Are you an electronics hobbyist ?!!!, doing with experiments, where some critical resistance value required , which are not commonly available in market . This project will help you select any desired resistance value in between from 0ohm to 10Mohm range at 1ohm resolution, for your electronics testing purposes.  This is a PIC microcontroller based project, but possible to migrate on any microcontroller.

How it works: Video Link
https://youtu.be/i5TQZnP6tE8