Continuous playback

[grahamwebb2000]

I sent a musical scale from an Arduino Nano serial port -> Hairless -> LoopMidi -> Grand Orgue and it worked ok. But it didn't stop. Even after unplugging the Arduino, disabling and enabling the port ('usb-serial ch340'), restarting the PC and shutting everything down. Every time I loaded Hairless Midi and started it, the port appeared and the scales kept playing. I had to uninstall the port. What is going on? It's the first time I've used this, so I might be missing something.
Thanks