Braille Clock/Watch

For the watch/clock, we decided to use cylinders on which there will be dots. They will turn thanks to servomotors as you can see HERE .

1st idea was to create a QR code app (called Qr Pic) to convert and crop a picture to a PDF file.

But we changed our mind. It was too complicated to code it. Moreover it is impossible to upload a file in an existing QR code. Usually it works the other way around : a QR code is created by a generator after a link has been chosen.