Properly positioning your engraving design is essential to ensure it fits within the machine’s working area and avoids boundary errors. In LaserGRBL, you can adjust the graphic position by modifying the X and Y offsets before starting the engraving process.

This guide explains how to correctly place your design within the working area of the Ray5 MiniS.

Table of Contents

• What This Guide Covers
• Why Graphic Positioning Matters
• Before You Start
• Requirements
• Precautions
• Step-by-Step Tutorial
• Ray5 MiniS Working Area Reference
• Common Problems and Solutions
• Tips for Better Results
• Frequently Asked Questions
• Conclusion

What This Guide Covers

This tutorial explains how to:

• Adjust graphic position in LaserGRBL
• Modify X and Y offsets
• Keep designs within the engraving area
• Avoid boundary and positioning errors
• Understand the working area limitations of Ray5 Mini and Ray5 MiniS models

Quick Answer

To adjust graphic position in LaserGRBL:

1. Open the engraving file in LaserGRBL
2. Modify the X and Y offsets in the target image window
3. Ensure the graphic stays within the machine’s working area
4. Preview the placement before engraving

Correct positioning helps prevent engraving failures and improves engraving accuracy.

Why Graphic Positioning Matters

Graphic positioning is a critical part of laser engraving preparation. If the design exceeds the machine’s working area, the engraving process may fail or produce inaccurate results.

Correctly adjusting the X and Y offsets helps:

• Prevent boundary errors
• Keep the design within the engraving area
• Improve engraving precision
• Reduce material waste
• Ensure consistent results

For beginners, understanding how LaserGRBL handles graphic positioning is essential for successful engraving projects.

Before You Start

Before adjusting the graphic position in LaserGRBL, make sure your machine and software are ready.

Requirements

You will need:

• Ray5 Mini or Ray5 MiniS laser engraver
• Computer with LaserGRBL installed
• USB connection to the machine
• Engraving file or image
• Material placed securely on the work surface

Follow official machine specifications or instructions.

Precautions

Before operating the laser engraver, follow these safety precautions:

• Wear appropriate laser safety glasses
• Ensure proper ventilation
• Keep flammable materials away from the machine
• Confirm the engraving material is secured
• Verify the machine is operating normally before starting

Incorrect positioning may cause the laser to move outside the valid engraving area.

Step-by-Step Tutorial

Step 1: Open the Engraving File

Action

Click File > Open File to add the design to be engraved.

Expected Result

The selected design appears in the LaserGRBL workspace and target image window.

Important Notes

• Confirm the file imports correctly before continuing.
• Check the design dimensions to ensure they are appropriate for the machine’s working area.

Step 2: Adjust the X and Y Offsets

Action

Adjust the offset of X and Y in the target image window to change the position of the graphics.

Expected Result

The graphic position changes within the workspace according to the selected offset values.

Important Notes

• Adjust the offsets carefully to avoid exceeding the working area.
• Small offset changes can significantly affect final placement.
• Position the design fully within the valid engraving range.

Step 3: Make Sure the Design Is Within the Working Area

Action

Check the design placement and make sure it is in the range of the working area.

Expected Result

The entire design fits within the available engraving area of the selected machine model.

Important Notes

• Designs outside the working area may trigger boundary errors.
• Always verify placement before starting engraving.
• Use preview and positioning checks whenever possible.

 

 

 

 

 

 

 

 

 

 

Ray5 MiniS Working Area Reference

Use the following working area specifications when positioning graphics in LaserGRBL.

 

 

Common Problems and Solutions

Problem	Possible Cause	Solution
Boundary error during engraving	Graphic exceeds working area	Reduce offsets or reposition the design
Design partially engraves	Incorrect graphic placement	Confirm the design fits within the workspace
Graphic appears off-center	X or Y offset set incorrectly	Readjust the X and Y offsets
Laser head moves outside expected range	Improper positioning setup	Recheck the target image window settings
Engraving starts in the wrong location	Incorrect design alignment	Verify placement before starting
Graphic does not fit material	Design size too large	Resize the graphic within the allowed area
Preview does not match expected location	Incorrect offset values	Reset and adjust offsets carefully

Tips for Better Results

Check the Working Area Before Importing Files

Knowing the maximum engraving dimensions helps avoid positioning errors.

Use Small Offset Adjustments

Minor offset changes provide more accurate positioning control.

Preview the Design Placement

Always verify the engraving area before starting the laser job.

Keep the Material Properly Aligned

Straight material placement improves engraving consistency.

Test Positioning on Scrap Material

Testing placement first can help prevent wasted materials and failed engravings.

Avoid Positioning Too Close to Edges

Leaving some margin space can reduce alignment issues during operation.

Frequently Asked Questions

What are X and Y offsets in LaserGRBL?

X and Y offsets control the horizontal and vertical position of the engraving graphic within the workspace.

Why do I get a boundary error in LaserGRBL?

Boundary errors usually occur when part of the design exceeds the machine’s working area.

How do I know if my design fits the working area?

Compare the design dimensions with the machine’s maximum working area listed in the specifications table.

Can I reposition the graphic after importing the file?

