Design and build a robotic arm with no CAD experience
A builder used Claude Code with FreeCAD and Claude Vision to design, print, and assemble a 5-DOF servo arm with vision and voice control.
What they did
Claude Code wrote one Python macro that FreeCAD re-rendered live, building every part of the arm from boolean operations. The builder iterated by conversation, then printed and assembled the arm. For control, a laptop script sent Whisper speech and a webcam frame to Claude Vision. Claude returned JSON actions, local inverse-kinematics code converted target pixels to servo angles, and an ESP32 drove the servos.
How it went
About 30 hours from design to assembly produced four working servos. The gripper is not built, there is no feedback loop, and the pixel-to-world calibration is only approximate.
Worth knowing
Expect print fixes. The builder taped two servos, glued a lid, reprinted the base turntable, and replaced a failed print-in-place hinge. FreeCAD's macro runner also needs ASCII-only scripts.
Labels
The builder iterated by conversation, then printed and assembled the arm.
Claude Code wrote one Python macro that FreeCAD re-rendered live, building every part of the arm from boolean operations.
For control, a laptop script sent Whisper speech and a webcam frame to Claude Vision. Claude returned JSON actions, local inverse-kinematics code converted target pixels to servo angles, and an ESP32 drove the servos.
A builder used Claude Code with FreeCAD and Claude Vision to design, print, and assemble a 5-DOF servo arm with vision and voice control.
The “Material” label failed its quality check and is not used for selection.
Details
- Agents
- Claude Code
- Source
- other
- Source date
- undated
- Accounts
- 3
- In registry since
- Oct 12, 2026