If it fails to home for any of the following reasons double-check the wiring: Contact cleaner or rubbing the ribbon cable contacts with a pencil eraser may help here. If it is successful, we know there’s a disconnect/intermittent connection between the ribbon cable and the laserboard. Retry homing the machine and see if it works. This will allow us to do more extended testing and narrow down where the problem actually is.įirst, we’ll begin by connecting the X stepper directly to the white 4-pin JST connector next to where you plugged in the Y motor. I’m not saying there’s anything wrong with your ribbon cable - if it works with the nano board clearly it’s functional. If you have some lengths of wire, please extend this so you can directly connect the stepper motor to the laserboard. This is the control wire for the X stepper. On the far left side of your gantry where the X stepper lives there should be a 4-pin connector on a small PCB (it will look identical to the connector for the Y motor on the Laserboard).
It’s going to be tough to debug this with the ribbon cable.
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