If I wanted to build my own device with similar capabilities, what platform would be better to start with: rPi zero, or a small Arduino, with consideration of the necessary modules and firm/software needed.

I am using my laptop to take notes in class and would like to use my android based e-ink tablet for quick handwriting and diagrams. What is a good way to get the content from the tablet to my vault as quickly and smoothly as possible? First-party sync? Note files pushed through Syncthing?

I would like to use my laptop for note taking in class, and use an android based e-ink tablet for handwriting and diagrams. What are your recommendations for delivering the tablet's notes to the vault? Obsidian on the tablet with first party sync looks like a possibility. What about another app that can use SyncThing or similar that the laptop vault can turn pull?