Yes. You can modify the X and Y offsets in the target image window before engraving.

Why is my engraving not centered on the material?

The X and Y offsets may not be adjusted correctly, or the material may not be aligned properly.

What happens if the design exceeds the working area?

The machine may generate a boundary error or fail to engrave correctly.

Should I preview the engraving position before starting?

Yes. Previewing helps confirm the design fits within the valid engraving range.

Conclusion

Adjusting the graphic position in LaserGRBL is a simple but essential step to ensure accurate engraving results. By properly setting X and Y offsets and keeping your design within the working area, you can avoid errors and achieve precise, high-quality outputs.

Consistent use of preview and positioning checks will help improve engraving efficiency and reduce failed jobs.

Connection issues between your computer and the Ray5 MiniS can prevent proper control of the machine and interrupt engraving tasks. These issues are usually related to drivers, port conflicts, baud rate settings, or incorrect software configuration rather than hardware failure.

This guide provides a structured troubleshooting process to help you quickly restore a stable connection using LightBurn or LaserGRBL.

1) Can't find CH340 driver

For Windows systems, it needs to right-click the computer and select Manage, click Device Manager, click to expand Ports (COM & LPT), find the port corresponding to the CH340 driver, and then select this port in LightBurn or LaserGRBL.

For MacOS, please go to About this Mac > Overview > System Report, select USB under Hardware (there will be USB Serial if the driver is installed automatically), and select the cu.wchusbserial14230 port in LightBurn or LaserGRBL.

If no ports are listed in the expanded Ports (COM & LPT), it means that no engravers were found, which could mean that it is not plugged in correctly, isn't powered, or the PC is missing a driver. It needs to download the CH340 driver from the link and double-click it to install:

https://drive.google.com/drive/folders/1Sc-TKuez-mz--38Vp6DeL-pGmQcQdHW4.

How to install CH340 driver of LightBurn for MacOS Sequoia system:

https://www.youtube.com/watch?v=JX-XsjLFei0

How to install CH340 driver of LightBurn for MacOS system:

https://www.youtube.com/watch?v=FBd1uEA9QUw

2) CH340 driver port is occupied

Before connecting, please make sure that the CH340 port is not occupied by software such as serial communication tools, cura, etc.

3) The Baud rate setting error

The baud rate should be set to 115200. The wrong baud rate will cause the connection to the engraving machine to fail.  

4) The configuration file is not imported or damaged

For LightBurn, click "Devices" in the laser control module to import the engraver. Click ‘Import,’ select the RAY5 mini.lbdev file, and click OK to add the RAY5 mini configuration to LightBurn. The macro commands will be successfully added in the Console window, and RAY5 mini device will appear in the list of devices to the right of the 'Devices' button in the Laser window when the configuration file is imported successfully.

Conclusion

Most connection issues with the Ray5 MiniS are caused by driver installation problems, incorrect port selection, or improper software settings. By verifying the CH340 driver, ensuring the correct COM port, setting the baud rate to 115200, and importing the correct configuration file, you can quickly restore stable communication between your computer and the engraving machine.

Maintaining proper connection setup ensures reliable control and smooth engraving performance.

The CH340/CH341 USB driver is essential for communication between your computer and devices like the Ray5 MiniS. If the driver fails to install or work properly, your machine may not be recognized by software such as LightBurn or LaserGRBL.

This guide provides a complete troubleshooting process for both Windows and macOS systems.

I. Windows Systems

1. Common Causes & Solutions

① System Compatibility Issues

• Windows 10/11 usually includes built-in drivers, but auto-install may fail

✅ Solution:

• Manually download the latest driver from the official site:
  • http://www.wch.cn
• Install file: CH341SER.EXE

② Old Driver Conflicts

• Previously installed drivers may block new installations

✅ Solution:

• Open Device Manager → View → Show Hidden Devices
• Expand Ports (COM & LPT)
• Uninstall all CH340/CH341 devices
• ✔ Check “Delete the driver software for this device”
• Reinstall the latest driver

③ Driver Signature Issues (Win7 / Some Win10)

• Windows may block unsigned drivers

✅ Solution:

• Restart → Advanced Startup
• Select Disable Driver Signature Enforcement
• Install the driver again

④ Insufficient Permissions

• Installation requires admin rights

✅ Solution:

• Right-click installer → Run as Administrator

⑤ USB Cable / Port Issues

• Charging-only cables cannot transmit data

✅ Solution:

• Use a data-capable USB cable
• Prefer USB 2.0 ports
• Avoid hubs when possible

2. Confirm Successful Installation

• Plug in the device
• Open Device Manager → Ports (COM & LPT)

✔ Successful:

• USB-SERIAL CH340 (COM3) appears

❌ Failed:

• Yellow warning icon → reinstall or resolve conflicts

3. Alternative Solutions

• Try another computer to rule out system issues
• Use a USB-to-serial adapter (better compatibility):
  • FT232 USB-to-Serial Adapter
  • CP2102 USB-to-Serial Adapter

II. macOS Systems

1. Check if Driver Is Needed

• macOS 10.13+ may auto-detect CH340

Check via Terminal:

✔ If you see:
/dev/tty.wchusbserialxxxx → Driver is already working

2. If Not Recognized → Install Driver

① Download Driver

• Official: https://www.wch.cn/downloads/CH341SER_MAC_ZIP.html
• Recommended (better compatibility):
  • https://github.com/adrianmihalko/ch340g-ch34g-ch34x-mac-os-x-driver

② Allow System Extension

• macOS may block installation

✅ Solution:

• Go to System Settings → Security & Privacy → General
• Click Allow for WCH Electronics Co., Ltd.

