Connect SEQ V4 to MBCV V2 with USB?

MIDIbox SEQ
1

Can I connect my MBCV V2 (STM32F4) to my SEQ V4 (STM32F4) with MIDI over USB?

 

Up until now I have used the CV V2 with a PC over USB and powered with a USB hub.

But if I power it with a power supply, can the SEQ send MIDI through USB to it.

2

Yes it works! :slight_smile:

 

Best Regards, Thorsten.

3

Great :slight_smile:

 

How does the cables need to be set up?

Can I use a USB Micro-B male to USB 2.0 A female OTG cable/adapter on each STM32F4

http://www.reichelt.de/DELOCK-83183/3/index.html?&ACTION=3&LA=446&ARTICLE=126860&artnr=DELOCK+83183&SEARCH=DELOCK+83183

 

and connect them with a USB 2.0 A male to USB 2.0 A male cable

http://www.reichelt.de/USB-Cables/AK-670-2-1-0/3/index.html?&ACTION=3&LA=2&ARTICLE=45870&GROUPID=6099&artnr=AK+670%2F2-1%2C0

 

or can I only use the OTG cable/adapter on one Core, and a “standard” USB Micro-B male to USB 2.0 A male cable on the other.

http://www.reichelt.de/USB-Cables/AK-676-AA2/3/index.html?&ACTION=3&LA=2&ARTICLE=132999&GROUPID=6099&artnr=AK+676-AA2

 

If so, does it matter which Core has the OTG cable/adapter?

 

What about power?

Can the MBCV V2 be powered over USB from the SEQ V4, if the SEQ is powered by external 5V power supply, and J17 is bridged?

I am not sure how much the SEQ V4 (Wilba panel, Smash TV green LEDs) + 2x Optrex LCD (max 480 mW each) and the MBCV V2 (AOUT module, DINx3, 4xScope OLEDs) draws.

My 5V supply can take 2,5 A. Enough?

 

Cheers, Halvor

4

Use the adapter only for the device which should play the host role: http://www.reichelt.de/DELOCK-83183/3/index.html?&ACTION=3&LA=446&ARTICLE=126860&artnr=DELOCK+83183&SEARCH=DELOCK+83183

 

Connect the other core with this cable: http://www.reichelt.de/AK-676-AB2/3/index.html?&ACTION=3&LA=446&ARTICLE=133000&artnr=AK+676-AB2&SEARCH=AK+676-AB2

 

 

Can the MBCV V2 be powered over USB from the SEQ V4, if the SEQ is powered by external 5V power supply, and J17 is bridged?

 

yes

 

 

My 5V supply can take 2,5 A. Enough?

 

yes

 

Best Regards, Thorsten.

5

I know you’re on holiday TK, but maybe for when you come back :slight_smile:

or someone else 

 

I have my CV V2 connected to the SEQ V4 like you suggested.

When I run the SEQ (press play) the CV V2 displays “MIDI protocol TIMEOUT”

 

Any suggestions?

6

I don’t understand this message “MIDI protocol TIMEOUT” on the MBCV

7

I also get the “MIDI Protocol TIMEOUT” message during boot when I have an Arturia Beatstep connected to my MBSEQ via USB OTG, though everything works correctly. I guess the message relates to the USB/MIDI host functionality.