Hello,
I've built the midi circuit according to the schematic on the pjrc page : https://www.pjrc.com/teensy/td_libs_MIDI.html (the one designed for teensy 3.x) and connected it to a teensy 4.0.
When I test it with the code provided on the same page, the output circuit works fine but the input circuit provides incoherent MIDI messages when connected to another midi device ( for example, the teensy thinks it receive After touch message when it should receive note on message)
More specifically
- when I connect the teensy midi output to the teensy midi input (some kind of loop), the midi input receives the midi messages correctly. The circuit should be correctly built thus.
- it's only when I connect the input to another device (keyboard, sequencer) that the midi messages are incohérents
What do you think this issue comes from? And how can I fix it?
Thanks!
I've built the midi circuit according to the schematic on the pjrc page : https://www.pjrc.com/teensy/td_libs_MIDI.html (the one designed for teensy 3.x) and connected it to a teensy 4.0.
When I test it with the code provided on the same page, the output circuit works fine but the input circuit provides incoherent MIDI messages when connected to another midi device ( for example, the teensy thinks it receive After touch message when it should receive note on message)
More specifically
- when I connect the teensy midi output to the teensy midi input (some kind of loop), the midi input receives the midi messages correctly. The circuit should be correctly built thus.
- it's only when I connect the input to another device (keyboard, sequencer) that the midi messages are incohérents
What do you think this issue comes from? And how can I fix it?
Thanks!