MIDI retrofit of 8x6 matrix keyboard

MIDIfication
1

Hi,

 

I’m just checking how to go about this. The synthesizer I’m working on has an 8x7 active-high keyboard matrix. Actually, it’s mostly a 8x6 matrix, however the top key (C) has its own data line. Lines KD1 to KD8 are select lines and lines B1 to B7 are data lines.

As you can see in the image below.

SX400Keys.jpg.97182d68841f838b71c0cf8a12864ec9.jpg
SX400Keys.jpg.97182d68841f838b71c0cf8a12864ec9.jpg900×693 121 KB

 

I have a Core V3 and a bunch of DOUTX4 and DINX4 modules (I expect to only need one of each). Is any other hardware needed to complete this? To be clear, I want to add MIDI input to the synth to control it from a DAW. Can the core run off 5V and output 5V to the data lines?

 

Thanks

2

Hi,

I’m willing to do something like that, did you come to a solution somehow ?

Re

3

Hi,

Quick update to report that the UMR2 has been open-sourced.

Here is the git which could make it easier for many of us :

https://github.com/staskevich/UMR2

Bye