Will not HOME version 0.9.20

Using ORTUR 2 laser.
Just loaded version 0.9.20 and it will not HOME. In fact it doesn’t move the laser at all.
Had no problems with version 0.9.19 would like to go back to it, but not sure how.
Any help, PLEASE. Below is from the Console on LIghtburn.
Waiting for connection…

Waiting for connection…


[AUTHOR: RenShen]

[MODEL: Ortur Laser Master 2]

[OLF: 137]

[DATE:01:15:16 - Apr 20 2020]



Target buffer size found




Homing fail. Could not find limit switch within search distance. Defined as 1.5 * max_travel on search and 5 * pulloff on locate phases.


Ortur Laser Master 2 Ready!

OLF 137.

Grbl 1.1f [’$’ for help]

[MSG:Check Limits]

[MSG:’$H’|’$X’ to unlock]

[MSG:Caution: Unlocked]


You can revert back if you’d like. We provide access to our version archive.

@OrturTech, could this be failed limit switch?

LightBurn only sends the command - the machine itself is what performs the homing operation, so the timing is a coincidence. You likely have a loose cable, broken wire, bent limit switch, or something along those lines.

Also, check the switches to make sure they’re being contacted properly. I’ve seen at least two cases where a user added a drag chain or something else to help manage the wires and had it catch on the gantry, preventing the laser from getting to the home switch.

With your description and Alarm 9
I suspect your power supply is not fully engaged or plugged in
The motherboard will power up by USB only.
Please recheck power supply connection

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