A Bridgeport milling machine has been converted to run from a 24VDC off-grid solar photovoltaic array with battery backup. The milling machine was previously driven with a 1HP 3-phase 480VAC motor; it will now use a PM 24VDC 1HP motor. This project focuses on the speed controller design as power wiring. This repo will manage the circuit development, Arduino firmware development, and documentation.