Steve talks about some of the frustrations working with braille displays in this live journal entry Bring On The Braille. I think he speaks for all of us. He writes,
I've been on a constant lookout for affordable braille display technology. For years, this stuff's been anything but. Spending over $2000 for a measley 12 cells is something I would never justify, and the price-to-cell ratio doesn't get much better with the more costly units. Prices have actually come down over the years, and it looks like it may be happening again.
The price is a big barrier. Why can't we have a device that is affordable to all. Braille displays isn't rocket science it is simple enough to build one with a arduino toolkit, I think Edward Rogers(does anyone have his email address?) has built one such device. What do you reckon ?