Hello folks, sorry to appear with this (kinda) discarded midi interface. I got it working and find it really interesting. I can make really nice arpeggio stuff with the built in function on my roland rs-5 and other midi magic but only from the musical keyboard.

Pushpin with the computer refuse to comunicate. I have look the possible issues, triple checked everything, also tried the midi out with the keyboard with software from the pc sending midi data, working correctly. All is working BUT the computer sending messages to the pushpin device is a no no.

I've maded the interface with this schem:

have anyone some advices on this stuff? maybe adding some other components in the mix. I got this on my breadboard, ready for changes.

it seems that the pushpin "hear" when i attempt to send midi data; a little clicks on the background affecting the audio signal when i'm tweaking some values.

maybe can someone suggest another working schem?

thank you in advance for your time!