UNO Board not recognized

[n8]

Hello All,

I have been running my Carve King since October and have had great success until this past weekend.  I was about to run another program on a table top I am milling and noticed that the left and right motors were not turning at the same rate.  I verified that all nuts, bolts and screws were okay and they were.  I moved on to the CNC Shield unit and switched the A and Y hookups and this switched the issue from the right to the left motor.  I then proceeded to verify the voltage of each of the jumpers and ensured they were all at .65V. However, when I plugged everything back in, powered the unit up and connected the USB, I get a message that Windows doesn't recognize the device.  Has anyone had this issue?  I'm on a deadline for these tables and need some support ASAP.  I have an additional UNO board, but don't know where to find the code, or if I could switch it out.  PLEASE HELP!!

Thanks,
Nate Osborne

[notso]

If it comes up unrecognized, change USB ports. (Easiest answer)
You can go into device manager and remove the device and let it re-discover it as well but a little more difficult than just moving ports.

(If it uses GRBL then just google GRBL and you can find the website for the latest version, but you need the hes file which is around here somewhere)


This method resolves issues where the currently loaded USB driver has become unstable or corrupt.

Select Start, type Device Manager in the Search box

Select Device Manager from the returned list.

Select Disk Drives from the list of hardware

Press and hold (or right-click) the USB external hard drive with the issue, and select Uninstall.

After the hard drive is uninstalled, unplug the USB cable.

Wait for 1 minute and then reconnect the USB cable. The driver should automatically load


Thread for carveking Hex

millrightcnc.proboards.com/thread/1068/hex-code-carve-king

Grbl 1.1
github.com/gnea/grbl/releases

[n8]

Still giving me the same issues after trying that multiple times. I am going to grab my other Arduino and see if that is recognized to see if I can isolate it to the Carve King board. Thank you for the quick response! Still need help though.

[notso]

Well I did provide you with the link to GRBL and the hex file you need for that other arduino you have.....
Did you try another PC to see if it is the board or the USB ?

[n8]

Thank you notso! I tried my other Arduino and that is recognized. Just need to load those files onto the Arduino. Thank you!!!

[n8]

Any idea on how I load the .hex file into the Arduino? I've put that into the folder where the previous one's are like the forum I looked up said, vut not getting the results I was expecting.

[Derek the Admin]

Good advice from Notso!

You can put a hex file onto the board using Xloader. You can find a link to it in our resources page.

Let us know if it works for you.

[notso]

Like Derek said, but here is the link to the resources
www.millrightcnc.com/resources

[n8]

So I've loaded the .hex files into the Arduino and re-attached everything. I re-verified the voltages to be at 0.65 and plugged everything back in. I am still getting different movements between the two Y motors. Any ideas?

[Bruce]

I would check the default Grbl settings for the MillRight CNC Carve King listed in the last page of the assembly manual.

Also check the set screws on the motor coupler and tighten if loose. Also, the voltage should be checked on the stepper motor driver to ensure that it is around 0.65 volts.
Check the troubleshooting section of the Carve King assembly manual.

[Derek the Admin]

It’s good that they both move. Like Rogers mentioned it should be confirmed that there is no coupler slippage. I’d also make sure that it doesn’t move to the opposite side if you move the stepper driver. Could just be a defective driver.

[n8]

That was going to be my step today was to replace the stepper motor board and see how that works.

[n8]

I have replaced the CNC shield and uploaded the hex files onto a different Arduino. I have congruent movement between the Y motors now, but they are turning far too fast. I have verified the voltage of the stepper motors to be .65V. I have tried both .hex files and the GRBL 1.1 gives an alarm state when trying to send anything to the machine. Starting to get a bit frustrated.

[n8]

This is what I get with $$ command:

>>> $$
$0=10
$1=255
$2=0
$3=0
$4=0
$5=0
$6=0
$10=1
$11=0.010
$12=0.002
$13=0
$20=0
$21=0
$22=1
$23=0
$24=35.000
$25=1200.000
$26=94
$27=4.000
$30=12000
$31=0
$32=0
$100=200.000
$101=200.000
$102=200.000
$110=3500.000
$111=4400.000
$112=3000.000
$120=240.000
$121=240.000
$122=240.000
$130=432.000
$131=432.000
$132=95.000

[notso]

If they are turning too fast and you said you replaced the shield...do you have the jumpers in the right spots? or did you forget to move those over?