③ Restart the Computer

• Required to load the driver properly

3. macOS Troubleshooting

① Driver Installed but No Port

• Run:

• Replug device and check for new port

② Apple Silicon (M1/M2/M3 Macs)

• Official drivers may not be fully compatible

✅ Solution:

• Use the open-source GitHub driver (recommended)

③ Permission Issues (Big Sur / Monterey / Ventura)

• macOS restricts third-party drivers

✅ Advanced Solution:

• Boot into Recovery Mode
• Temporarily disable System Integrity Protection (SIP)
• Install driver, then re-enable SIP

III. Alternative Solutions

If CH340 issues persist:

• Use a native-supported adapter:
  • FTDI USB-to-Serial Adapter (best macOS compatibility)
• Or:
  • Use Wi-Fi connection (if your controller supports it)

Important Notes

• Always use a data USB cable, not charging-only one
• Restart your system after installing drivers
• Ensure only one software accesses the COM port at a time
• Keep drivers updated for stability

Conclusion

CH340 driver installation issues are typically caused by system compatibility, driver conflicts, permission restrictions, or hardware connection problems. By systematically checking drivers, ports, cables, and permissions, most connection issues can be resolved quickly.

For long-term stability—especially on macOS—consider using alternative USB-to-serial adapters with native support.

Wi-Fi connection issues on the Ray5 MiniS can prevent wireless control through software such as LightBurn or LaserGRBL. These problems are typically caused by signal strength, network compatibility, or incorrect configuration.

This guide helps you quickly identify and resolve the most common Wi-Fi connection issues.

1. Weak Wi-Fi Signal

In LightBurn or LaserGRBL, enter $wifi/listAPs in the console to search for available Wi-Fi networks.
In the list of detected Wi-Fi networks, the number shown after SIGNAL represents signal strength, with 100 being the strongest.

If the signal is too weak, the connection may fail.
Possible causes and solutions:

The Wi-Fi antenna on the motherboard may be loose. In this case, remove the front beam cover of the RAY5 mini and reconnect the antenna securely.

The antenna may be damaged. If so, replace the antenna with a new one.

2. Wi-Fi Frequency Band Is 5 GHz Instead of 2.4 GHz

The Longer laser engraver can only detect 2.4 GHz Wi-Fi networks.
If your Wi-Fi is using the 5 GHz band, the machine will not be able to find or connect to it.

3. Incorrect Wi-Fi Name or Password

Check carefully to ensure that the Wi-Fi name (SSID) and password are entered correctly.

video tutorial:

Conclusion

Wi-Fi connection failures on the Ray5 MiniS are usually caused by weak signals, unsupported 5 GHz networks, or incorrect credentials. By checking signal strength, ensuring a 2.4 GHz connection, and verifying network details, most issues can be resolved quickly.

A stable Wi-Fi connection enables convenient wireless control and improves workflow efficiency.

Keeping your firmware updated is important for maintaining stable performance, improving compatibility, and fixing known issues on the LONGER Ray5 mini and Ray5 miniS laser engravers.

Table of Contents

• What This Guide Covers
• Quick Answer
• Why This Process Matters
• Before You Start
• Requirements
• Precautions
• Step-by-Step Tutorial
  • Method 1: Update by ESPTool Web
  • Method 2: Update by LaserBurn APP
• Common Problems and Solutions
• Tips for Better Results
• Frequently Asked Questions
• Final Thoughts

What This Guide Covers

This tutorial explains how to officially update the firmware on the following laser engravers:

• LONGER Ray5 mini
• LONGER Ray5 miniS

The guide includes two official update methods:

1. Updating firmware through ESPTool Web
2. Updating firmware through the LaserBurn APP

It also includes troubleshooting advice and beginner tips to help reduce firmware update issues.

Quick Answer

To update the firmware on a Ray5 mini or Ray5 miniS:

1. Download the correct firmware for your machine model.
2. Connect the engraver to your computer.
3. Use either:
   • ESPTool Web in a browser, or
   • LaserBurn APP firmware update function.
4. Follow the official flashing procedure carefully.

For ESPTool Web:

• Set baud rate to 115200
• Connect to the CH340 serial port
• Click Erase Flash
• Set Flash address to 0x0
• Select firmware file
• Click Program

For LaserBurn APP:

• Open Me → About → Firmware Update → RAY5 mini

 

Why This Process Matters

Firmware controls how your laser engraver operates. Updating the firmware can help:

• Improve machine stability
• Fix connection issues
• Improve compatibility with software
• Resolve operational bugs
• Restore functionality after firmware corruption
• Improve Wi-Fi or USB communication

In some cases, outdated firmware may cause:

• Freezing during startup
• Connection failures in LightBurn
• Unexpected reboots
• “Busy/Paused” communication errors

Updating firmware correctly can often solve these problems.

