Diy BrainPort BranFart

Opps, posted to wrong forum, can mod fairies help me fix please?

So after having done nothing for a bit now, I suddenly got an urge to play with something Ive always been interested in.

There is a little device that has helped blind see via their tongue, a 12*12 matrix which has a video stream sent to it.

All and all, they can see basic images by remapping their brain to see via a tongue - camera interface.

So I thought Id see if I can do something diy, proof of concept tonight, can just output a TENS unit into a PWM transistor. The output is about 100v, and gives a good tingle.

Plan is to build a 1010 or 1212 matrix to sit on my arm.