Euro Midi IO - with 3.5Jacks A-B-Selecter + Thru

[Phatline]

Made a wiki   Euro-Midi-IO

Frontpanel and PCBs are ordered -l now wait for the prototype

can someone check the shematic - i may overlooked something:

Thx.

 

Edited January 21, 2022 by Phatline

[Phatline]

quick update... i debugged Rev.A with a view Wires

 

(and it works - almost),

by doing this i made Rev.B - and updatet the wiki.

For Rev. B i have to Cross J1 to J2, since i made a 1:1 Connection between this 2 Headers... - and that is not true... true would be:

I2>I4, I4>I2, O2>O4... and so on

 

Edited February 11, 2022 by Phatline

[Phatline]

I tryd this Variant for Midi-OUT Activity LEDs... as it works with NoteON-OFF Messages, it comes to its limits when transfairing high datarate - like midiclock. The steady Charge and discharge of C5, messes up the Datasignal, so it cant be used.

Since i already used all Pins of 74HC14, i now need a second HC14, or some other Buffercircuit (for 2x Midi-OUT Activity LED) - any Ideas for that are welcome!