29 Apr '16, 5am

Refreshable Braille Display and Braille Keyboard

Refreshable Braille Display and Braille Keyboard

[Vijay] has been working since 3 years on a Refreshable Braille Display but has only recently been able to make some substantial progress after teaming up with [Paul D’souza]. During his initial experiments, he used dot matrix printer heads, but the current version uses tiny vibration motors as used in mobile phones. He’s converting rotary motion of the tiny motors in to linear movement for pushing the Braille “cell” pins up and down. The eccentric weight on the vibration motor is replaced with a shaped cam. Continuous rotation of the cam is limited by a stopper, which is part of the 3D printed housing that holds the motors. Another 3D printed part has three cam followers, levers, springs and Braille pins rolled in one piece, to create half a Braille cell. Depending on the cam position, the pins are either pushed up or down. One Braille cell module consists of two cam foll...

Full article: http://hackaday.com/2016/04/28/refreshable-braille-displa...

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How to Bend a Vintage Casio Keyboard

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spectrum.ieee.org 29 Apr '16, 7pm

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AMOLED growth a bright spot for display industry - Electronic Products & Technology

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ept.ca 30 Apr '16, 11am

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