I have one of these (https://www.amazon.com/MYSWEETY-Control-Engraving-Controller-Engraver/dp/B07S2R59N6) if you want it. I took it off my 3018 when I was upgrading my 3018 to a 300w spindle and bought a MOBO that could control the spindle directly. Only problem is that it doesn't have the emergency stop connector. On my machine I wired it to the output of the power supply. It's yours if you want it.