RoboArm is my attempt to build a reasonably useful stationary manipulator arm out of off-the-shelf parts, random stepper motors and the same cheap 3D printer I used for RoboDog. No custom PCBs, no industrial hardware, just whatever I can buy easily and force to work together.

An ESP32 will handle all low-level control: stepper driving, homing, limits and basic motion. On top of that I want a simple API over USB, Bluetooth and WiFi, so any “brain” (laptop, Raspberry Pi, etc.) can send high-level commands.

The mechanics and motors are still firmly in the “I have no clue what I am doing” phase. The goal is a 3D-printed structure that can move reliably in a few useful directions and later be used to automate small tasks at home. As with the dog, I’ll document the full process: bad ideas, redesigns, failures and hopefully a working arm that’s reproducible for anyone with basic electronics knowledge and a 3D printer.