Here one would expect summary of this project before tech-at-home contest deadline, what technologies I discovered, what difficulities were solved and soon. In fact, this project was not easy and unfortunately, I didn't manage to finish the project as Iimagined. Detailed schematics is missing and also I planned to conduct validation of my multimeter against known high precision multimeter, as well as perform in some experiments to show usefulness of such as test gear.
Right now I'm typing this from a hospital ward, with great difficulities. The real lesson learned here is how is human life fragile and how important is to have your loved ones. Take care.