Hello, I’m new to CNCs, but I’d like to start building one or rather improve one. I bought a new generic card, a GRBL card, but when I run the $I command in lasergbrl the following appears:Monport
[VER:1.1f.20230316:����������������������������������������������������������������]
[OPT:VMZHL,35,254]
Target buffer size found Is that normal? If you could clarify this doubt for me, you would help me a lot. I asked an AI and she told me it was wrong. I already installed CH341SER (1). EXE and I already know that COM4 is from my card. I just want to clarify this doubt.
Hi Saul,
The $I command queries the firmware (Build info) on your controller.
→ It’s running GRBL version 1.1f.
→ [OPT:VMZHL,35,254] are the firmware’s build options.
It appears to send a bunch of unreadable characters along with it. - Which terminal are you using? You can try if lowering the baud-rate helps with the encoding.
Which controller are you using and what are you trying to do with it?
- If it says “Monport”, which is a laser manfacturer brand, it is not a generic card.
- If you can read the text, the baud rate is likely correct.
- That string of unknowns indicates it could be a Monport reject and being sold as generic. I suspect somebody bought a bunch at 2 cents on the dollar and trying to make a profit.
Hello, I already lowered the baud rate and the characters ??? still appear, the controller is A4988, and what I’m trying to do is change the GBRL board of an Ortur Master 2 Pro, because the other one was damaged and I wanted to add a servo motor for the Z.
As Mike pointed out, if you can read the other text, the baud-rate is likely correct and you won’t see more info from the $I command.
The A4988 are only the motor drivers. Which “GRBL board” are you using?
I’m using this one, I’ll leave the purchase link.
https://es.aliexpress.com/i/1005005392787420.html
Or could you recommend a GBRL board to replace the one that no longer works for me, but if I want to add the servo motor and the Z axis, if you could recommend one that you have already tested, I would greatly appreciate it.
Is there anything wrong with the one you have other than the ����� on the status report?
You will need to change the GRBL values to match your LM 2 Pro. Grbl v1.1 Configuration · gnea/grbl Wiki · GitHub
What was damaged on your original controller? If it still connects to LightBurn, you can try the following:
- Connect the old controller (only the USB and power)
- Go to “Edit > Machine Settings” and click “Save to file”
- Connect the new controller and select the correct COM port.
- Select “Load from File” in the previous window and click on “Write”
Good Luck!
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