Hi to all!
As title, I did found this tutorial:
http://www.multiwingspan.co.uk/arduino.php?page=matrix
But, can you tell me if this configuration is anod common or cathod common? And how recognize them?
Thank you very much!
Basically this is a common anode configuration, only because the resistor is in the cathode.
But the terms are virtually meaningless when applied to a ready build matrix as they are in essence either.
Thank you Grumpy_Mike.
So, if resistor is in cahotde, is common anode, otherwise is common cathode.
Please, can you explain your last sentence? Thank you!
So, if resistor is in cahotde, is common anode, otherwise is common cathode.
Well if you have to put a definition on what you had that is how I would define it. But this is not strictly correct.
But the terms are virtually meaningless when applied to a ready build matrix as they are in essence either.
The term does not apply to a matrix. They have both common anodes along the rows and common cathodes along the columns, so they can be wired up as either common anode or common cathode. The term is only meaningful with LEDs that have a common connection of more than one LED in a package.
Why do you want to know anyway? It will not affect anything you do with a matrix.
See this http://www.thebox.myzen.co.uk/Workshop/LED_Matrix.html you will see the term is meaningless when talking of a matrix.