Hello!
I am trying to find out if this display is common cathode or common anode, but I can't find anything on it. It's a Hewlett Packard part# HP QDSP-3892. Any ideas?
Thanks for your time!
according to what I can see in the libraries I have all QDSP-* I have are "common anode", but this does not mean anything, so imho the best way is to check is to try with 1.5V battery and a 200 ohm resistor