soft limits reversed behavior

[El-kady]

Hello, Thanks for a great GRBL its awesome. I'm using 1.0.9 these are my $$

$0=5 (step pulse, usec) $1=25 (step idle delay, msec) $2=0 (step port invert mask:00000000) $3=0 (dir port invert mask:00000000) $4=0 (step enable invert, bool) $5=0 (limit pins invert, bool) $6=0 (probe pin invert, bool) $10=3 (status report mask:00000011) $11=0.010 (junction deviation, mm) $12=0.002 (arc tolerance, mm) $13=0 (report inches, bool) $20=1 (soft limits, bool) $21=0 (hard limits, bool) $22=1 (homing cycle, bool) $23=0 (homing dir invert mask:00000000) $24=25.000 (homing feed, mm/min) $25=20.000 (homing seek, mm/min) $26=250 (homing debounce, msec) $27=1.000 (homing pull-off, mm) $100=250.000 (x, step/mm) $101=250.000 (y, step/mm) $102=250.000 (z, step/mm) $110=2000.000 (x max rate, mm/min) $111=2000.000 (y max rate, mm/min) $112=2000.000 (z max rate, mm/min) $120=500.000 (x accel, mm/sec^2) $121=500.000 (y accel, mm/sec^2) $122=500.000 (z accel, mm/sec^2) $130=50.000 (x max travel, mm) $131=50.000 (y max travel, mm) $132=50.000 (z max travel, mm)

first problem when i click on + or - to move X or Y and the unit is mm they move 5mm not one

second problem l set soft limit as the above, when i trying to increase X or Y to test soft limits, it "ALARM: Soft limit" when it reach 0, that's mean its not moving at all because 0 is the start point

and when i'm trying to move it in reversed way -Y or -X it movese to 50 and 50 correctly but in the second direction.

i need to set limits in a positive X and X

[FrankBolleri]

Hello all, I have documented a difference between two popular Amazon modules based both on GRBL that seems to me connected with the "second problem" of El-kady:

I can note that 4 Axis have a more recent version of 1.1f (20230316). I also note that the 3 axis, that is more old (20170801), have a clear indication "CUSTOM".

As stated in the last screenhoot... which is the correct behaviour?

And a final question: as far a someone here know, is possible to re-flash the firmware of these Amazon's boards, maybe using Arduino IDE?

Thanks a lot in advance Francesco

[breiler]

@FrankBolleri the difference between these two controllers is that the "4 axis with double Y" firmware was compiled with the option HOMING_FORCE_SET_ORIGIN (https://github.com/gnea/grbl/blob/master/grbl/config.h#L129). It is by default disabled.

This can be seen in the output from the $I command where it is reporting the OPT flag Z. (https://github.com/gnea/grbl/blob/master/grbl/report.c#L370)

[FrankBolleri]

@FrankBolleri the difference between these two controllers is that the "4 axis with double Y" firmware was compiled with the option HOMING_FORCE_SET_ORIGIN (https://github.com/gnea/grbl/blob/master/grbl/config.h#L129). It is by default disabled.

This can be seen in the output from the $I command where it is reporting the OPT flag Z. (https://github.com/gnea/grbl/blob/master/grbl/report.c#L370)

Thanks a lot for the answer.