Circuit-Digest/DIY-Robotic-Arm — reverse-engineered prompt

Build me a beginner friendly DIY robotic arm project for an Arduino Uno that controls a 6 degree of freedom arm with six servos.

I want a simple web dashboard that opens in Chrome and works offline. It should connect to the Arduino over Web Serial, let me move the base, shoulder, elbow, wrist pitch, wrist rotation, and gripper with sliders in real time, and keep the servo movement smooth with safe angle limits. Please include a way to record a movement sequence, save it as JSON, load it again, and replay it.

Also create the Arduino code for the Uno using the pin setup from the project, base on D3, shoulder D5, elbow D6, wrist pitch D11, wrist rotation D10, and gripper D9. Make it easy for a student to understand and modify. Add clear setup instructions in the page or README, including centering servos at 90 degrees, using an external 5V power supply for the servos, and connecting grounds together.