MJU
Midi-Jack USB
USER MANUAL
Congratulations! You are now the owner of MJU - midi jack USB
midi event provessor. please read this manual in its entirety and
keep it in a safe place for future reference! Have fun!
Crumar MJU is a smart midi-usb device capable of "translate"
events such as the jack input into midi messages. MJU has one
TRS jack onboard plus one midi in (near the TRS jack) , one midi
out (near the micro USB connector) and one micro USB
connector. The USB interface of MJU is "class compliant" and
can be use like midi in-out or, in case of serial midi connection,
can be used for power on the device with a simple phone
charger.
MJU has a 3-digit display and 2 buttons used for navigate and
confirm voice of menu (upper for page selection, lower for value
selection).
What you can do with MJU:
The classic example is the "conversion" of a analog jack
expression pedal into midi messages. You would like to have your
expression pedal sending midi datas out: just connect you pedal
into the jack input of MJU, select and configure MJU and you will
be able to send out midi messages from your expression pedal.
Another example can be the multiple compatibility of one device
(like halfmoon). Let's say you have halfmoon for Mojo Organ but
you would like it to be compatible with another instrument... just
connect the halfmoon to MJU, set it and you will have out from it
the midi message/messages required.
Last but not least: you can convert your "lower manual for
Mojo61" to a fully working keyboard: MJU will give power to
lower manual and will translate midi messages (require
reprogram with Arduino IDE)
CRUMAR MJU - SPECIFICATIONS:
• USB-MIDI-JACK event processor.
• 3-digit display.
• 2 Program button.
• One TRS 6.3 jack input.
• MAB5 - midi in.
• MAB5 - midi out.
• Micro-usb connector .
• USB-MIDI capable.
• Class compliant and bus powered - max 500mA.
• Can be powered with a phone charger.
• Based on Arduino platform - programmable.
• Solid Metal constructions.
DEFAULT FIRMWARE INSTALLED FUNCTIONS:
• Upper button is page navigation.
• Lower button is value select.
• Menu pages:
trS: EP1 (wiper on tip), EP2 (wiper on ring), HMC
(halfmoon Crumar), HMH (halfmoon generic), SPP
(sustain pedal positive), SPn (sustain pedal negative).
tyP: CC (control change), PC (program change), not
(note on).
CHn: select midi channel from 1 to 16.
nUM: select number of midi message.
mOn: monitor for device connected to Jack
NOTES ON ARDUINO:
What is Arduino?
Arduino is an open-source electronics platform based on easy-to-use hardware
and software. Arduino boards are completely open-source, empowering users to
build them independently and eventually adapt them to their particular needs. The
software, too, is open-source, and it is growing through the contributions of users
worldwide.
What does this mean?
This means that the heart of MJU is based on a open-source platform and the
project is open to everyone.
As a finished product, MJU works with the specifications written in this manual:
feel free to explore the world of Arduino but keep in mind that we don't offer
support on coding or hardware modifications of MJU. You can always ask the
Arduino community that is everyday growing and always very helpful!
You can find project files and source codes here:
https://github.com/ZioGuido/GMLAB_MJU
Informations on Arduino here:
https://www.arduino.cc/
For more informations please visit www.crumar.it
All trademarks used herein are the property of their respective
owners.
Crumar is a trademark owned by:
V.M. Connection
Via Lucio Vero, 2 - 31056 Roncade (TV) - Italy
www.Crumar.it
Last update: May 2020.
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