OK, so I just purchased a new unopened S20 from an Ebay vendor because I needed more power than my A5. I am still very new at this, so it is easy to doubt myself! Anyway, my burn tests show that the A5 is more powerful than the S20. What the heck? The burn test was downloaded from the LA Hobby Guy, so the settings were already in the file for both the A5 and the S20 burn. So, the question remains…is it me or is there something wrong with my new S20? Running Lightburn on a Windows 10 machine.
The attachment shows the screen when I printed the burn from the S20.
Any help would be greatly appreciated. Thanks in advance.
Not necessarily. This can also be caused by different settings. Show a comparison of the device settings window. How did you add the lasers? Add them as type “grbl” (nothing else).
Thanks for the help!
When I set up the A-5, Lightburn found the laser automatically. When I tried to set up the S-20 I could never get it to find the laser, so I put it in manually, not knowing I would need to make any adjustments. Changing the S-max setting to 1000 certainly made a positive difference, but I don’t know if that should be the value in that box or should it be something else, and if so, where would I find that number. Also, is there anything else I should change?
I kind of figured all along it was probably me, but I was not sure where to look.
I really appreciate your help on this.
Yes, that looks like the difference. Sometimes autodetection works wrong or you clicked the wrong option in the setup wizard. It’s important for current machines to have them added as “grbl” devices, not “grbl-m3”. This is an older version of the firmware, that used different values for the power level. Originally, it was 0-255, now most firmwares use 0-1000.
Check the firmware value $30 (max spindle speed). This value and the s-value max need to match. Only then the percentage in the LightBurn layers are the same as the power output level.
This will cause the difference because the S-20 was running at 25% maximum in your tests. (LightBurn was told that the maximum value is 255 and did not send higher ones, and the firmware inteprets 255 as 25%, since it should have 1000 set as maximum).
Hi Melvin,
Found this in Lightburn (attachment.) I believe this is what we were looking for to complete my set-up.
If there is anything else I should check for, let me know, but I think with all of your help, you now have me off and running.
Really, really appreciate your help. Now I can start on those Christmas projects my wife wants me to do for her dog training students!
Thanks again
Dennis
