GRBLDuino - Troubleshooting Steps?

Use, set up, assembly help, and any other GRBLDuino related questions or comments.
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brindoro
Posts: 5
Joined: Sun Aug 15, 2021 4:49 am

GRBLDuino - Troubleshooting Steps?

#1

Post by brindoro »

Hi,

Need to run a 5 stepper cnc, dual x, dual y, and z axis setup. Also need limit sw of at least 5 home positions. Familiar with 3d printers, had DRV8825s, A49988and a genuine Arduino 2560 Mega, 12v and 24v PS, what could be simpler than adding a GRBLDuino Mega v1 and away I go?

Bought the kit, soldered it up, the USB case is separated from underside of shield with M/F spacers, setup the vrefs conservatively, (0.5 to 0.75). Have verified the colours of coils with DVM, should only be dealing with direction of rotation issues. I have not attached anything but power to the shield, no other wires. Tried both 12V and 24V power as well.

Loaded up the 1.1e hex file recommended here. (http://blog.eccentricworkshop.com/tag/grblduino/ and attach id 612) I can talk to the Arduino just fine with UGS, but whether by setup or the jog menu, I get no response at all, the steppers do not seem to power up when out of idle. Setup wizard of UGS should do the trick. But there is a "configuration file" part of the wizard that I have not touched. Can someone tell me if I need GRBLDuino specific entries in the configuration file?

Also note, I have tried the jumper settings as ABC independent, and XA, YB, Z and C independent, and zero config jumpers. I have tried with 5/6 DRV8825, or just 1 in X. Also tried some A4988s as well. Mixed them too. Always making sure the enable pin is in the correct location.

As part of experimenting, decided to try a 6 axis mega hex here (fill this in later...). Now the steppers make a small clunk, but are locked when not in idle and will not turn. Out of idle they spin.

Any suggestions appreciated. Can put photos up later.

Thanks.

Brian.
brindoro
Posts: 5
Joined: Sun Aug 15, 2021 4:49 am

Re: GRBLDuino - Troubleshooting Steps?

#2

Post by brindoro »

Here are some photos.

- jumpers with independent ABC, steppers plugged in, red/blue and green/black are coils, power, half stepping with full on z.
- spacers to keep usb case off of circuit board
- left underside, solder paste was cleaned away and I have looked for cross connections between components
- right underside
- four times the screw terminals
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brindoro
Posts: 5
Joined: Sun Aug 15, 2021 4:49 am

Re: GRBLDuino - Troubleshooting Steps?

#3

Post by brindoro »

the other photos
brindoro
Posts: 5
Joined: Sun Aug 15, 2021 4:49 am

Re: GRBLDuino - Troubleshooting Steps?

#4

Post by brindoro »

trying again
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brindoro
Posts: 5
Joined: Sun Aug 15, 2021 4:49 am

Re: GRBLDuino - Troubleshooting Steps?

#5

Post by brindoro »

last two
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