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-Apparently, a 12-year-old boy in India developed a low-cost embosser using Lego MindStorms EV3: see http://sociotechnocrat.kinja.com/12-year-old-develops-low-cost-braille-printer-with-lego-1515215252.
+Apparently, a 12-year-old boy in India developed a low-cost embosser using Lego MindStorms EV3 (https://en.wikipedia.org/wiki/Lego_Mindstorms_EV3): see http://sociotechnocrat.kinja.com/12-year-old-develops-low-cost-braille-printer-with-lego-1515215252.

 Build instructions are available at http://sociotechnocrat.kinja.com/braigo-braille-printer-with-lego-how-to-build-inst-1546125354.