Now that the Pin system is working, I will continue by designing and assembling an entire character.

Size optimization has still big space for improvements, and tests with just one or two small magnets instead of three will be made.

The biggest goal I have reached at the moment is that each pin is simple, is made up of just 2 printed parts (that can be made with injection molding for mass production), 2x M2 nuts, some enameled wire, and commercially available magnets. Total cost (for the prototype, not for a scaled production) for each Pin was less than 0.6€ for the magnets, 0.5€ for nuts, copper wire and UV resin for DLP for the 3d printed parts. I think it is one of the lowest price ever reached for a working Braille system.

The electronics will be integrated in the "Line PCB", and at the moment, the system is designed to be Maker friendly, breadboard compatible.