Pulse Duet3 Mod

  • Pulse Duet3 Mod

    The Problem:
    The Azteeg X5 GT control board is great for beginners who need that “push button” print type of system. But for advanced, commercial style printing, the Azteeg falls short.

    The Solution:
    Duet 3 Mini 5+ mod

    The Duet 3 control board uses a web control interface which can be used on personal computers, laptops, tablets and mobile phones, across multiple platforms. Basically anything that can open a web browser, wired or wireless. The system uses RepRapfirmware instead of Marlin. This allows you to use gcode directly to control your printer. No more compiling every time you wish to make a change. Quick changes to gcode on the web interface and you are good to go.

    Duet3D is not for everyone. But, once setup, the system can be ran by most users, however you will need to hit the books and learn basic gcodes and make a cheat sheet.

    I have done the heavy lifting, setting up the firmware for all of the stepper motors, end stops and heaters. Some tweaking will be required if you intend to keep the dual Z-axis motors. My config files are set to use the single Z-axis modification. All end stop switches will need to switched over to the Normally Closed position, moving one of the wires. The control board box will need to be printed and mounted to your D-frame. I used a thick piece of plastic between the two. This will be up to you. The extruder cable may need to be re-mounted above the frame along the backside for length.

    All config files, wiring diagrams and pictures are located at my GitHub page for free download.

    Duet3D Config Files

    Hardware needed:

    Duet3 Mini 5+ control board

    CaribouDuet mounting box

    Miscellaneous hardware will be needed depending on the size used. I suggest picking up a multi pack of bolt and nut hardware.

    You will need a - IWISS SN-2549 Crimping Tools for AWG28-18 (0.08-1.0 mm2) XH2.54/Dupont 2.54/2.8/3.0/3.96/4.8/KF2510/JST Terminal Crimper Plier Ratcheting Wire Connector Crimping Tool

    A normally closed micro switch

    92mm Noctua fan and grill

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  • My modified start code. Note that G29 is commented out. This must be changed post export. Use Notepad ++ or Xed in Linux. Since you are no longer using MatterControl to level the print bed, you must call the height map from your duet board at start of the print. Prior to printing, manually use G28 home all and then G29 S0 to create the bed mesh.

    Modified Start Code:

    G28 ; home all axes
    ; G29 S1 ; load height map (remove comment, post export)
    M109 S[temperature]

    G1 Y0 X5 Z0.8 F1800 ; Purge line (extra length and at the edge)
    G92 E0 ; Purge line
    G1 X230 Z0.3 E25 F600 ; Purge line
    G92 E0 ; Purge line
    G1 E-2 F2400 ; Purge line

  • One of the other problems I didn't mention about the Pulse XE printer and Mattercontrol is the usb connection between the two. There is a battle getting line code to the printer through the usb cable without errors or the printer just stopping mid print. My original usb cable from Matterhackers was bad. After trying several higher quality usb cables, I ended up getting a foil shielded usb cable and installing my own cable chokes at either end. Also, there is a limitation on usb cable length, the longer the cable, the more problematic the connection.

    Also, I am not sure how many printers you can run at a time from one computer. If there is a failure on the computer, or Windows decides to do an update, the connection will be enterupted for all the printers connected.

    -> With the Duet electronics, there is no usb cable. Files are uploaded directly to the Duet via ethernet cable or wifi in one file, big upload button on the website interface. No fumbling with sdcards either. Files are checked for errors by Duet, depending on your settings.

  • One other thing to note. You do not have to install a top Z-axis end stop switch. I installed it because I have two different Z homing options. If I home Z all G28, then the Zprobe touches the bed and then moves up 5mm and stops, ready for a print. However if I click the Z- only button, Zprobe touches the bed and then returns to the top, terminating at the end stop. This moves the hotend up and out of the way for bed access.

  • You need to comment out your G28 Z0. My printer runs parts 24/7 so I set my M104 to S[temperature], so I do not have to constantly heat and cool. You may want to change your M84 to M84 S30 which will release your motors to idle after 30 seconds of inactivity. Or send this code manually just before part removal to hold the bed in place M84 Y0 S30.

    Modified End Code:
    G1 E-[retract_length] F[retract_speed]
    G0 X5 Y215 Z200 F600 ; Moves to end resting position, push bed forward for part removal, modify Z to your endstop
    ; G28 Z0 ; Retract and move away, then home Z axis

    M104 S0 ; turn off temperature
    M140 S0 ; turn off heat bed
    M106 S0 ; turn off layer fan
    M84 ; disable motors

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