Waiting for connection... ���JB�!�

Can anybody help me understand what is the reason for this malfunction
and why can’t I connect the machine to lightburn
even though I connect it using the same cable to Laser GRBL program and control it without trouble

This is likely an issue with the baud rate setting in Edit->Device Settings. Match what this is set to in LaserGRBL.

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Thank you it worked

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