I recently for the first time changed the frequency ($28) from 10000 to 1000 to engrave stainless steel. This worked well and I was very pleased with the result. What other materials need to use a different frequency than the set frequency of 10000?
I’m not a grbl wizard, but $28 doesn’t appear to be standard grbl. Atomstack uses $33 for pwm period.
The only reference I found to the resultant period is this chart where it maxes out at 14.
With a ssl (diode) it determines pulses/mm. A co2 it depends on if the pwm goes to the lps L (H) laser enable or to the IN pin for power control. If it’s laser enable, it’s likely that anything over 1kHz could be a problem.
Thanks Jack. What I failed to say in my post was I use a 10/30 W Diode
When the signal goes high the laser is turned on. The faster you toggle the frequency (shorter period) the more pulses/mm you will put down…
There is a certain limit to what is useful… Most people don’t notice much if any difference.
You would need to look at your documentation to see if there is a range or it’s fixed steps.
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ok
$28=
error:2
Numeric value format is not valid or missing an expected value.
$28
$28=3000.000
ok
I had no idea this one existed in the Sculpfun S30 Pro controller with this value. I do have a note that $28 is for axis squaring in a 2-Yaxis motor setup.
That would make $28 a dual purpose parameter. I need to get the source code from @misken to see what else is hiding in there!
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