[MBSEQ MIDIOUT Fix]

I think, that the opto LED opening voltage is missing form the equation....It's 1.3-1.5 V typ.

In case of 6N138 at the receiver side, the 3.3V supply cannot cause any problem.

But it's problematic if you use 6N136 as suggested somewhere. I've some bad experience.....

[IMG 5153]

Thanks for your comments. Yes these are 10mm diffuse LEDs.There is a closer look here:

[Acryllic case CNC]

Hey, that's really cool. Could You plan to provide the CAD files of this to the public?