G30 Insufficient Axes Homed For Bed Probing
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@deckingman @Phaedrux Hey Guys, can you explain what's wrong with this portion of my Home all? It's the "go back a few MM" G1 X5 Y5 F600
The homing works correctly except for this portion... It goes to X/Y max quickly, and slams into the end of the Max... I've tried a few different variants, but with the same result. I followed the example from here: https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCoreXYPrinter
The individual homing files work fine, and omitting this single line from Home all completes without incident.. I've tried to sort this one out myself, but I'm afraid It's right in front of me, and I'm just missing it..
G91 ; relative positioning
G1 Z5 F6000 S2
G1 S1 X-400 Y-400 F10000 ;move quickly to X or Y endstop and stop there (first pass)
G1 S1 X-400 F6000 ;Now do a fast move just on X and detect end stop
G1 S1 Y-400 F6000 ;Likewise YG1 X5 Y5 F600 ;go back a few mm
G1 S1 X-300 F360 ;move slowly to X axis endstop once more (second pass)
G1 S1 Y-300 F360 ;then move slowly to Y axis endstopG90 ;absolute positioning
G1 X190 Y150 F6000 ;go to first probe point
G30 ;home Z by probing the bed; Uncomment the following lines to lift Z after probing
G91 ;relative positioning
G1 Z5 F100 ;lift Z relative to current position
G90 ;absolute positioning -
I thought it was that line, but apparently it's not... it seems to have to do with the Z homing... I'll go back through the older posts above real quick..
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Ok, I'm tanked again... I've tried nearly everything above..
End stops are correct, home x, homey, homez work right... what did I screw up now?
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I'm wondering if your motor directions and coordinate system is correct.
Can you verify for me that the 0,0 origin point is in the front left of the print bed?
-x movement goes to the left, +x to the right
-y movement to the front, +y to the backAlso where are the end stops in relation to x and y movement?
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aaaaaaah! I didn't need that extra G90 prior to moving to the first probe point!
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That g90 should be ok there.
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Yes, all directions are correct, end stops are correct, I was putting it into absolute mode which was pissing it off! It seems fine now.
manual G code moves are as expected!
If I put the G90, it runs off to x300 y300+... if I remove it, it simply goes to the first probe position and homes Z as it's supposed to.. If it's working, am I ok to leave it out?
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If that move doesn't work as an absolute position move than I suspect that your coordinate system is not correct.
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Go through the movement section here again and do the motor direction test to verify that they are going in the right direction.
https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCoreXYPrinter#Section_Movement_section
Also, can you post your config.g and homing files as they are currently?
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All of the other homing files work fine however.. the buttons move everything in the right direction, what would you suggest I check? I mean if literally every direction I input is moving the right way, what would / could be off? wouldn't all homing files move in the wrong direction?
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@steve-lynch said in G30 Insufficient Axes Homed For Bed Probing:
G90 ;absolute positioning
G1 X190 Y150 F6000 ;go to first probe pointThis should move the head to the center of your bed, but it's moving it into the endstops, right?
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I have followed the tests on the link you sent several times.. yes, it moves as expected... I've been going back to that several times a day to keep a good baseline.. 0_1563565777236_config (1).g
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It should move to the center, but instead it goes to the max position on both axes... end stops are at the low end, or opposite end from Max
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; Axis Limits
M208 X-400 Y-400 Z0 S1 ; Set axis minima
M208 X300 Y300 Z360 S0 ; Set axis maximaYour axis minima is way off. I think there was a misunderstanding from the other day when I suggested changing the homing move distance to be -400. The M208 command should have stayed the same as it was.
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Aw This Boy, He's so smart! if I were a Grandmother, I'd pinch your cheeks! Thanks man! That was exactly the issue.. I'll put that in the Mental Filing Cabinet.. End stops are actual coordinates. Homing is beyond Equal or greater.. Thanks so much!
I believe this is Case Closed!
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aww shucks
