Changed $ values

#1 · December 18, 2019, 7:03 am

I have changed the $30 and 110,11 values, via LaserWeb (server running on a Pi, client on my laptop) on my Legacy Gerbil, but if I leave it powered off for any length of time (a couple of hours or so) then they seem to go back to the default. Anybody got any idea why?

Thanks in advance

Phil

#2 · December 18, 2019, 9:08 am

Hi Phil,

I have come across this issue only once. Check whether there is a $RST=* command in Laserweb (initialisation script or start up lines).

Another reason could be that the memory gets corrupted (checksum) and Grbl goes back to the defaults. This is possible by a power glitch when powering up the machine. Maybe try to power the legacy Gerbil board via a 9V battery and see if that solves the issue. If it does that you might need to power the board from a separate power supply or add some capacitors to the power line to reduce the start up spikes. (EMI filter)

Cheers, Paul

Cheers, Paul awesome.tech

#3 · December 18, 2019, 9:35 pm

Well, weird... They didn't change from last night until this morning. Do you know if these values are stored anywhere in LaserWeb and can get overridden?

#4 · December 23, 2019, 10:33 am

I suspect that a supply spike does corrupt the settings. May be leave the board under power and see if it does reset or not. If it does that we probably have a power spike issue.

Cheers, Paul awesome.tech

#5 · December 25, 2019, 3:59 am

I can easily power the gerbil from another PSU to test that easy enough. Where might the RST command be in LaserWeb exactly?

Thanks

#6 · December 25, 2019, 4:24 am

Also Paul, does the original Gerbil work ok with Lightburn? Does it replace the inkscape plugins and LaserWeb completely?

Thanks

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