Till Harbaum

I wouldn't say it's better. But it fills a gap. Feel free to link to it. You don't happen to have more infos? E.g. what a read on the characteristic...

Ok. Maybe it's actually better not to have a too close look at the original device when building something sort of compatible.

It exists after installation but is deleted once it has been run to prevent it from running again. Thus i don't need any extra magic to run my script. Once...

Hmm. Maybe that changed one day. If it was the link that was missing then my approach wouldn't work at all. Bit it did ... so i guess i should...

Is this documented somewhere? And does this change have any negative consequences?

Which version did you use? The "offline" version or the online version available at https://harbaum.github.io/ftduino/webusb/scratch3/ ? The current online version works for me. If it still fails for you please...

Still not reproducible here on Ubuntu 18.04 and Chromium 77.0.3865.90 I open the url in chromium with the ftduino already connected, select the ftDuino extension, drag the hat into the...

Ah ... i see. I can trigger that problem by clicking the hat. Otherwise it just works as expected. But when clicking it something goes wrong.

Please try again ... The fact that HATs in scratch don't support promises really doesn't make asynchronous USB io easier to deal with ....

For reference. This is related to https://github.com/LLK/scratch-vm/issues/2129 and the fact that HATs don't support async processing which requires a lot of nasty hacks.