So while i was silenced by the forum for being a new account (good policy to avoid spam), i managed to find a “solution” to my problem.
As i said earlier, the printer homes for about 1cm, and then gives up and throws the error. So if i move the machine into home, and the asks for it to home, it will home just fine, and i have been laser cutting/engraving the past couple days. It is a bit annoying having to move it to home by hand every time though.
The Z axis you have to enable in the controller
Edit → device settings Top right coner
… the issue of having to home within 1cm (10mm) is odd, is almost as if your size is not set propperly
I remember on extended machines when users forget to change their $131 from 400 to 800 and try to home from the back machine fails homing because it exceed the expected range of the bed
Your problem is different htough it seems
Hope you do find a solution! and if so let us know please 
No apology needed. We all went thru the startup process on the forum.
It can still be related to the GRBL parameters. I will be traveling tomorrow and you found a workaround, so no hurry on anybody’s part.
In the Console window, enter $$, then enter $#, and then ? (3 commands total) in this order. Then copy what you see in the Console window and paste it in the Reply box. Several members will look at the numbers and see if anything is wonky.
So here are the results, please let me know if i can provide anything else:
$$
$0=10
$1=250
$13=0
$20=0
$21=0
$22=1
$23=0
$24=50.000
$25=635.000
$26=250
$27=1.000
$30=1000.000
$31=0.000
$32=1
$100=80.000
$101=80.000
$110=10000.000
$111=10000.000
$120=500.000
$121=500.000
$130=220.000
$131=220.000
ok
$#
[G54:0.000,0.000,0.000]
[G55:0.000,0.000,0.000]
[G56:0.000,0.000,0.000]
[G57:0.000,0.000,0.000]
[G58:0.000,0.000,0.000]
[G59:0.000,0.000,0.000]
[G28:0.000,0.000,0.000]
[G30:0.000,0.000,0.000]
[G92:0.000,0.000,0.000]
[TLO:0.000]
[PRB:0.000,0.000,0.000:0]
ok
?
<Idle|WPos:0.000,0.000,0.000|FS:0,0|WCO:0.000,0.000,0.000>
ok
I would set $27=3
These are pretty high for a leadscrew machine. My gantry machine is only 6000. I do not have the settings for my 3D printer, but my 3018 mill shows only 2000 mm/min.
Here your Homing seek and feed are much lower. If you put the machine on the Home switched, there is no flat out command to head for the switches. I say reduce the $110 and $111 to 2000 and see if that cures the problem.
This has been tried, i have even gone to 5, but all this achieves is that the homing process seem to “ram” the endstop, slightly violently. It doesn’t change the “give up on homing after 1cm movement” issue. Thanks though!
I changed $110 and $111 to 2000. Still no improvement on the “give up after homing for 1cm” issue. Also it’s not actually a leadscrew machine, but a belt-driven machine, if that matters.
Another possibility is noise on switch lines. I put opto isolators on mine.
Yes, it matters. I might have been thinking of another machine. If not already, go ahead and set them back to 10000 if you want.
You say the motion controls work okay and the head heads towards the limit switches. This indicates the parameters for direction control are correct.
This could be the problem, but first more questions. I did not see a mention of an alarm message. When Homing halts, does an error message show in the Console window or on the machine display panel?
In the Console window, enter $H and share what you see in the window.
Check the belt tension on the X and Y axis. I had the same issue with my machine and the belts were too tight. If you tilt the machine first on one axis then the other the carriage should slowly move from the front to back and left to right.
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