This topic has been covered a little before, but I am looking for more basic information than I have been able to find on the Arduino Forum. This post from the archives covers wiring an 5 x 7 LED matrix: http://forum.arduino.cc/index.php/topic,25643.0.html
However, the response is, for me, a little tricky to understand. I am using this matrix: http://www.farnell.com/datasheets/1701174.pdf
I have been trying to wire it up to work with the Arduino. Unfortunately, I am from a programming and art background, not an electronics one, and I am stumped at the earliest point. I am really unsure how to wire this matrix to and from an Arduino, and from which pin a ground should go. From testing (as per the forum post mentioned above) I have identified the cathodes in the pins and which row each cathode corresponds to. The columns light when I place power against the remaining pins (7 of these). What I am completely missing is what order power needs to enter and leave this matrix, and how each row/column should be connected to gain full control over the matrix. If I could even get a diagram or an explanation of how to light all of the LEDs at once that would be something, as I could whittle it down from there. But at the minute the best I can do is get one or two LEDs to light up while feeding in power from a 5v battery.
Also, as the schematic in the PDF above makes little or no sense to me, I have been using a 1k Ohm resistor to avoid blowing the bulbs, with 5V power source. If anyone has any advice on what power source/resistor would work best with these that would also be appreciated.
Hope you can help and thanks in advance! Apologies for my lack of electronic know-how.