Thanks for the information. It's weird because our batteries are in accordance with international air transportation standards.
Anyway, some users from the United States managed to buy it from Woodbrass or MusicStore.
It's something we're regularly thinking about, but that isn't really simple to implement, notably because the MIDI protocol makes it hard to work with, and because there are few synths out there that understand the relevant MIDI messages. Anyway, MIDI isn't designed from the ground up to allow you to play outside the 12-tone equal temperament (12-TET), so a popular approach is to let your synth or virtual instrument handle this.
You might want to look at synths or virtual instruments that are explicitly designed for this (look for terms like microtuning), like the Samplemodeling virtual instruments.
In general, they allow you to define the exact frequency (or offset from a base frequency) of each of the 12 tones (C, C#, D, D#, E, F… B) that can be sent by your MIDI controller.
Are you on the latest firmware version? If not, try to update your Sylphyo first. We fixed some bugs with touch sensing since the earlier versions.
What fingering do you use? What could happen is that sometimes your left index finger, or your left thumb, or any other upper finger slowly drifts from its original position, and the touch sensor considers that the finger isn't touching the key anymore. The resulting fingering is sometimes not "understood" (because without the left index key it doesn't correspond to an actual recorder fingering anymore, for instance), and in this case the Sylphyo just stays on the current note.
If you see this happening and you want to correct it, just release all keys for a second and place your fingers back in the desired position. To avoid this situation in the first place, you might want to make sure the fingers that touch the keys are placed in the center of the keys, and that you touch new keys by hitting them a bit more frankly (as the touch sensor might have trouble when trying to recognize a slowly approaching finger).
Thanks again. I think the battery indicator may just not be very accurate. I thought I saw a release note about percentage of battery (release notes for v1.1.0, "Fixed the battery percentage icon."), but mine only aways show full battery. Is there a setting to get it to show percentage?
Actually I did not find the time to update my Sylphyo, but I'm so looking forward to do it soon, when I got vacation. I read in the release notes, that you installed a possibility to change the left Pinky function to "flat" instead of "Sharp". Thanks so much!! I'm so excited to try it out!
greetings, mosquito :-)