TWOTREES MKS DLC32 V2.1 Mainboard User Manual

1. Introduction

The TWOTREES MKS DLC32 V2.1 Mainboard is an advanced 32-bit CNC upgrade controller designed specifically for desktop laser engraving and cutting machines. This offline engraving master control kit offers enhanced performance, including a high PWM frequency for finer engraving details and smoother grayscale expression compared to traditional systems. It supports both web-based and mobile app control, providing flexible operation and file management capabilities. This manual will guide you through the setup, operation, and maintenance of your MKS DLC32 V2.1 mainboard.

2. Key Features

• High-Performance Control: Equipped with an ESP32-WROOM-32U (32-Bit) MCU, offering a 240MHz frequency for efficient processing.
• Enhanced Engraving Quality: PWM frequency up to tens of KHz for delicate engraving effects and smoother grayscale.
• Offline Operation: Functions as an offline engraving master control kit.
• Flexible Connectivity: Supports WEB page control via LAN browser and a dedicated mobile phone APP.
• Broad Software Compatibility: Compatible with popular software such as LaserGrbl, Xloader, GrblController, benbox, mDraw, and LightBurn.
• Integrated Peripherals: Features SD card slot, USB-C interface, and various motor and sensor connections.

3. Specifications

4. Setup and Installation

Before beginning installation, ensure your laser engraver is powered off and disconnected from any power source. Refer to the detailed diagram below for component identification and connection points.

4.1 Component Identification:

• Motor Drive Slot: Connect stepper motor drivers (A4988, DRV8825, TMC2208/2209/2225).
• X-axis Motor, Y-axis Motor, Z-axis Motor: Connect corresponding stepper motors.
• 12V/24V Output: Power output for accessories.
• TTL Output: For laser module TTL signal.
• XY/Z-axis End Stop/Gyroscope: Connect limit switches or gyroscope.
• Probe Interface: For Z-probe connection.
• I2C Interface: For I2C communication devices.
• TS24/TS35 Touch Screen Interface: Connect optional MKS TS24-R or TS35-R display.
• Runback Button Interface: For external reset button.
• TF Card Slot: Insert MicroSD card for offline engraving files.
• USB-C PC Interface: Connect to computer for firmware updates and control.
• 12V/24V Input: Power input for the mainboard.
• Power Fuse: Protection for the power input. Ensure the power switch interface fuse is pulled out if using external power switch.
• Power Switch Interface: For connecting an external power switch.
• CNC Principal Axis Interface: For spindle control.
• Buzzer: Onboard buzzer for notifications.

4.2 Initial Connection Steps:

1. Mount the Mainboard: Securely mount the MKS DLC32 V2.1 mainboard to your machine's frame using appropriate standoffs and screws.
2. Connect Stepper Motors: Connect your X, Y, and Z-axis stepper motors to their respective motor drive slots. Ensure correct wiring according to your motor and driver specifications.
3. Install Stepper Drivers: Insert the A4988, DRV8825, or TMC series stepper drivers into the motor drive slots. Pay attention to the orientation to avoid damage.
4. Connect Laser Module: Connect your laser module's power and TTL signal cables to the designated ports. For lasers over 20W, ensure additional power is supplied as required by the laser module.
5. Connect End Stops (Optional): If your machine uses limit switches, connect them to the XY/Z-axis end stop interfaces.
6. Power Supply: Connect a 12V-24V DC power supply (less than 10A) to the 12V/24V Input terminal.
7. USB Connection (for initial setup): Connect the mainboard to your computer using the provided USB-C cable. This is often needed for initial firmware flashing or software configuration.

5. Operation

5.1 Software Control (PC)

The MKS DLC32 V2.1 is compatible with several PC-based control software. For detailed instructions on each software, please refer to their respective documentation.

• LaserGrbl: A popular, free software for GRBL-based laser engravers. Ideal for basic engraving tasks.
• LightBurn: A powerful, paid software offering advanced features for laser cutting and engraving, including image processing, vector editing, and camera support.
• Other Compatible Software: Xloader, GrblController, benbox, mDraw.

