K40 running a mini gerbil v3 not homing getting alarm 8

getting this when homing
$H

ALARM:8

Homing fail. Cycle failed to clear limit switch when pulling off. Try increasing pull-off setting or check wiring.

ok

Grbl 1.1f [‘$’ for help]

[MSG:‘$H’|‘$X’ to unlock

my settings are
$$

$0=10

$1=255

$2=0

$3=2

$4=1

$5=0

$6=0

$10=0

$11=0.010

$12=0.002

$13=0

$20=1

$21=0

$22=1

$23=1

$24=2000.000

$25=6000.000

$26=250

$27=1.500

$28=5

(Pwm freq 0-15)

$30=1000

$31=1

$32=1

$94=0

$95=0

$96=1

$97=0

$98=1

$99=1

$100=157.000

(x:stp/mm)

$101=157.000

(y:stp/mm)

$102=160.000

(z:stp/mm)

$110=12000.000

(x:mm/min)

$111=5000.000

(y:mm/min)

$112=5000.000

(z:mm/min)

$120=8000.000

(x:mm/s^2)

$121=3000.000

(y:mm/s^2)

$122=3000.000

(z:mm/s^2)

$130=320.000

(x:mm max)

$131=230.000

(y:mm max)

$132=200.000

(z:mm max)

it was working before. i changed the power supply out and now i can not home. i don’t think anything on the power supply would make this happen? i was able to engrave still with it like this but now nothing it just moves slightly left when homing. any ideas?

there was no issue before the power supply change and now it will not run with the new one properly. i did get it to engrave when i ran $x but now that will not work at all. not sure what i am doing wrong here.

It seems your error message is telling you what’s wrong or at least in a direction to troubleshoot… Have you verified your limit switches are connected correctly? Have you tested your limit switches are working as expected? Have you made any changes to the settings? Have you adjusted your pull off? If you can run $X to clear the alarm then run the machine temporarily I’d focus on your limit switches. If you replaced the power supply you’ve had your hands on or around the wiring possibly knocking something loose? Might help if you state clearly what you’ve tried and the results.

You might want to look at the makers site for help. They have a specific section for debugging homing issues. MG3 debugging – homing operation – AwesomeTech

You might also want to review the settings on your machine as you have several that are not default according to their list. Some may be relevant to your problem, other differences are not necessarily.

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