gCode Failure - Please Help

I was trying to cut a project that starts with pockets. I used makercam.com to create the Gcode. While running the process the sled was supposed to travel to the right (as i followed the steps through on ground control ) but it veered to the left, all the way left, until it was hanging from the left motor, below the cross beam of the frame. The first time, i got it back to home by pressing the home button and started over. Same problem, except I could not get it to return home. the motors were making sounds but not moving. I hit stop and then home again. still no movement. I went into test motors and they all moved. I clicked on home again and it started to move and then stopped and I got a message that I needed to recalibrate.

I was taking some video as it happened and I noticed that proceeding the veering off to the left, in the Gcode areas it said:

Command G40 unsupported and ignored

This is my first experience with using Pockets in Makercam.com. I have only been cutting thing out.

Also the heat sinks are really hot, do I need to add a fan?

Thank you,
Zachariah

My initial thought would have been that somehow the motor leads got reversed, when I first set up my machine i did that and got some very unpredictable results. However, you said that you’ve already cut parts so that’s probably not the case. Might have something to do with G2/G3 arcs? It’s hard to diagnose without being able to see the program. Could you upload it so we can take a look?

G40 is for no tool compensation, so MakerCAM is handling the tool compensation as is writes the code. Ground Control should just ignore the G40 command. In the name of troubleshooting, you could try deleting G40 from the program header.

Also, your board would get pretty hot if it’s doing as you described. May not be necessary to add a fan as this is outside the normal operation of the machine, but it couldn’t hurt to add one. I have a 80mm computer case fan that I crimped to a 12v power supply that’s pointed right at my heat sinks, and they’ve always felt cool to the touch. I haven’t really pushed my machine yet, so that could be part of the reason why it’s running so cool.

This may help, on the wiki there is a list of the G-Codes supported by Ground Control
Supported G-Codes

If you want full list, this is the Wikipedia page on G-Codes (many of these are not supported by GC, this is only for reference):
Wikipedia G-Code List

1 Like

Which versions of GroundControl and Firmware are you using? There were some strange issues several releases ago which have been addressed and are thought to have been corrected.

2 Likes

Ground control v0.80.

MM - why would this be outside the normal operation, why would it be different than cutting a hole? (I am not trying to be a smart alec, I am genuinely curious)

As soon as I can figure out how to upload my program I will. Everything seems to go haywire at step 343.

Thank you for the help.

(Generated by PartKam Version 0.05)

G20 G90 G40

(pocket 1)
G0 Z0.25
T0 M6
G17
M3
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G1 Z-0.1 F30
G2 X11.101 Y1.6307 I0.0361 J0.0793 F55
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G2 X11.0898 Y1.6387 I0.0042 J0.0055
G2 X11.0923 Y1.6336 I-0.014 J-0.0101
G2 X11.0927 Y1.6321 I-0.0335 J-0.01
G1 X11.0928 Y1.632
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G0 Z0.25
G0 X15.0414 Y-1.705
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G3 X16.0457 Y-1.3457 I-8.3004 J23.0174
G3 X16.244 Y-1.2679 I-2.9137 J7.717
G3 X16.4366 Y-1.1838 I-1.6044 J3.9383
G3 X16.5215 Y-1.1376 I-0.3281 J0.7037
G2 X16.542 Y-1.1268 I0.0833 J-0.1326
G2 X16.6574 Y-1.0795 I1.0537 J-2.4093
G2 X16.7769 Y-1.0359 I1.52 J-3.9798
G2 X16.9092 Y-0.9919 I1.677 J-4.8175
G3 X17.0472 Y-0.9466 I-2.2793 J7.1736
G3 X17.1589 Y-0.9072 I-1.5911 J4.6918
G3 X17.2119 Y-0.8873 I-1.1263 J3.0774
G3 X17.2474 Y-0.8731 I-0.5075 J1.3157
G3 X17.2866 Y-0.8554 I-0.2907 J0.6968
G3 X17.3135 Y-0.8391 I-0.0754 J0.1553
G2 X17.3764 Y-0.8123 I0.525 J-1.1456
G2 X17.4472 Y-0.7858 I0.8382 J-2.1266
G2 X17.5315 Y-0.7571 I1.0515 J-2.9501
G3 X17.6233 Y-0.7254 I-0.83 J2.5563
G3 X17.7137 Y-0.6905 I-0.9168 J2.5107
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G2 X17.9991 Y-0.5655 I0.4919 J-1.2922
G2 X18.0609 Y-0.5474 I0.3597 J-1.1122
G3 X18.1412 Y-0.5215 I-0.1993 J0.7562
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G3 X25.6545 Y-0.6023 I0.147 J0
G3 X25.6758 Y-0.6442 I0.3809 J0.1672
G3 X25.6978 Y-0.6793 I0.5495 J0.3195
G3 X25.7245 Y-0.7167 I0.6841 J0.4598
G2 X25.7284 Y-0.7235 I-0.0257 J-0.0194
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G2 X25.7543 Y-0.8191 I-0.4191 J-0.1116
G2 X25.7575 Y-0.8612 I-0.3133 J-0.0447
G3 X25.7618 Y-0.9329 I0.6887 J0.0058
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G3 X25.7825 Y-1.0303 I0.4032 J0.0966
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G3 X25.8153 Y-1.0955 I0.1904 J0.0883
G3 X25.8231 Y-1.1053 I0.1195 J0.0879
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G3 X25.5511 Y-2.4838 I0.1274 J-0.1256
G3 X25.5341 Y-2.5393 I0.2064 J-0.0935
G3 X25.5299 Y-2.5843 I0.3013 J-0.0513
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obviously not the whole thing. if there is a way to upload the file please let me know.

You certainly need to update to the current versions :wink:. It’s at version 0.92, much has changed and improved!

Pocket operations are within the realm of normal operation. I was saying that the problem you’re experiencing, where the sled is moving to the upper leftmost portion of the bed, is a little extreme for it’s normal use. All the force needed to pull the sled to that position is what is heating up the motor shield.

There is an icon at the top of the reply box:

image

I would update Ground Control and the Maslow’s firmware to the most recent versions first, as @blurfl suggested. If you’re still having trouble I can test out the program on my machine tonight and see what I can come up with :wink:

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DrPod.nc (1.3 MB)

Thank you.

And to clarify, it was hanging at the bottom.

I have downloaded the latest groundcontrol, and firmware. I will, if I get a chance today, update the firmware, and see what happens.

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:point_up_2:This will hopefully solve the initial problem as there has been some “bugs”.

Checking the gcode with a number of online viewers (a few refused to render 36390 lines correct), it looks as if it is cutable. However, first, as a general workflow I would suggest to clean up the image before creating the gcode. https://www.youtube.com/watch?v=UURMxR8r0to
The thousands of tiny arcs creating a simple line not only stress the cam software but also the processor running the cut.
Not sure if the motorshield is affected by all this little moves.
Second, if you look at your file with https://nraynaud.github.io/webgcode/ you can see all the rapid travels in red, going all over the place.


A lot of time wasted with the sled moving without cutting.
Makercam does not seem to have the option to reduce the amounts of rapid moves, but in bCNC for example, you can drag parts of your gcode around to optimize the travels.
Not sure why you have chosen ‘pocket’ rather then ‘follow path’.

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