Has anyone used one of the Radio Shack 7-Segment displays?
I picked a single display up and wanted to try wiring it to the Arduino. I cannot get it to even light up!
When searching for wiring diagrams I noticed this display has 2-common cathodes. Should both be wired to Dig0 on the Max7219? Do I need resistors between the Max and each Anode?
Sorry, I'm still a newb, and the wiring diagrams do not seem to discuss how to handle this directly. I'm hoping I haven't burnt out the display or the max.... Is there a way to simply test it? I wanted to gear-up for my Sparkfun 8x8 LED matrix, but this hasn't gone so well!!
Thanks for the help!!