How to Fix a Sudden Stop During Engraving on Nano Duo

During engraving, a sudden stop can interrupt the workflow and affect the final output quality. On Nano Duo, this issue is typically related to either data communication problems or safety-triggered machine alarms. Understanding the root cause is essential for quickly restoring normal operation.

1. Data Loss or Connection Interruption

When Nano Duo is connected via a data cable, stable communication between the computer and the machine is required throughout the engraving process. If this connection is interrupted, the machine may stop immediately.

Common causes include:

• Loose or improperly connected USB port
• Damaged or low-quality data cable
• Interference in the communication line

If any of these issues occur, the data transmission may be interrupted, causing the engraving process to stop.

To resolve this issue:

• Ensure the data cable is securely connected on both ends
• Replace the cable with a high-quality or new one if necessary
• Avoid moving or disturbing the cable during operation

Using a stable and reliable connection is critical for uninterrupted engraving, especially during long or complex jobs.

2. Machine Alarm Triggered

Nano Duo is equipped with safety protection features that will automatically stop the machine if abnormal movement is detected.

If the machine experiences shaking, tilting, or unexpected motion during engraving, the system will trigger an alarm. When this happens:

• The machine will stop immediately
• The red indicator light will turn on
• The system enters an alarm state to prevent further issues

This is a protective mechanism designed to ensure user safety and prevent damage to the machine or workpiece.

How to Recover from an Alarm

Once the cause of the alarm is removed and the machine is stabilized, engraving can resume normally.

If the alarm does not clear automatically, follow these steps:

Connect the Nano Duo to a computer
Open LightBurn or LaserBurn software
Open the console input window
Enter the command:

$X

Press Enter to send the command and clear the alarm state.

After the alarm is cleared, the machine will return to normal operation and can continue engraving.

Conclusion

A sudden stop during engraving on Nano Duo is usually caused by either a loss of data connection or a machine-triggered alarm due to instability. By ensuring a stable cable connection and maintaining a secure working environment, users can significantly reduce the likelihood of interruptions.

In the event of an alarm, clearing it using the $X command restores normal operation quickly. Proper handling of these situations helps maintain smooth engraving performance and ensures consistent output quality.