Your MIDI keyboard should now be successfully interfaced with your computer, potentially via your audio interface. This ...

MIDI was created over thirty years ago to connect electronic instruments ... [mitxela]’s polyphonic synth for the ATtiny 2313 does just that, using only two kilobytes of Flash and fitting ...

Try swapping the two Midi Din connections if you do not hear any audio when you first use the synth. Details of the sketch that should be uploaded to the ATmega328 is given in MidA.ino. There are ...

The only difference is the use of a second MIDI In port. The octoTron Synthesizer use this second MIDI In port to connect a MIDI controller. The assigned MIDI controller numbers and the schematic are ...

The only downside: you need a synthesizer to turn MIDI notes into actual sounds ... and a USB hub to connect a likewise added USB audio interface, as well as the controller itself.

So, let’s answer this question comprehensively: how do you connect a MIDI keyboard ... got an old-school 5-pin MIDI keyboard you’d like to mate with your digital synth VSTs, then your needs ...