K40, Cohesion3d - Start button briefly starts the project then the laser homes

I have the Cohesion3d board in my K40 - I recently got everything up and running, however when i send a project to the laser it cuts for a brief second then re-homes. If I press “start” again the project runs fine: this even happens when I preemptively home the machine before a cut, raster etc. (Running the Smoothie that came on the SD; its recent)

Any suggestions?

The re-home happens when the board browns out or drops the USB connection. LightBurn re-connects, then runs the home on connect behavior again. Check your USB cable, connection, and grounding for starters. Cohesion3D’s knowledge base should have troubleshooting tips for USB connection issues.

great thanks Oz

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