Before You Start

Before beginning the firmware update process:

• Ensure the engraver has stable power
• Use a reliable USB data cable
• Close unnecessary software programs
• Download the correct firmware for your exact machine model
• Do not disconnect power during the update

If you are unsure which firmware file matches your machine:

Follow official machine specifications or instructions.

Requirements

You will need:

• LONGER Ray5 mini or Ray5 miniS
• Computer with USB connection
• Internet connection
• Firmware file for your machine
• Browser for ESPTool Web method
• LaserBurn APP (for APP update method)

You may also need:

• CH340 driver installed on your computer
• USB Type-C cable

Official firmware downloads are available on the LONGER download pages.

Precautions

Before updating firmware, read these important precautions carefully.

Use the Correct Firmware

Different Ray5 mini and miniS models use different firmware versions.

Examples include:

• Ray5 miniS_2.5w-v0.5.0
• Ray5 miniS_3.5w-v0.5.0
• Ray5 miniS_5.5w-v0.5.0
• Ray5 miniS_10w-v0.5.0

Installing incorrect firmware may cause startup problems or connection failures.

Do Not Disconnect During Flashing

Interrupting power or USB connection during firmware flashing may corrupt the firmware installation.

Confirm CH340 Driver Installation

If the computer cannot detect the engraver:

• Check whether the CH340 driver is installed
• Verify the correct COM port appears in Device Manager

 

Step-by-Step Tutorial

Method 1: Update by ESPTool Web

This is the official browser-based firmware flashing method provided by LONGER.

Step 1: Open ESPTool Web

Action

Open the following webpage in your browser:

ESPTool Web

Expected Result

The ESPTool Web interface opens and allows serial port connection.

Important Notes

• Use a compatible browser
• Connect the engraver to the computer before continuing

Step 2: Connect to the CH340 Serial Port

Action

• Set the baud rate to 115200
• Connect to the CH340 serial port

Expected Result

The software establishes communication with the laser engraver.

Important Notes

If the CH340 serial port does not appear:

• Check USB cable connection
• Verify CH340 driver installation

Step 3: Erase Flash

Action

Click:

Erase Flash

Expected Result

Existing firmware data is erased from the machine.

Important Notes

The official instructions specify erasing flash before programming the new firmware.

 

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Step 4: Enter Flash Address

Action

Enter the Flash address:

0x0

Expected Result

The firmware target address is configured correctly.

Important Notes

Do not change the Flash address value.

 

---

Step 5: Select Firmware File

Action

Choose the firmware file for your specific Ray5 mini or miniS model.

Expected Result

The firmware file is loaded into ESPTool Web.

Important Notes

Use only firmware intended for your machine version.

Step 6: Program the Firmware

Action

Click:

Program

Expected Result

The firmware flashing process begins.

Important Notes

• Do not disconnect power
• Do not unplug USB cable
• Wait until the process fully completes

Method 2: Update by LaserBurn APP

This is the official in-app firmware update method.

Step 1: Connect the Engraving Machine to LaserBurn APP

Action

Connect the Ray5 mini or miniS to the LaserBurn APP.

Expected Result

The app successfully communicates with the machine.

Important Notes

Ensure the connection remains stable during the update.

 

---

Step 2: Open Firmware Update Menu

Action

Navigate to:

Me → About → Firmware Update → RAY5 mini

Expected Result

The firmware update interface opens.

Important Notes

Follow the on-screen prompts carefully.

 

---

Step 3: Start Firmware Upgrade

Action

Begin the firmware upgrade process inside the APP.

Expected Result

The machine firmware updates automatically.

Important Notes

Do not close the APP during the upgrade.

 

Common Problems and Solutions

 

Tips for Better Results

• Use a high-quality USB data cable
• Keep your computer connected to stable power
• Close LightBurn and other serial-port software during flashing
• Verify the firmware file before starting
• Wait patiently for the update to complete
• Restart the engraver after firmware installation

If your machine behaves abnormally after updating:

Follow official machine specifications or instructions.

Frequently Asked Questions

Does firmware updating erase my engraving files?

The official instructions focus only on firmware flashing. Follow official machine specifications or instructions.

What baud rate should I use in ESPTool Web?

Use:
115200

 

What Flash address should I enter?

Use:
0x0

 

Why is my Ray5 mini stuck on the LONGER logo?

This can happen if firmware becomes corrupted or incomplete during flashing. Re-flashing the firmware using the official ESPTool Web method may help.

Do I need to erase flash before programming?

Yes. The official procedure instructs users to click:
Erase Flash
before programming the firmware.

Can I update firmware through the LaserBurn APP?

Yes. The official menu path is:

Me → About → Firmware Update → RAY5 mini

 

Where can I download official firmware files?

Official firmware downloads are available on the LONGER download pages.
LONGER Ray5 miniS Downloads

LONGER Ray5 mini Downloads

What should I do if the update fails?

