In this simple example, we press a button in Unity repeatedly. Then Arduino turns on and off the built-in LED and also changes the button text and color.

Unity windows will looks like above, if you import MiniLab unity package. There are 8 Controls (UI parts) as prefabs in Assets folder. Here a Push button Control is dragged from there into the scene. The corresponding Arduino code is as shown above.

The overall codes were generated by a menu in the Inspector when Bench selected in the hierarchy window. In the MiniLab's Inspector we set Baud Rate and Port (COM) number.

Press the Play button in Unity, and click the Push button repeatedly. You will see the button text change between "Hello" and "World", with button color changes. You will also hear system sounds.

EXPANDED TECHNICAL DETAILS

Mixed-Reality Graphical Control Interface

This project uses the Unity game engine to create an advanced, high-fidelity 3D user interface for controlling Arduino-connected hardware.

• C# Serial Bridge: Implements a robust serial communication layer within Unity. The PC sends real-time byte commands to the Arduino based on the user's interaction with sliders, buttons, and 3D objects in the virtual scene.
• MiniLab Visualization Dashboard: Integrates with the MiniLab suite to provide real-time graphing of incoming sensor data (like temperature or light) directly on top of the Unity 3D UI.

Performance

• Windows 10 Latency Optimization: Optimized for Windows 10 high-speed serial ports, achieving sub-30ms response times for fluid, real-time control of robotic arms or LED arrays from the PC.