This document describes an automatic PCB designer based on a CNC system. It uses a robotic arm to plot circuit designs onto copper boards according to instructions from a controller. The system aims to overcome limitations of existing PCB printing methods like screen printing and manual printing by being lower cost, requiring less labor, and being faster. It works by using a robotic arm with stepper motors on three axes to precisely position a plotting bit on the board as directed by G-code instructions. This allows it to design complex PCB layouts accurately and automatically.