• Recheck the firmware file
• Verify CH340 driver installation
• Confirm the correct COM port
• Repeat the official flashing steps carefully

If issues continue:

Follow official machine specifications or instructions.

Final Thoughts

Updating the firmware on the LONGER Ray5 mini and Ray5 miniS is a straightforward process when following the official instructions carefully. Whether you choose ESPTool Web or the LaserBurn APP method, using the correct firmware file and maintaining a stable connection are the most important factors for success.

Always follow the official flashing sequence exactly:

• Connect to the CH340 serial port
• Set baud rate to 115200
• Click Erase Flash
• Use Flash address 0x0
• Program the firmware

Following these official steps helps ensure a safe and reliable firmware upgrade experience for your laser engraver.

If your laser engraver’s air pump suddenly stops working, don’t panic — most issues are simple to diagnose and fix. Whether you’re using a Longer, xTool, or other diode laser, the air assist system plays a vital role in keeping cuts clean and preventing smoke buildup. This guide walks you through a professional, step-by-step troubleshooting process to identify whether the issue lies in your power connection, software control, wiring, or the pump itself.

Step 1: Basic Checks

Before diving into multimeters and wiring, start with the basics. The majority of “pump not working” issues come from overlooked connections or software misconfigurations.

1. Check Power and Physical Connections

• Confirm Power Supply:
  Make sure the laser engraver’s power cable is securely plugged in and the outlet has power. Test the outlet with another device, such as a phone charger, to rule out external issues.

  

• Inspect Cable Connections:
  Check whether the air pump cable is firmly connected to the laser’s mainboard. A loose or detached connector can easily stop the pump from receiving power or control signals.

  

2. Verify Software Settings

In most cases, the air pump is controlled via your engraving software, such as LightBurn or LaserGRBL.

• Check Air Assist Settings:
  Go to your device settings and look for air assist options.

  • Command M8 turns the air pump ON.

    

  • Command M7 turns it OFF.

    

    
    Ensure that your engraving layer has air assist enabled in the software.

• Manual Pump Test:
  Most Longer and other modern laser engravers have a manual air pump control button on the touchscreen interface.
  Try tapping it — if the pump starts, the issue was software-related. If it doesn’t respond, move to hardware diagnostics.

Step 2: Deeper Diagnostics Based on Symptoms

Once you’ve ruled out the basics, the next step is to identify which symptom applies to your air pump.

Case 1: The Air Pump Has No Sound or Vibration

If the air pump shows no sign of life — no hum, vibration, or airflow — it likely means power isn’t reaching the pump motor.

A. Check Input Voltage with a Multimeter

• Purpose: Determine whether power is being supplied to the pump.

• How:

  1. Set your multimeter to DC voltage mode (choose a range above 24V).

  2. Activate the air pump in software (LightBurn → enable M8).

  3. Touch the multimeter probes to the air pump’s positive and negative terminals.

• Results:

  • Voltage Present (12V/24V): Power is fine — the pump itself is likely faulty.

  • No or Very Low Voltage: The issue lies in the mainboard control circuit, MOSFET switch, or power supply line.

B. Test Pump with External Power

To isolate the problem, directly connect the pump to an external DC power source (such as an old router power adapter).

• If the pump runs normally: The issue is with your engraver’s control circuit.

• If the pump still doesn’t start: The pump motor is burnt out or mechanically jammed and must be replaced.

C. Check for Physical Damage

• Overheating or Burning Smell: The internal coil may have burnt out.

• Blocked Rotor: Foreign particles inside the air intake may cause the impeller to jam. Carefully open the housing and remove debris if possible.

Case 2: The Air Pump Makes Noise but No Air Comes Out

If you hear the motor spinning or vibrating but no air is flowing, the issue is likely airflow blockage or internal mechanical wear.

A. Test Airflow at the Pump Outlet

• Disconnect the output hose and turn on the pump.

• If you feel strong air coming out, the pump is fine — the problem lies downstream (air hose, nozzle, or fittings).

• If the airflow is still weak, the problem is internal.

B. Inspect the Air Path

1. Air Tubing:
   Ensure the hose isn’t bent, kinked, or compressed.

2. Connectors:
   Tighten all quick couplings and listen for hissing leaks.

3. Nozzle Blockage:
   The laser head nozzle is a common clog point. Smoke residue or molten particles can block the tiny air outlet.
   Use a fine cleaning needle or compressed air to gently unclog it.

C. Check Internal Pump Components

Depending on your air pump type (diaphragm or piston), internal wear can cause weak airflow.

• Diaphragm Tear: The rubber diaphragm may rupture after extended use, preventing pressure buildup.

• Worn Piston or Seal: For piston-type pumps, aging seals cause air leakage and low pressure.
  Replacing these parts is often more cost-effective than buying a new pump.

Summary: Step-by-Step Diagnosis Map

Final Tips for Preventing Future Air Pump Issues

• Keep your air filters and hoses clean to avoid smoke particle buildup.

• Avoid running the air pump continuously when not engraving.

• Perform regular cleaning of the laser head nozzle to prevent clogging.

