Hmmm, just ran into a gcode sample to causes the tinyg to continue running off the work area - This is a name plate laser cut, and it gets so far then just loses it and starts drawing a line going off the work area.
Tinyg was upgraded to edge 4.38.02 and the issue happens with both Chilipeppr and tgFX so it looks like a firmware issue. There's a screen shot of nc-corrector and what it should look like (ToddName_ShouldLook.jpg), the gcode (NameTodd_0001a_F300.nc) and a screenshot of the tgfx display showing where at the top of the 'f' in Jeniffer it just stops drawing and goes into straight line mode to east north east. Also a photo of it shown better in a scrap piece of plywood.
Repeatable, happened twice - again after reset and switching from Chilipeppr to tgFX.
I'll look at it closer in nc-corrector and try to find the code that breaks the controller.
Ah - still learning - this gcode was created from a 'laserengraver' plugin for Inkscape - deleting the line with the outsized I/J values:
G02 X82.0769 Y29.6052 I21644.8026 J-86331.8286 <– unusually large I/J
which barely draw anything in simulator - and it works fine. Tuned my setup with running the json serial port server on an old box in the garage and sending from Chilipepper on a more powerful notebook and worked perfectly several times (testing feed rates on different types of wood)
Problem solved, happy lasing.
Also, drawing tiny letters at 300mm / minute really makes the motors sing ;) I'm impressed with this controller.
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