HP PSC 1510 All-in-One scanner on Fedora
I have this old all in one printer that I use only to scan.
I use a Samsung Xpress SL-M2023 to print stuff that even needs its own driver to work!
For some reason the scanner is not detected by default and I have fixed installing libsane-hpaio
sudo dnf install libsane-hpaio
and adding my user to the group lp
sudo usermod --append --groups lp <user>
is your user name!
After this you will need to restart your session!