• Use an external air assist filter if engraving materials that generate heavy smoke or resin.

By following these structured steps, you’ll be able to confidently identify and fix any laser engraver air pump malfunction — whether it’s a faulty cable, software misconfiguration, or internal damage.
With a little patience and the right approach, you can bring your Longer or any other laser engraver back to peak performance and keep your engraving results sharp, clean, and consistent.

Few things are more frustrating for creators and makers than turning on a laser engraver—only to find that nothing happens. Whether your laser won’t move, won’t fire, or isn’t connecting to the software, the good news is that most problems can be fixed with careful, methodical troubleshooting.

In this guide, we’ll walk you through two key stages of diagnosis:

1. Basic checks – covering power, software, and communication issues.

2. Hardware-level troubleshooting – focusing on the motion system, controller board, and laser module.

By following these steps, you can quickly identify the cause and bring your machine back to life.

Stage 1: Basic Inspection — Start with the Simple Things

This stage solves the most common and often overlooked issues.

1. Power and Physical Connection Check

Main power and emergency stop:

• Confirm that the wall outlet has power.

• Ensure the machine’s power cord is fully inserted.

• Check that the main power switch on the engraver is turned ON.

• Most importantly: verify that the emergency stop button is not pressed down.

  • If it is, twist it clockwise to release it.

Internal cables:

• Open the control box and inspect power and data cables leading to the mainboard, laser power supply, and stepper motor drivers.

• Look for loose connections, unplugged wires, or signs of burning or discoloration.

A loose cable or a triggered emergency stop is one of the most common reasons why a laser engraver won’t start.

2. Software and Communication Check

Connection status:

• Make sure your control software—such as LightBurn or LaserGRBL—is successfully connected to the machine’s controller.

• Most software shows a small indicator (usually green) when the connection is active.

COM port and driver verification:

• Open Device Manager on your computer and check whether the correct COM port appears when you connect the engraver.

• If you see a yellow exclamation mark, reinstall the USB driver.

• Try a different USB port or cable if the connection is unstable.

Device configuration:

• In your engraving software, ensure that you’ve selected the correct device profile and communication port.

• Double-check your power and speed settings — the laser power should never be set to 0%.

Manual control test:

• In the control panel, try jogging the machine using X+ / X– / Y+ / Y– buttons.

  • If the laser head moves correctly, motion control is functioning.

• Next, use the “Fire” or “Test Laser” function to see if the laser emits light.
  ⚠️ Do not test with materials under the laser; ensure the focus is correct and maintain safety precautions.

Interpreting the results:

• Moves but no light → problem with the laser module or power supply.

• No motion, no light → issue with mainboard or power supply.

• Moves and fires correctly → issue likely in your design file or engraving parameters.

3. Mechanical Movement Check

When powered off, try gently pushing the laser head along both X and Y axes.

• If it feels tight or jammed, inspect for belt tension issues or obstructions.

• Belts should not be too tight (causing drag) or too loose (causing slippage).

A simple mechanical misalignment can sometimes cause the engraver to fail its homing sequence or stop responding.

Stage 2: Deep Hardware Diagnostics

If all basic checks pass but the problem persists, it’s time to investigate specific hardware components.

1. Motion System Inspection

Limit switches:

• If your machine moves toward one side immediately after startup and crashes, a limit switch may be shorted or incorrectly wired.

• Use a multimeter to test continuity:

  • When not pressed, the switch should show open circuit.

  • When pressed, it should show closed circuit.

• Incorrect readings indicate a faulty or miswired switch.

Stepper drivers and motors:

• Check the driver module LEDs for power indicators.

• Swap motor cables between axes to confirm if the issue follows the motor or stays with the axis (a great way to isolate the cause).

2. Laser Power System

Laser power supply:

• Verify that the laser’s power source delivers the correct voltage (usually 12V or 24V).

• Inspect the PWM (Pulse Width Modulation) signal cable between the mainboard and laser module.

• If the laser doesn’t fire even with correct voltage, the module may be faulty.

Air assist and focus lens:

• Ensure your laser head lens is clean.

• Air assist should function properly—blocked airflow can cause overheating and poor cutting quality.

3. Controller Board and Firmware

Power input check:

• The controller board should receive stable voltage (use a multimeter to verify).

• If fans or LEDs on the board don’t turn on, the issue is in the power circuit.

Firmware status:

• Try reconnecting the engraver via software.

• If the firmware doesn’t respond, consider re-flashing or updating it according to manufacturer instructions.

Physical inspection:

• Look for signs of burnt chips, bulging capacitors, or unusual odors.

  • These are strong indicators of hardware failure.

Quick Reference: Diagnose by Symptom

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Final Tips for Successful Recovery

1. Always start from simple to complex—most failures are due to basic issues like loose plugs or emergency stop engagement.

2. Keep your firmware and software updated.

3. Use a surge-protected outlet to prevent electrical damage.

4. Maintain clean optics and stable cooling to avoid long-term damage.

5. Document your findings—troubleshooting once creates a reference for next time.

Conclusion

Troubleshooting a laser engraver that fails to start may sound daunting, but with a structured approach, you can isolate the cause in minutes. From checking power lines and communication ports to inspecting hardware modules, each step narrows down the issue systematically.

