Smart Multibox with PBC/6X

[enyawg]

Hi Mario, Ron and the Team,

Using the PBC/6X I soldered/ assembled a bidirectional Y cable per you pin spec and it works fine.

I received the Smart Multibox today as I want to place this (more secure) solution under my board by simply replicating my bidirectional cable setup, using the Smart Multibox and 5-pin MIDI cables.

So just to confirm my cabling is:
1. Connect a 5-pin MIDI cable from the MIDI OUT jack on the PBC/6X to Input 1 on the Smart Multibox.
2. Connect a separate MIDI cable from Output 1 of the Smart Multibox to my MIDI IN of my external effect devices.
3. Connect a separate MIDI cable from the MIDI OUT of my external device (Morningstar MC-4) to Input 2 on the Smart Multibox.
4. Set the Smart Multibox to Merge / Thru Mode (indicated by a solid green Status LED).

Output is fine but Input just won't work.

So I changed step 4. to: Set the Smart Multibox to Script mode (indicated by a solid Orange/ Yellow Status LED).
Here's my script, but still doesn't help.

#
# BIDIRECTIONAL PBC/6X
# by Wayne Gardner 30/06/2026.
#
# A script that forces the Smart Multibox to route standard MIDI incoming data from
# your Morningstar MC4 Pro back to the special bidirectional return path of the RJM
# Mastermind PBC/6X.
#
from multibox import *

def midi_received(port, msg):
# 1. Forward outbound commands from PBC/6X (Input 1) to Outputs 1 and 2
if port == MIDI_IN_1:
midi_send(MIDI_OUT_1, msg)
#midi_send(MIDI_OUT_2, msg)

# 2. Forward return data from MC4 Pro (Input 2) directly into PBC/6X via Output 1
elif port == MIDI_IN_2:
midi_send(MIDI_OUT_1, msg)

# Visual confirmation that a message passed through the processor
blink_led()

# CRITICAL: Tell the Multibox firmware to actively listen to this function
midi_set_receive_cb(midi_received)

Can I access your script library or can you assist with making this work?

Cheers,
Wayne Gardner
Australia

 

[rjmmusic]

I just realized that our recent website move broke our script library. I'll fix that as soon as I can, thanks for pointing that out.

I think the issue in the script is the forward from MIDI_IN_2. The script is forwarding it to Output 1, but the comments say that you want it to forward to the PBC/6X, which is connected to Input 1. If you want to have the messages sent bidirectionally back to the PBC6X, use midi_send(MIDI_OUT_5, msg) instead

 

[enyawg]

Thanks Ron,

Yes I got it working just after I sent you the thread. As I want to send messages bidirectionally back to the PBC6X, I used midi_send(MIDI_OUT_5, msg).

In summary:
1. I used a Morningstar MC-4s physical DIN5 MIDI cable output (I was using the Omniport with the Bidirectional cable set to MIDI OUT Type B TRS).
2. I set the MC-4 under General Configuration/ MIDI Thru Settings/ 3.5MM (Front) MIDI In - Thru To "DIN5".
3. Used my Bidirectional PBC/6X script as originally posted (with the midi_send(MIDI_OUT_5, msg mod).

Looking forward to accessing the script library when it's up again.

Cheers,
Wayne

 

[rjmmusic]

If you download the latest version of the Smart Multibox editor, it will be able to access the script library.

 

[enyawg]

I can't run the new SmartMultiboxEditor-1.1.2.dmg you uploaded. I'm not 100% sure but it appears this may be a silicon only version (see error message).
SmartMultiboxEditor-1.1.1.dmg ran on my Intel Mac. Can you upload 1.2.2 for mac Intel & please include the script library access.

Thanks,
Wayne

 

[rjmmusic]

What version of MacOS are you running?

 

[enyawg]

Laptop:
Mac BookPro 15” 2022 Model

MacOS:
Sequoia 15.3.2

Processor:
2.4 GHz 8-Core Intel Core i9

Memory:
64 GB 2667 MHz DDR4

 

[enyawg]

Sorry but I still can't install the latest SmartMultiboxEditor-1.1.2.dmg on my Intel Mac.