Since I didn’t have any effective output devices like LEDs with me,

I tried to use UE as my output terminal, combining Arduino with UE5 to experiment with a simple circuit.

I chose the most direct and simple method: serial communication — UE Blueprints.

First, I downloaded the GitHub plugin:

https://github.com/videofeedback/Unreal_Engine_SerialCOM_Plugin/tree/main

This plugin is specifically designed for communication between Arduino and UE, and it’s called Serial Communication Plugin.

How to load this plugin into a UE project?

1. In File Explorer, locate your project folder and create a new folder named “plugins” inside the secondary directory.
2. Drag the entire unzipped plugin folder into this “plugins” folder.
3. In the Content folder of the plugin, find the Blueprint files and copy them into the project’s Content folder.

Finally, drag the Blueprint file into the scene, locate it in the Outliner, and then edit the Blueprint.

可以看到在蓝图中可以调整i相应的波特率以及串口等数值。

蓝图中可能出现的错误是，当关闭了实时链接时，并没有关闭端口。

为了避免这种情况的发生，蓝图设定了在项目运行时，按下Q关闭串口，按下空格打印字符，按下Z重新开启串口。

成功联通！