It was the first information I wanted to know, but it wasn't in the article.

Buy a standard midi to usb adapter (~$20), then do:

piano -> (usb) -> Jamcorder -> (midi out) -> adapter -> (usb) -> pc

It should give acceptable latency for real-time recording.

In order to get accurate timestamps, processing midi IN takes priority over OUT.

So OUT can vary in latency between 5ms and 60ms. An unfortunate amount.

Improvements can be made here. I'd recommend a splitter if you need low latency.

seems hard to fake that. and you could randomly quiz them on it .

btw check out http://reddit.com/r/jamcorder for ongoing discussions.

Up until now I've only known of some DAWs & custom raspberry-pi like solutions.

Though the Fantom X6, you have to push 'record' afterwards. Still cool, though!

Thanks for sharing!

thanks for your thoughts, I'll add midi out playback :)

and yes, head deep in midi knowledge by now but that is a good point about hanging notes.

All midi messages are captured, on all 16 channels.

modern ESP-IDF: https://github.com/espressif/esp-idf/pull/12566

versus 3 years ago: https://github.com/chipweinberger/xesp-usbh

> I am not sure if it will work in 10 years.

This was a big concern of mine too. That's why as much of Jamcorder as possible is open standards.

There is also a local web interface, http://jamcorder.local, that is fully extensible by the user. And the BLE and Wifi APIs are not locked down. You can implement your own app.

The biggest limiting factor IMO, are Wifi and BLE still going to be in common use in 30 years? That's hard to predict. But the SD card will still be there. Its a tough problem.

I think that's about as good as you can do, short of putting a screen on it.

----

There's even a feature identical UART interface for the device. Surely that will still work in 30 years.

But definitely not humanly noticeable.

And if you choose, you can make it slightly harder to invoke by requiring an additional 'function' note to be held down.

I haven't felt need for a bookmark button in the app yet, but it did cross my mind.

In theory it should be fixable now.