Y axis moving 4 times too much compared to X axis

X-Carve Troubleshooting
1

Not getting the proper help I need from Inventables so I thought I’d try here.

Just getting started. When I try a sample cut (no bit installed) the job
is elongated (exactly) 4 times in the Y travel. Also when I jog it manually
through easel it will move (when set to 1 inch) properly on the X and Z
but it moves exactly 4 inches in the Y travel. Any ideas?

My guess… I think it must be in the coding somehow – where Y should move only 1 inch, instead moves 4 inches – any setting somewhere for this?.

As it sits…
All V wheels are torqued as suggested. Belts have even tension (3.5lbs per one inch lift at center of belt). Heat shrink added – so no slipping.
Axis pots have been adjusted to avoid dropout (too low) and thermal overload (too high). The boards are seated well and have good contact – all lights are working as they should on the boards as well.
I am running Windows 7pro.
Easel Local 2.2 - suggested for win 7 - fixed connection issues (so far)

Any help appreciated.

Doug

2

Do you know how to use the Easel Machine Inspector to look at the grbl parameters ($$ output from grbl)?

If so, post the parameters here:

3

Will do shortly.

4

$0=10 (step pulse, usec)
$1=255 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=3 (dir port invert mask:00000011)
$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=0.020 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$20=0 (soft limits, bool)
$21=0 (hard limits, bool)
$22=1 (homing cycle, bool)
$23=3 (homing dir invert mask:00000011)
$24=25.000 (homing feed, mm/min)
$25=750.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$100=40.000 (x, step/mm)
$101=40.000 (y, step/mm)
$102=188.976 (z, step/mm)
$110=8000.000 (x max rate, mm/min)
$111=8000.000 (y max rate, mm/min)
$112=500.000 (z max rate, mm/min)
$120=500.000 (x accel, mm/sec^2)
$121=500.000 (y accel, mm/sec^2)
$122=50.000 (z accel, mm/sec^2)
$130=790.000 (x max travel, mm)
$131=790.000 (y max travel, mm)
$132=100.000 (z max travel, mm)

5

The parameters look good.

Do you have any jumpers installed on the gShield? Should be one on the Z axis. X and Y should not have any jumpers installed.

6

Funny, I just checked that after digging in another thread. Only jumper I have is on the Z.

7

Here is an example output of what is supposed to be a perfect 2" circle. (used dry erase marker on styrene)

IMG_20160209_025331.jpg1088×1920 563 KB

8

@DougPhillips

Try swapping the X and Y axis wires at the gShield (with power off, turn off the 24 volt supply and then unplug the USB cable). See if the problem moves to the X axis and if the Y axis now works correctly.

9

Yup, that moved the problem to the X axis. Any ideas?

10

@DougPhillips
Yep, sorry to say - you have a bad gShield.

11

Are these under warranty?

12

I suppose it depends on when you got your X-carve, but get in touch with Inventables. They have been really good about replacing defective components.

13

I’ll get in touch with them.

Thanks for the help, I was really going nuts over this.

1 Like
14

They sent out a new board next day air, had it in 15 minutes after it arrived, and I now have a working x carve! Thanks for the help!

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