AVR Node Editor - booster project

This is screen shot of first project made using my AVR Node Editor (and it's working) but there is still much work to do. Basically what this logic does is it starts engine when the pressure is lower then set value and then stops engine when pressure excidees another value. By start/stop engine I mean energizing coil of connected relays and by pressure I mean voltage on potentiometer (picture below). Project is running on arduino nano.

AVR Node Editor testing set

Recently I made a testing set for my AVR PLC. The PLC (on the right in the image below) is connected to K8055 USB experimental interface board (on the left in the image below). After I connect K8055 board to my PC I can control its digital and analog inputs/outputs using special software. There is also a special DLL library so you can make your own software to control this board. My goal is to use this library with Unreal Engine to make virtual plants that will be controlled with my AVR PLC device.