2HP Grids expander with 1x4 Midi through

Thought I would share this here. This is my expander for grids which adds a 1x4 through circuit based on 3.5 TRS type B midi cables (Arturia/Novation)

PCB: https://oshpark.com/projects/5FBJieso


Grids midi input + 1x3 trs midi through

A post shared by Raph Wlodarczyk (@michigan_synth_works) on May 12, 2018 at 4:24am PDT


What does the random jack do? I assume random gates?

yes, its just a breakout for the “bonus bait” header on the back of grids

Wow nice job!

That looks very cool and useful.

I have one (thanks Raph!), and it works a treat. And it has output current-limiting resistors for the additional outputs, so you won’t acccidentally fry the MPU if you short the output.

Hi…I want to make the module a stand alone midi through X4 is this possible…just connect power, and can’t use the random I suppose ?

Yep. it just needs 5V power and ground to work as a mult