By mastering this diagnostic routine, you not only save repair costs but also deepen your understanding of how your laser engraver truly works.

Remember: the key to reliability is patience, process, and precision—just like laser engraving itself.

The RAY5 40W laser engraver is known for its precision and reliability, but like any mechanical device, it requires proper maintenance to ensure consistent performance. Two of the most common issues users encounter are timing belt breakage and engraving vibration. Both problems not only affect engraving quality but can also shorten the machine’s lifespan if left unaddressed.
This guide covers the most effective methods to prevent belt damage and eliminate vibration for optimal engraving results.

1. Preventing Timing Belt Breakage

A broken timing belt can bring your entire engraving workflow to a halt. Understanding why it happens and how to prevent it can save you time, money, and frustration.

1.1 Avoid Frequent Disassembly

The fixed end of the timing belt is made of polymer materials that wear down with repeated tightening and loosening. Every disassembly slightly reduces its structural strength.
👉 Tip: Avoid unnecessary belt removal or adjustments unless absolutely required.

1.2 Tighten Screws with Proper Torque

Overtightening the screws at the belt’s fixed point can cause uneven tension or even shear damage to the belt.
👉 Tip: Use a torque wrench and follow the manufacturer’s recommended torque settings to ensure even pressure and prevent micro-tears in the belt.

1.3 Add Cushioning Materials

Installing rubber pads or nylon washers between the metal bracket and the belt can distribute stress more evenly and minimize direct shear. Applying a small amount of silicone grease at the contact points also reduces friction, effectively extending the belt’s life.

✅ Result: With these three preventive actions, the risk of belt breakage drops significantly, and your engraver can operate smoothly over longer production cycles.

2. Fixing Engraving Vibration Issues

Vibration during operation is a common cause of poor engraving precision and blurred results. Proper alignment and tension adjustments can effectively eliminate this issue.

2.1 Check Machine Level and Axis Alignment

Ensure that your RAY5 40W is placed on a stable, level surface. Use a spirit level to check the base frame.
Then, inspect the X-axis and Y-axis rails — even a small misalignment can lead to high-frequency vibrations. If needed, loosen the rail brackets and realign both axes until they run perfectly parallel.

2.2 Adjust Timing Belt Tension

A belt that’s too loose causes lagging and vibration, while an overly tight belt increases motor load and noise.
👉 Tip: The ideal tension allows a 2–3mm elastic deflection when gently pressing the belt at its midpoint. Check the belt regularly and replace any worn or deformed parts.

2.3 Fine-Tune Roller Tightness

Loose rollers can wobble; overtight ones increase friction and wear. Adjust the eccentric nuts on the rollers until they spin smoothly without side play.
👉 Maintenance Tip: Inspect the rollers every few weeks, especially after high-speed engraving jobs, to maintain stable mechanical performance.

Result: With proper leveling, belt tension, and roller tuning, you can eliminate most vibration problems and achieve cleaner, sharper engraving results.

3. Maintenance Summary

4. Final Thoughts

Maintaining your RAY5 40W laser engraver is not just about fixing issues when they appear—it’s about preventing them from happening.
By following these guidelines on belt maintenance, alignment, and vibration control, you’ll ensure your engraver performs with consistent precision and minimal downtime.
A few minutes of maintenance can save hours of rework and extend the machine’s service life significantly.

Before diving into the workflow, let’s first clarify the core principles and technical definitions of the four AI features in LaserBurn.

1. Text-to-Image

Feature Overview:
This is the most fundamental and essential AI image generation function. By entering a descriptive phrase (known as a Prompt), the AI model generates a brand-new image from scratch that visually matches the description.

2. Image-to-Image

Feature Overview:
This function allows users to recreate or enhance an existing image by applying new prompts. It can alter the image’s style, tone, or content, or even generate a completely new composition based on the original structure.

3. Auto Focus

Feature Overview:
The autofocus function eliminates the need for manual adjustments. Using software-driven calibration, it automatically completes the focusing process.
LaserBurn identifies focus success when two points converge — ensuring high precision, reducing human error, and maintaining consistent, reliable focusing results. The fully electronic adjustment enables rapid optimization of the focal plane, significantly improving both efficiency and repeatability.

4. Batch Fill

Feature Overview:
Batch Fill allows users to simultaneously engrave multiple isolated, enclosed shapes (e.g., text, vector graphics, logos).
By using the built-in camera, the system automatically detects and aligns multiple similar materials and fills them with the same engraving pattern — enabling high efficiency and uniformity across all processed items.

II. Step-by-Step Practical Guide

Let’s walk through a practical example that connects all four features — creating a marketing poster for a new Cyberpunk-style phone case.

Step 1: Text-to-Image — Create the Initial Concept

Goal: Generate the main product visual for a cyberpunk-themed phone case.

