I have constructed a USB/MIDI controller for Organteq ...

I will be of course happy to help anybody who tries to build something similar. Here is a photo with the "brain" of the controller, an Arduino Pro Micro PCB (with the two PIN PCB connectors already soldered):

https://www.icloud.com/sharedalbum/fr-f...00F657BF2A

It costs about 8€ on Amazon.

Andrei

This is how it looks:

https://www.icloud.com/sharedalbum/fr-f...4CBC940198

My device has:

(A) 14 buttons for easy/quick access to the stop combinations, namely

on the lower row:  10 buttons, a button for each stop combination.
on the upper row: buttons for previous/next stop combination and previous/next bank.

The buttons are positioned in the same way as the corresponding touch screen buttons in Organteq’s Jamb View

(B) A knob for easy access to volume control.

It works as follow: when one of the 14 buttons is pressed, a note on/note off MIDI message is sent and the nearby LED flashes for 200ms to confirm the MIDI action. No need to have the LED lit longer, because the organist can see the current (active) stop combination on the screen. Moreover, my MIDI controller is USB powered, so it is not reasonable to strain the USB port for a LED light  which nobody needs.

I attach a video showing how it works:

https://www.icloud.com/sharedalbum/fr-f...B7FBBF654E

The front panel  has been made of PLA using a 3D printer.  For the electronics I used an Arduino Pro Micro PCB and WS2812B individually addressable LEDs.  The wiring has been designed by …  Claude (free version), who also wrote the firmware code and explained me how to upload it. The price of the materials is very low, but there is a lot of work, especially precision soldering.

Why did I build this?
Why was I not happy with MIDI controllers available on the market?

First of all, the positioning of the buttons on the front panel of the available MIDI controllers is not at all suited  for  the Organteq interface. Usually such MIDI controllers have a 4x4 or 5x3 button matrix.

I saw that a very popular choice is Elgato’s Stream Deck MK2.

I did not try this device, but studying the specifications, I think that it is not optimal for Organteq use.
The main reason: Elgato’s Stream Deck is not a MIDI controller. It can be converted into a MIDI controller by installing a MIDI plugin. But the device requires the application Stream Deck running in the background, taking processor power,  RAM and straining  the USB port.

A simple MIDI controller (as mine) does not take any meaningful computer power and is natively compatible with any computer platform without any driver or application running in the background.