scanner

Hi i'm new to the forum, and i was wondering how can i get my printer/scanner to work properly with my RT-AX56U with Asuswrt-merlin 386.2_2 i already tried this tutorial https://github.com/RMerl/asuswrt-merlin.ng/wiki/Network-Scanning-With-Sane but i always get "can't establish connection to...

Inspired by the article here.... floating out an idea... As part of the poll - some options are below the price to develop, some break even, some give me a bit of profit.... I can do it - handheld and battery powered, with a local display, and a couple of buttons to change modes, totally...