Mt300n v2 SANE scanner deamon

Hi.
With help of good people from this forum i successfully set up printserver via p910nd on my mt300n v2.


Now i need help for setting up SANE scanner demon as my printer is also scanner (hp dj 2130).
I followed this tutorial
http://zed.0xff.me/2011/06/09/setting-up-a-scan-server-on-openwrt-and-netgear-wndr3700
After i install kmod-usb2 usbutils and ssh ~# lsusb a get
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 03f0:e111 Hewlett-Packard
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
At step 4. Install SANE frontends & backends i can’t install sane-backends-all because lack of free space so i followed this tutorial
https://karl.kashofer.org/?p=333
and install partially dependencies from sane-backends-all and all sane-hp dependencies (my scanner is hp dj 2130 aio) but after SSH sane-find-scanner i always get -ash: sane-find-scanner: not found
So, where am i doing a mistake?
Thank you.