How do I control an LED message board via USB?
I am trying to control an LED message board via usb.
It has a manual keyboard on the bottom that upon closer inspection has 8 wires on one side and 7 on the other.
By placing a wire between a wire on one side and a wire on the other a character is inputed.
So by using some sort of USB interface with at least 15 pins I think it must be possible to input to it via USB.
e.g. When A is pressed wires 8 and 15 should be connected in order to input A, for B wires 8 and 14 should be connected, ect.....
I am also getting my Rasberry Pi sonn and was thinking that the GPIO pins could do this but i'm not sure.
This website documents a similar project using the same display but via a different method: http://srimech.blogspot.co.uk/2003/04/led-message-board-hacking.html
Thanks for reading, please help!!!!