To use PC software:

1. Install the CH340 USB driver on your computer if not already present.
2. Connect the mainboard to your PC via the USB-C port.
3. Open your chosen software (e.g., LightBurn or LaserGrbl).
4. Configure the software to connect to the correct COM port assigned to the MKS DLC32 V2.1.
5. Load your engraving or cutting file and begin operation.

5.2 Mobile App Control

The MKS DLC32 V2.1 supports a dedicated mobile phone application for convenient control and file management.

1. Download and install the official MKS mobile app from your device's app store.
2. Ensure your mobile device is connected to the same local area network (LAN) as the MKS DLC32 V2.1 mainboard (via WiFi).
3. Open the app and connect to the mainboard. The app allows you to edit pictures, convert them into engraving files, and transfer them directly to the mainboard.
4. You can also use the app for conventional control functions such as jogging, setting parameters, and starting/pausing jobs.

5.3 Web Interface Control

The mainboard features a built-in web interface for control and file transfer over your local network.

1. Power on the MKS DLC32 V2.1 mainboard.
2. Connect your computer or mobile device to the same LAN as the mainboard.
3. Find the IP address of the mainboard (this can often be found through your router's connected devices list or by connecting via USB and using a serial terminal).
4. Open a web browser and enter the mainboard's IP address.
5. You can now perform various engraving operations, manage files, and monitor the machine directly from your browser.

6. Maintenance

• Keep Clean: Regularly clean the mainboard and its surroundings to prevent dust and debris accumulation, which can cause overheating or short circuits. Use compressed air or a soft brush.
• Check Connections: Periodically inspect all wiring connections to ensure they are secure and free from corrosion. Loose connections can lead to erratic behavior or damage.
• Firmware Updates: Check the official TWOTREES website or community forums for firmware updates. Keeping your firmware up-to-date can improve performance and add new features.
• Power Supply: Ensure a stable and correct voltage power supply (12V-24V DC) is used. Fluctuations can damage the board.
• Environmental Conditions: Operate the mainboard in a dry, well-ventilated environment, away from extreme temperatures and humidity.

7. Troubleshooting

• No Power:
  • Check power supply connections and ensure it's providing the correct voltage.
  • Inspect the power fuse on the mainboard for continuity. Replace if blown.
• Cannot Connect via USB:
  • Ensure the CH340 USB driver is correctly installed on your computer.
  • Try a different USB-C cable or USB port on your computer.
  • Verify the correct COM port is selected in your control software.
• Cannot Connect via WiFi/Web/App:
  • Ensure the mainboard and your device are on the same local network.
  • Check your router settings to ensure no firewall or network isolation is preventing communication.
  • Verify the mainboard's IP address is correct.
• Motors Not Moving:
  • Check all motor wiring connections.
  • Ensure stepper drivers are correctly inserted and configured (e.g., micro-stepping jumpers).
  • Verify power is supplied to the motors (some drivers require separate motor power).
  • Check if the control software is sending commands and if the GRBL firmware is responding.
• Laser Not Firing or Weak:
  • Check laser power and TTL signal connections.
  • Ensure the laser module is receiving adequate power (especially for high-power lasers).
  • Verify laser settings in your control software (power, speed, focus).
  • Confirm the laser module itself is functional.

8. User Tips

• Start Simple: When first using the mainboard, begin with simple engraving tasks to familiarize yourself with the software and machine behavior.
• Backup Firmware: Before attempting any firmware modifications or updates, always back up your current firmware configuration.
• Community Support: Engage with online communities and forums dedicated to GRBL and MKS DLC32 for tips, tricks, and troubleshooting advice from other users.
• Cable Management: Organize your cables neatly to prevent interference, accidental disconnections, and wear and tear.
• Safety First: Always wear appropriate eye protection when operating a laser engraver. Never leave the machine unattended during operation.

9. Warranty and Support

For warranty information and technical support, please refer to the official TWOTREES website or contact your retailer. Keep your purchase receipt as proof of purchase for any warranty claims. Online resources, including FAQs and troubleshooting guides, may also be available on the manufacturer's support pages.