Unity Arduino Robotic Arm Integration

The digital twin of my 3-DOF robotic arm is already modeled and animated inside Unity; every joint, mesh, and shader is in place. What I still need is the glue code that lets the real arm inform the virtual one.

Here is where things stand:

• Hardware: each joint’s angle is coming from a dedicated potentiometer wired to an Arduino.
• Firmware: the Arduino IDE will be used to stream those angles over a clean, well-formatted serial packet (I have the pinout and ranges ready).
• Software stack: Unity 2022 LTS with C# scripts, running on Windows. I’m comfortable inside Unity but haven’t set up SerialPort or threading in C# before.

Your mission is to create the full communication bridge so that every time I twist the arm in real life the twin in Unity mirrors it in real-time (low latency, no stutter). A solid outcome for me is:

1. An Arduino sketch that reads all potentiometer values, maps them to degrees, and streams them at a configurable baud rate.
2. A C# script (or small set of scripts) that opens the serial port, parses the data, and applies the angles to the correct GameObjects in the Unity hierarchy.
3. Clear, commented code and a short read-me that tells me exactly where to drop the scripts, what serial settings to match, and any Unity project settings I must toggle.
4. A quick test scene or prefab so I can verify the link by simply rotating the arm and watching the digital twin move.

I’ll handle any cosmetic polish once the pipeline is running; what I really need from you is the robust, battle-tested connection logic. If this sounds straightforward, let me know how soon you can jump in and whether you foresee any pitfalls with serial buffering or thread safety inside Unity’s main loop.