Pages: [1]   Go Down
Author Topic: How to link two pins across the board?  (Read 435 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Karma: 0
Posts: 1
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hey, This is my first post/ project.

I have just got my hands on an uno board R3 and am looking to use it to control my LED message board.

In order to do this I plan on using the uno to emulate the keyboard of the device. After looking at the circuitry I have worked out that in order to emulate a key press I have to link one of the 8 pins on one side to one of the 7 pins on the other.

E.g A= pin8 and pin15, B= pin8 and pin 14, 3= pin3 and pin10, ect......

So I want to develop it so that pressing the 'A' key on my laptop sends the signal for the Arduino to connect pins 8 and 15.

Is this possible, it seems like it should be, and how do I go about this?

Thanks very much. smiley

* Photo on 29-05-2012 at 00.52.jpg (255.79 KB, 1080x720 - viewed 20 times.)

Offline Offline
Faraday Member
Karma: 111
Posts: 5225
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

If this thing is TTL level (5V), you could emulate the response of the button matrix. Probably the 7 pins are set to high one after the other, checking the other 8 pins for a signal. Make the 7 pins inputs on the Arduino and the 8 pins outputs. Wait for right input to be activated (let's say pin smiley-cool and put the corresponding output to high (pin 15 for an A).

Pages: [1]   Go Up
Jump to: