I have what I think is a pretty simple question/project, but I'm running it here for a sanity check.
I want to build a very small LED matrix display, and already have a bunch of TA-07 cathode-row 5x7 matrix displays (2.1Vf, 10mA) that are ideal for the project. Is there any reason at all I can't just wire up the common row pins (cathodes) together and slap some transistors and a shift register to do the scanning, while putting limit resistors and shifters to control the columns?
I'm just assuming there's nothing special about those modules aside from the fact they're already wired up in a 5x7 matrix. I just want to use them together as a unit. I've got some Max 6953s, but I think I'd have to use cathode-column matrix displays in that case.
Anyway, as I said, I don't think there's anything crazy about what I'm considering, but I also like tapping into the smarts of others for a sanity check. Thanks.