Just drag and drop prefabs to build a UI without coding, and you can concentrate efforts on programming Arduino.

Read manual.htm, try

and get a license for your system

     id:

Features are:

• Various UI parts to receive and send texts, integers and floats
• Unity Console window also to receive texts, useful especially for debugging
• 5 kinds of sounds ringing by requests received
• Library for easy Arduino programming
• Just a click on the menu to generate Arduino codes for the UI you built
• Communication through serial ports(COM) (Later versions will add other ways like TCP/IP)

Unity is required. Unity is used generally to build an application after editting and running in it, but MiniLab is not a set of parts to build applications, and it runs only in Unity Editor.