flashing array

[m_brain2009]

hello

I need to make a flashing array consits of (6*6) buttons.

Each button is at a distance from the others -next to it- by at least 3cms and has a letter written on it, empty buttons will be used later (letters should be clear for the observer ) . The flashing should be done in five rounds in each round all buttons are flashed in adifferent sequence from the other rounds .After all rounds are done they automatically run again.when any button flashes its index(address) should be obtained for a further test.

Thank you for being helpfull. 

[RavensFan]

Wow, can you use a normal sized font next time?

What do you mean by flashing?  You say buttons, but do you really want a boolean LED array?  Do you want it to flash once or flash repeatedly?  Is there some kind of timing?

You've given a lot of detail on the number of rounds and repeating it, without giving any detail on what it is you are really trying to do.  What do the letters have to do with this?  How is the user supposed to interact with this program?  What does "when any button flashes its index (address) should be obtained for a further test" mean?  What further test?  How do you "obtain" it?  Wouldn't your VI already know what has flashed because you would have written the code to generate the flashing sequence?

[m_brain2009]

Sorry, I did not mean to shout . I just wanted the the font to be easier to be read.

I am acquiring EEG signal using serial port. I have an array of boleen LEDs in which every LED has a letter written on it . These LEDs light up in a certain sequence . The user should concentrate on one letter written on one LED to write it with his thoughts . lighting the intended letter is a visual stimuli that generates an unordinary signal called p3 . This signal appears after 300 ms of the occurence of the stimuli .So, I need to extract the segment between 150 and 600 ms after every LED lights up .Then I will use these segments to train a machine learning technique called "support vector machine " to distiguish the p3 from the ordinarry signals . and then perform some way to identify the intended LED ,and so the corresponding letter.

If there is any better method than LEDs to make the array tell me ,plz. 

I hope that I could clear what I wanted this time.

Thank you .

[smercurio_fc]

You've posted this in three different threads. This one here, this one, and this one.

Please pick one thread so all of the information is in one place. 

[m_brain2009]

Hello

I will be pleased to recieve your suggested solutions in this post.

thanks.

[Lucither]

Your description isnt very easy to follow. If you could be more specific, maybe post some code that you have tried i would be willing to take a look for you.

[m_brain2009]

this is the array i made if you have a better method i will be pleased.

[smercurio_fc]

You can simplify that code by using a loop:

[James_W]

Love the loop Saverio (pity it counts 147258369 - but that is easily rectified), and Henry has posted a great idea for synchronising the complete system in one of the other threads.

Brain, you need to post in the other threads to say which thread you are using. If you can use an Electroencephalogram, you can create a hyperlink to point the people tryint to help in the direction of this thread!

Now eyes open.... eyes closed, eyes open.... eyes closed, [and change the flash frequency]!!

[smercurio_fc]

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James W wrote:

Love the loop Saverio (pity it counts 147258369 - but that is easily rectified),

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