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M3=off M4=on

Hey guys, I've dug my old K40 out and i'm struggling to get her going again.

Tube is fine, burning good.

My issue lies with the M3,M4,M5 codes

In console they act like,
M3=off

M4=on

M5=nothing

 

I'm trying to run lightburn as i've had enough of cncjs.

Board will not fire on GRBL-M3
Will not respond on Gerbil-STM

Will work on GRBLĀ  but laser is continuously on.

Can you guys shed any light on this please?

 

Thanks, Dan

 

 

Console output:

Spoiler
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2 setting for me to look at tomorrow

My $28=0

 

$28=5

$30=1000

Hi Daniel, it's hard to tell. Probably the LO connection is loose hence the laser stays on. $28 should be 5 (1.5kHz). A zero setting equals 60 Hz which is a bit low.

Cheers, Paul awesome.tech

Note M codes don't work when the gantry is not moving in laser mode $32=1

Cheers, Paul awesome.tech

Morning, I'll check the LO wire later today, it is just a jumper cable so it is possible.

Hopefully the $28 setting will help too.

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