Set homing to Ymax position rather than Ymin
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I have a Dbot style printer that I've made and I have recently updated the firmware and made a fresh config file and I'm still working through getting all the bugs out. The latest issue I'm struggling with seems like it should be super simple, but I can't figure it out.
I hit home and the X axis goes all the way to left and clicks the endstop, then it tries to home Y and it comes all the way forward looking for a Y0 position. Unfortunately, my endstop is situated at the rear of the machine, so it's actually the YMAX that it should be looking for, not Y min. I had this working at one point, but I can't figure out what I did to make it home to the max position on the Y axis rather than Min. Anyone got a quick fix for me? I should be ready to start printing again once I get this sorted.
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M574 Y2
And your homing file will probably need to change to make it move in the +y direction.
If it's already doing a +y move but it's going to the front, then you'll need to check your motor directions.
https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCoreXYPrinter#Section_Testing_motor_movement
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right after I posted this I figured it out. I kept switching M574 to Y2 and expecting that to somehow change the homing files. Which is dumb. I flipped that, gave a positive Y value in the homing files and it seems to work! Time to try out the first print on this thing in almost a year.