Process:

1. Open the Text-to-Image module in the AI creation tool.

2. Enter the prompt — this is the key step; the more detailed, the better.

   Prompt (positive):

   Cyberpunk phone case, glowing neon blue liquid, intricate circuit pattern on surface, metal texture, dark background, cinematic lighting, futuristic, 8k, highly detailed

   Prompt (negative):

   blurry, ugly, deformed, watermark, text

   (Used to exclude unwanted elements.)

3. Choose parameters:

   • Style: Select a colorful, sci-fi-oriented style for poster visuals.

   • Aspect ratio: Set to 9:16 or as needed for your design.

4. Click Generate to produce the image.

Step 2: Image-to-Image — Refine or Replace the Background

Goal: Keep the phone case design but make the background more dynamic and futuristic.

Process:

1. Import the generated image from Step 1 into the Image-to-Image module.

2. Enter the new prompt:

   A busy neon-lit city street at night with cars flying by in the background and lights reflecting off the rain-soaked ground

3. Select the output image that best integrates the product and background.

Step 3: Auto Focus

Goal: Ensure precise laser focus to avoid uneven engraving caused by incorrect focal distance.

Process:

1. Place the phone case under the laser head.

2. In the focus settings, click Auto Focus.

3. The machine will automatically adjust until the two focus points converge — then you can proceed to engraving.

Step 4: Batch Fill

Goal: Automate multi-object engraving to ensure high consistency and productivity.

Process:

1. On the left toolbar, select the Camera function and click Capture.

2. Place the materials to be engraved within the working area, then position one reference item on the material surface.

3. Enable the AI Enhancement Mode and click Batch Fill.

4. Wait until all engraving objects are properly recognized and duplicated across materials.

III. Application Scenarios

When combined, these four features cover almost the entire creative and production pipeline — from concept generation to final product output.

Text-to-Image

Use Cases:

• Concept Design: Game characters, environments, and architectural ideation.

• Inspiration: Visualizing story scenes or creative concepts.

• Art Creation: Producing unique digital artworks.

• Social Media Assets: Quickly generating visuals that match your post content.

Image-to-Image

Use Cases:

• Style Transfer: Turn a regular photo into a sketch or painting.

• Product Visualization: Convert hand-drawn sketches into realistic renders.

• Old Photo Restoration: Restore and restyle vintage photos.

Auto Focus

Use Cases:

• Camera Detection: When material surfaces are uneven, the Z-axis automatically adjusts to keep the camera focus consistent.

• Control Logic: Driven by a stepper motor, the lens performs active tracking and continuous autofocus for precision measurement and positioning.

Batch Fill

Use Cases:

• Mass Engraving: Serial numbers, logos, QR codes, or names on materials like metal, wood, or acrylic.

• Variable Data Engraving:
  For instance, entering “Not: 1” automatically generates a series:

  Not: 2, Not: 3, Not: 4 …

✅ Tip:

Mastering the four AI features — Text-to-Image, Image-to-Image, Auto Focus, and Batch Fill — allows creators to seamlessly transition from imagination to execution, achieving efficient, consistent, and visually stunning engraving results with LaserBurn.

To make sure your Longer laser engraver works with your computer, check that the CH340 driver is installed and working well. If not, please download and install the appropriate driver for your device.

Step 1: Check the CH340 Driver Installation

• A. The connection issue may occur if the required CH340 driver is missing or improperly installed.

• B. For macOS 10.15 or later, the CH340 driver is already built-in and does not require manual installation.

• C. If installation is needed, download the driver package from the link below:
  👉 CH340 Driver Download

Video Tutorials:

• How to Install CH340 Driver for LightBurn on macOS Sequoia

• How to Install CH340 Driver for LightBurn on macOS

Step 2: Verify COM Port Detection

For Windows Users

1. Connect your Longer laser engraver to your PC using the included USB cable.

2. Download and install the CH340 driver. The installation may prompt you to restart your computer.

3. Follow the on-screen instructions to complete installation.If any error messages appear, please contact Longer technical support for assistance.

4. To confirm successful installation:

Right-click This PC, select Manage → Device Manager → Ports (COM & LPT).

If you see CH340 listed under COM ports, the system has successfully recognized your device.

For macOS Users

1. Connect your laser engraver to your Mac via the provided USB cable.

2. Download and install the CH340 driver. You may need to reboot the system.

   • If installation errors occur, contact Longer technical support.

3. After restarting, go to:
   System Preferences → Security & Privacy → General → Allow

   • Approve the CH340 driver installation when prompted (you may need to restart again).

   • Reconnect your laser engraver. Now LaserBurn, LightBurn, or LaserGRBL should automatically detect your device.

     

   • If the “Allow” button does not respond, follow the terminal method below.

Step 3: Load the Driver Manually via Terminal

1. Open Terminal:
   Finder → Applications → Utilities → Terminal

2. Copy and paste the following command:

   
   

   sudo kextload /Library/Extensions/usbserial.kext/

3. Press Enter. If prompted, enter your Mac user password, then press Enter again.

   

4. Once the command executes successfully, you will see a confirmation message in the Terminal window.

After completing these steps, your system should recognize the Longer laser engraver correctly. You can now connect and control your device through LaserBurn, LightBurn, or LaserGRBL without connection errors.