Hello!
My app can communicate with my Arduino, but I have no clue how to save a file transferred FROM Arduino TO my cellphone (Arduino = sender, cellphone = receiver).
I searched quite a few tutorials, but so far, I know that I can simply send the whole file using " println() "s, but don't know how to read (the files are quite long) and save it, in just a single file, using App Inventor.
Thanks!