1) American invention 
Braigo (Brai-lle +Le-go) is the name of a Braille printer design, version 1.0 uses Lego, a Mindstorms EV3 kit, which includes a microprocessor with assorted components such as electric motors, sensors and actuators. Braigo v1.0 was designed by 12-year old Shubham Banerjee in January 2014, as an entry in a 7th grade school science fair project. The...