PWM not getting power

X-Carve Troubleshooting
1

looking for some help with a problem im having. trying to get pwn signal to the laser. trying to get it on to focus the beam.

with these settings
$30=255
$31=0
$32=1
i run M03 S25 and receive no output readings. volts stay 0.0

but if i do this
$30=0
$31=255
$32=1
then run M03 S25 i get 5.0 volts. but no matter what Sxxx value i use, the volts do not change, always holds at 5

Grbl 1.1f [‘$’ for help]

$$
$0 = 10 (Step pulse time, microseconds)
$1 = 255 (Step idle delay, milliseconds)
$2 = 0 (Step pulse invert, mask)
$3 = 4 (Step direction invert, mask)
$4 = 0 (Invert step enable pin, boolean)
$5 = 0 (Invert limit pins, boolean)
$6 = 0 (Invert probe pin, boolean)
$10 = 115 (Status report options, mask)
$11 = 0.020 (Junction deviation, millimeters)
$12 = 0.002 (Arc tolerance, millimeters)
$13 = 1 (Report in inches, boolean)
$20 = 0 (Soft limits enable, boolean)
$21 = 0 (Hard limits enable, boolean)
$22 = 1 (Homing cycle enable, boolean)
$23 = 3 (Homing direction invert, mask)
$24 = 25.000 (Homing locate feed rate, mm/min)
$25 = 2000.000 (Homing search seek rate, mm/min)
$26 = 250 (Homing switch debounce delay, milliseconds)
$27 = 1.000 (Homing switch pull-off distance, millimeters)
$30 = 255 (Maximum spindle speed, RPM)
$31 = 0 (Minimum spindle speed, RPM)
$32 = 1 (Laser-mode enable, boolean)
$100 = 40.000 (X-axis travel resolution, step/mm)
$101 = 40.000 (Y-axis travel resolution, step/mm)
$102 = 188.976 (Z-axis travel resolution, step/mm)
$110 = 8000.000 (X-axis maximum rate, mm/min)
$111 = 8000.000 (Y-axis maximum rate, mm/min)
$112 = 500.000 (Z-axis maximum rate, mm/min)
$120 = 500.000 (X-axis acceleration, mm/sec^2)
$121 = 500.000 (Y-axis acceleration, mm/sec^2)
$122 = 50.000 (Z-axis acceleration, mm/sec^2)
$130 = 790.000 (X-axis maximum travel, millimeters)
$131 = 790.000 (Y-axis maximum travel, millimeters)
$132 = 100.000 (Z-axis maximum travel, millimeters)

im at a loss on this one so i had to ask for help. im sure im forgetting something to tell you… but im sure someone will remind me.

Thanks for your time and help!
Mo

2

Your grbl settngs printout would indicate that you don’t have 1.1f loaded unless there have been some recent changes to 1.1f.

If you want to use grbl version 1.1f with a laser it has some odd requirements that are included in its “safety” mode which modifies the way some G-code commands work.

If you don’t need the feed rate or spindle speed over rides there is a way to use the laser without having to deal with G-code changes ( a modified version of 1.0c)

Here is the documentation that would allow you to use 1.1f.

What software are you using to send the G-code? (I’m guessing - Easel?)

3

ugs.

ugs-ss
ugs-ss1280×1024 95.8 KB

4

Just to do a little clean up.

For 1.1f

Set $10=1
Set $25=750.000 (your value is way to high for this)

You will need to read the document above to use your laser with 1.1f

5

thanks mate! its all working now… i was miss reading the info from the document. i have a fault in the wiring of my brain…

~Mo

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