input from nerve stimulus

Forum 2005-2010 (read only) Hardware Interfacing
1

First post so forgive me if this is not the correct forum.

Background-20+ years ago I designed a simple input device to convert nerve impulse to ACSII so that handicapped people could communicate. I understand that this was an over simplification but I was self taught and little to go on. Much to my shame I left it on the shelf.

I am looking for a schematic or a source for the sensors used in prosthesis but rather than have them used as input to control a motor, I want to use the signals in combinations to enable the individual to "type". With 5 inputs, 120 outputs can be generated. Yes, there will be timing issues but that is where I hope the Arduino will come in. Input A gives output 1, input B gives output 2, input A and B gives output 3, etc.

Yes, this is way over my head but if I do not start it now I never will. Yes I understand that there are several similar input devices but I have yet to find one specifically for the handicapped. Not interested in any commercial venture, I want this to be open so those without $ can actually communicate with their children.

Thank you for your time,

Paul Hirst

2

Well, what a difference a new search makes!

Came across an open prosthesis project that is looking to use open source to reduce the costs and to come up with new ideas. They use myoelectric signals and will hopefully be able to steer me in the right direction to buy/make a myoelectric input board.

I guess my first step would be to get an Arduino, learn how to hook up five buttons (to mimic the myoelectric signal), and figure out how to make this generate the 120 "inputs. After that, how to assign functions to the 120 inputs so that text can be generated.

Now where is that big red "that was easy" button.....

Again, any pointers would be appreciated.

Paul

3

Thank you Richard! Just posted a reply. just started a discussion at the prosthesis forum to gather information myoelectric input.

I do hope that this develops as people with prosthesis find it almost impossible to use touch screens. I am hoping that the Arduino could be used to send a data stream from myoelectric signals to PDAs and "smart phones".

This could really help more people than I ever thought possible.

Paul H

4

You might want to check out V-LINC. Their website seems focused on Maryland, but I think I read an article a while back that said they have chapters.

5

Thank you Ran, they were kind enough to contact me and tell me about the Penn State project as well as BLINK.

PaulH