# Dynamic braille interface

I'm a newbie in robotics, and I'm doing a project on dynamic Braille interface. Basically it's a 8*8 array of pins, which can be either totally up or down. How to use least motor as possible?

I'm thinking of using Arduino for easy interface with computer.

• Welcome to Robotics Dzung Nguyen, perhaps you could explain what you have considered so far, and what you have rejected. What constraints are you under? Do you have limits on how big the device can be? What are your response time requirements? What budget does your project have? As an example, you could do this a set of 64 piezo or pneumatic actuators and set each pin individually, or you could use fewer motors which set multiple pins at the same time, but there are many factors which need to be taken as design considerations. – Mark Booth Apr 17 '13 at 18:13
• Braille itself only has 64 possible values -- 6 dots (⠃) allowing $2^6$ possibilities. Are some of the rows permanently unused, existing only for spacing purposes? In other words, you're one row of pins short of being able to represent 3 rows of braille characters; how does this affect your plan to show characters on this interface? – Ian Apr 17 '13 at 20:36