what is vanchor-cad fr?

Vanchor CAD is the hardware design side of a project called Vanchor, which is an autopilot system for a trolling motor, the small quiet motor boaters use for precise, low-speed steering on fishing boats. This repository holds the 3D-printable design files for a steering servo, the mechanical part that actually turns the trolling motor's shaft based on commands from the autopilot software in the separate Vanchor firmware repository. The servo design uses a small self-locking worm gearmotor connected through 3D-printed gears to turn the motor shaft, with a magnetic sensor called an AS5600 that reports exact position, plus a hall sensor pulse used to find a reliable zero point when the system starts up. The whole thing is built to be sealed and watertight, since it lives on a boat, and every part is meant to be 3D printed at home. The project is organized into folders that show its history: the newest version, called ai2, is the current active design with a sealed hub, rubber-like lip seals, a silicone gasket formed in place, and parts sized to account for the small tolerance differences you get from 3D printing. Two older versions, ai and original, are kept but no longer being updated, showing earlier attempts at making the design watertight. To use it, you set up a Python virtual environment, install the listed dependencies, and run a script that generates the STL and STEP files, which are the standard formats used to send a design to a 3D printer or into other CAD software. There is also a verification script that checks for part interference and other fit problems before you print anything. The README recommends printing a small test-fit piece first to confirm your printer can hit the required tolerances before committing to the full part. This is a niche, specialized hardware project aimed at people building or customizing their own trolling-motor autopilot hardware.