I upgraded my project from a bulky Arduino Uno to a tiny Type-C Arduino Nano so it would actually fit inside my custom handheld controller case.

I set up a virtual circuit in Wokwi and wired up two analog joysticks to my Nano, mapping them across pins A0 through A3. When my code wouldn’t compile because of a few stray brackets on a print line, I fixed the typo. Then, when I ran the simulation and realized my joystick inputs were completely inverted and reading on the wrong axes, I wrote a troubleshooting script to see exactly how the hardware was reading my hand movements.

I also went through my 3D design files and identified each of my CAD models, figuring out exactly which ones were the controller top shell, the chassis base, the full robot assembly, and the drivetrain gear setup.

Finally, I pulled everything together—my code, wiring schematics, building instructions, CAD images, and an interactive PCB badge—and wrote one master README file for my GitHub repository so anyone checking out my profile can see exactly how I built it.