sad. But now you're in da house.
That's awesome!!!

Vincent

(p.m. sent :-)

skinnybloke
Posts: 1
Joined: Wed Jun 17, 2009 11:52 am

Postby skinnybloke » Thu Oct 22, 2009 12:02 pm

That kit sounds great, the voice morphing sounds very interesting.....had my jupiter for a while now, it came to me with lots of problems, managed to get it all going for 2 days and now its failed again, all me osc have stopped :( hopfully it will be up and running again soon, annoying as ive had a tase of its sound :)
Still cant beleave Vince Clark used to lug that thing around on trains !

Duramax
Posts: 2
Joined: Fri Apr 11, 2008 3:04 am

JP 4 MIDI upgrade

Postby Duramax » Wed Nov 18, 2009 2:22 am

This sounds great! How do I get it??

administrator
Site Admin
Posts: 12
Joined: Wed Nov 15, 2006 9:49 pm

Postby administrator » Sat Nov 21, 2009 6:21 am

Any update on this project?

covariance
Posts: 47
Joined: Fri Oct 16, 2009 8:53 pm

Io update news

Postby covariance » Tue Dec 22, 2009 10:10 pm

Thanks for every feedback, feature request and so much interest!
During past two months the following features had been implemented:
- firmware upgrade via MIDI
- two MIDI-synced LFOs to modulate pitch and filter
- pitch and filter modulation is increased to 10-bit
- copy patch function
- a so-called second page mode to control added LFOs
- arpeggio synced to MIDI

I also redesigned the PCB for better and easier installing.
As you can see the list, most of the work are done!
Now I'm working on the user and installation manual and doing the necessary fine tune and test circles.
First series in production will be in January.

I wish you all merry Xmas!
Laszlo Kovari aka Covariance

filter69
Posts: 7
Joined: Fri Oct 31, 2008 1:30 am

Postby filter69 » Wed Dec 23, 2009 6:23 pm

:shock:

Brilliant stuff!

Merry Christmas everyone!
And what a happy new year this will be!

polartech
Posts: 21
Joined: Mon Oct 19, 2009 6:33 am
Location: Hull, East Yorkshire, UK

Postby polartech » Sat Jan 16, 2010 8:42 am

I`m really interested in Io!

Please let us know how things progress, and of course the way we can get hold of the mod kit once it`s released.

Good luck!!

covariance
Posts: 47
Joined: Fri Oct 16, 2009 8:53 pm

Postby covariance » Sat Jan 16, 2010 4:59 pm

Have a look at the preliminary user manual!
Count not weeks but days for the release to come!
Attachments
Io-user (edited).zip
Preliminary user manual
(4.04 KiB) Downloaded 978 times

administrator
Site Admin
Posts: 12
Joined: Wed Nov 15, 2006 9:49 pm

Postby administrator » Sat Jan 16, 2010 6:16 pm

Great to hear and looking forward to the product. You were just on matrixsynth yesterday, so lets hope others will hear about it.

http://matrixsynth.blogspot.com/2010/01/not-namm-new-roland-jupiter-4-interface.html


Return to “Jupiter-4 [and The ProMars]”

Who is online

Users browsing this forum: No registered users and 2 guests

cron