Laser Engraver Blogs

Vision Correction Function

Before using the visual function of the frame machine, you must complete a visual alignment process. First, mark the patterns ①②③④ on the engraving target, then take a photo with the camera, and sequentially mark these points on the image in order. Before starting, ensure that no other program is using the frame machine’s camera.

Precautions Before Operation

l Place the engraving paper in the working area. Recommended scale value: 95.

l When performing the visual calibration function, ensure that no other cameras are connected and that the machine’s camera is not in use.

l During visual calibration, do not move the machine or engraving paper, and ensure that all steps are completed in a single session.

l Each marker pattern supports only a single calibration. To perform visual calibration again, you need to engrave a new marker pattern.

l Before performing visual calibration, always reset the machine to prevent it from colliding with the frame during engraving.

l Ensure that the camera lens is perpendicular to the surface of the engraving object to prevent calibration deviations caused by angled views (use a spirit level).

l Adjust the camera to a working distance of 550 mm from the surface of the engraving object to ensure the field of view fully covers the entire machine.

l Ensure the surface of the engraving object is level to prevent calibration deviations caused by unevenness.

l Ensure the bracket is positioned at the center of the machine’s front crossbeam.

Precautions for the Longer B1 Machine

l When using the Longer B1 machine, adjust the canvas size to 430 mm × 430 mm

Modification method:

1. Click on the Serial Log

2. Enter $130=430 and $131=430 separately in the input box. After entering, send $130 and $131 until you see the Canvas update.

Engraving Mark Patterns

You will use your laser to engrave the target pattern on a piece of material and mark the center of the target.

Step 1

After connecting the frame machine, click the camera icon in the menu bar to enter the visual calibration page.

Before entering the visual calibration page, scale and move the canvas aside so that the entire canvas can be fully viewed when the visual function page opens.

Step 2

Enter appropriate speed and power settings to achieve moderate engraving without burning through. Adjust the scale value up or down so that the canvas can accommodate the marker pattern.

Step 3

Click the border preview button to display the marker pattern on the canvas without exceeding the canvas size.

Note: After modifying parameters such as speed, power, or scale, be sure to click the “Border Preview” button again to synchronize the marker pattern on the canvas.

Step 4

Start engraving. If the pattern is not clear enough, you can adjust the settings and run it again. Once the pattern is clearly visible and easy to view, click Next.

Capture Target Mark Image

During this process, you will capture the alignment image. You may need to wait a few seconds on this screen for the camera to successfully capture it.

When the machine’s camera is detected, click the Capture button. You should see the camera view displayed in the lower-left corner of the window, with all four target points visible. The captured image appears on the right, as shown. Click Next once all four target points are clearly visible in the captured image.

Mark the Target

In this step, you need to mark each target by double-clicking the center of each target in sequence.

Hold the spacebar to move the image with the mouse, and use the scroll wheel to zoom in or out to ensure precise clicking on the center. A red marker will appear each time you double-click. If a marker is placed incorrectly, click “Undo Marker” to delete it and try again. Double-clicks must follow the order indicated on the marker pattern (1, 2, 3, 4). Once all four target points are marked, click “Finish” to complete the process.

In the Nano Duo, the metal plate in the middle is designed to be thin to allow the L-shaped support frame to fit tightly against the column. However, the thin metal plate is prone to creasing when subjected to external pressure.
If the metal plate is creased, it can be replaced by following these steps:

1. Rotate the hand-tightening nut counterclockwise to remove the L-shaped support frame.

2. Use a hex wrench to remove the 4 screws shown in the figure and take off the toothed connector.

3. Remove the positioning pieces at the top and bottom of the column and take out the damaged metal plate.

4. Place the new metal plate in position and reinstall the positioning pieces at the top and bottom of the column as shown in the figure.

5. Use the hex wrench to tighten the screws to secure the toothed connector, then reinstall the L-shaped support frame. The metal plate replacement is now complete.

If wavy traces appear during border tracing, this issue is caused by the old firmware. You can resolve it by updating the firmware.

Step-by-step instructions:

1. Download the latest firmware from the official website and save it to the SD card.
Turn on the machine and insert the SD card into the slot on the side of the machine. When an upward arrow and the word “SD” appear on the main interface, it means the file has been successfully read.

2. On the main interface, tap the “Settings” option to enter the settings screen, which includes basic settings such as network, language, etc.

3. Tap the “Firmware update” option to enter the upgrade screen, then tap the upward arrow button to start the component upgrade.

4. “Screen” represents the screen component upgrade, “Galvo” represents the galvo component upgrade, and “Main Control” represents the main control component upgrade. Select the component you want to upgrade to proceed.

Note: When there are no new firmware components on the SD card, the screen will display “Retrieval failed.”

Nano DUO is equipped with a built-in screen that allows for basic operations. The steps to switch between red and blue laser engraving are as follows:

1. Tap File scanning and select the desired engraving file.
Note: Make sure the SD card is inserted into the slot.

2. In Light Source, tap the dropdown menu and select:
450 nm [Blue Laser] or 1064nm [Infrared Laser]

Note: Only files generated by LightBurn and LaserGRBL support red and blue laser switching. Since LaserBurn integrates commands that enable simultaneous dual-laser engraving into the *.gc file, the light source cannot be changed through the screen.

1. LightBurn
After successfully connecting to Nano DUO, enter the following commands in the console input box and press Enter to send:
$nano/led=off 【Turn off LED】
$nano/led=on 【Turn on LED】

2. LaserGRBL
After successfully connecting to Nano DUO, enter the following commands in the console input box and press Enter to send:
$nano/led=off 【Turn off LED】
$nano/led=on 【Turn on LED】

3. LaserBurn PC

On the control page, click Engraving, and you can directly control the LED light using the LED Light button.

As shown in the right image below, click the top menu button, enter the command in the input window, and click Send to send:
$nano/led=off 【Turn off LED】
$nano/led=on 【Turn on LED】

Nano DUO is a high-speed engraving machine, and sometimes engraving lag may occur when the data transmission speed is slower than the engraving speed. To prevent lag, you can apply the following settings:
Note: Engraving via SD card will not experience lag.

1. LightBurn
Click the button in the top menu bar, enable the Enable GCode Clustering option, and click OK.

2. LaserBurn PC
Click the button in the top menu bar to open the Machine Settings interface, enable the Enable GCode Clustering option, and click Save.

During engraving, if the machine suddenly stops, it is mainly caused by the following two reasons:

1. Data Loss
If connected via a data cable, a loose port or a damaged cable may cause the port to disconnect. Please replace the data cable.

2. Machine Alarm
During engraving, if the machine experiences shaking or tilting, an alarm will trigger, the red light will turn on, and engraving will stop. Once the alarm is cleared, engraving can resume normally.
If the alarm does not automatically clear, connect the machine to a computer, open LightBurn or LaserBurn software, and enter $X in the console to clear the alarm.

Troubleshooting:

1. Network
Check whether the Nano Duo and the computer are on the same network. If they are not on the same network, IP connection will not be possible. Network settings can be configured via the machine’s screen or the mobile app.

2. Machine Occupancy
Check whether the Nano Duo is already connected via IP to another device or software. The Nano Duo only supports one device/software connected via IP at a time.