Braille QR keyring

This is only an illustrative model showing how to make a keyring accessible to the blind. The keyring has a black print inscription, Braille and a QR code.
To be honest, this code is not the most beautiful, but as we are currently working on a dedicated program for creating various braille elements in C#, organizational work here misses the point.
QR code generated with:

https://github.com/ridercz/OpenSCAD-QR

Print settings

A multicolour printer (or manual M600 change)) needed. 0.4 mm nozzle and PLA do pretty well.