A 12-year-old boy invented a low cost braille printer from LEGO Mindstorms EV3. Best yet, instead of profiting from his invention he is making the instructions available online for free.
http://www.brickingbad.com/news/braille ... from-lego/" onclick="window.open(this.href);return false;
Braille Printer from LEGO Mindstorms EV3
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brickinfinite
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Re: Braille Printer from LEGO Mindstorms EV3
That's awesome 
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