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Printing from your Gigabot's Viki Controller

Overview

It is highly recommended that you print from Gigabot's microSD card using the Viki controller. When printing via USB connection, your Gigabot can be disrupted by a host of background processes, sleep timers, and operating system functions on the host computer through the USB port.

Viki_2.0.jpg

Notes

  • Using a Mac computer to transfer files to the microSD card will automatically cause the Fat32 (File Allocation Table, the way Windows stores data on your hard drive) formatting to become null and invalid.
  • In the below procedures, "selection" is done by clicking the center button in the center of the Viki selection wheel. "Scrolling" is done by rotating the selection wheel, much like the first generation iPods. In the procedures below, these details will be omitted to make the steps concise and the verbs "select" and "scroll to" will be used in their place.

Instructions:

  1. Copy the .gcode file you created in Simplify3D to the microSD card.
  2. Insert the microSD card into the Viki Controller.
  3. Start your print using one of the following three options: 
    1. From Pronterface:
      1. Insert the microSD card into the Viki.
      2. Click on the SD button at the top of the screen. A dialog box will open with a list of files on the SD card.
      3. Choose the file you wish to print, and click start to begin the print.
      4. Remove the USB cable from the computer and allow your Gigabot to print.
    2. From Simplify3D:
      1. Insert the microSD card into the Viki.
      2. Open the machine control panel in Simplify3D.
      3. Click on "Print from SD card."
      4. Choose the file you wish to print and click start to begin the print. 
    3. From the Viki: 
      1. Insert the microSD card into the Viki.
      2. Press the center button on the scroll wheel.
      3. Rotate the wheel to highlight the "Init. SD-card" option.
      4. Click the center button to confirm this option (this will initialize the card).
      5. Rotate the wheel to highlight the "Print from SD" option.
      6. Click the center button to confirm this option.
      7. Rotate the wheel to choose your file and click the center button to begin printing.
  4. To move the print head and extruder: 
    1. Press the center button on the Viki controller circle.
    2. Scroll to and select "Prepare."
    3. Scroll to and select "Move Axis."
    4. Scroll to and select "Increment." (Note: Z and E axis will only work with 1.0mm and 0.1mm increments)
    5. Scroll to and select axis of choice.
    6. Scroll clockwise for "+" movements and scroll counter-clockwise for "-" movements.
  5. To change the temperature while printing:
    1. Press the center button on the Viki controller circle.
    2. Scroll to and select "Tune." 
    3. Scroll to and select either "Nozzle, Nozzle2, or Nozzle3" or "Bed", depending on what you would like to change.
    4. Change the temperature to the desired value and press the center wheel to confirm the setting.
  6. To pause a print: 
    1. Press the center button on the Viki controller circle.
    2. Scroll to and select "Pause Print."
  7. To resume a print: 
    1. Press the center button on the Viki controller circle.
    2. Scroll to and select "Resume Print."
  8. To stop a print and send the bed back to home (commonly done after a failed start to a print):
    1.  Press the center button on the Viki controller circle
    2. Scroll to and select "Stop Print."
    3. Press the center button again to re-enter the menu.
    4. Scroll to and select "Prepare" and select "Auto-Home."
  9. To disable the stepper motors:
    1.  After adjusting the z-axis screw, it is important to check head clearance from the bed. To do so, the stepper motors should be disabled.
      1. Press the center button on the Viki controller circle.
      2. Scroll to and select "Prepare."
      3. Scroll to and select "Disable Steppers."
      4. The extruder trolley should now move freely in the X and Y direction. Gently use the belts to pull the extruder around on the bed to check for clearance, since the weight of a hand on the extruder trolley may cause a flex in the beams that can cause the nozzle to touch the bed.
      5. If the head comes in contact with the edge of the bed or bed surface, follow the bed leveling procedure to make sure the bed is level, then adjust the z-axis screw after leveling.
  10. To adjust print speed during a print:
    1. There are many reasons why you might want to speed up or slow down a print. Typically, slower speeds mean better quality and better adhesion for bottom layers. 
      1. Press the center button on the Viki controller circle.
      2. Scroll to and select "Tune."
      3. Scroll to and select "Speed."
      4. Change the speed to the desired value and press the center wheel to confirm the number.
      5. Start off with small values here and see the output difference. Once you feel more comfortable adjusting, see what larger changes do for your print. (It is certainly possible to ruin a print by pushing these values too much in either direction!)
    2. To change the extrusion amount (the amount of filament being extruded):
      1. If you notice that your nozzle is either over- or under- extruding by the presence of gaps (under-extruding) or ridges where lines meet on a bottom layer (over-extruding), try adjusting the extrusion a few percentage points. (A little goes a long way here.)
        1. Press the center button on the Viki controller circle.
        2. Scroll to and select "Tune."
        3. Scroll to and select "Flow."
        4. Change the extrusion to the desired value and press the center wheel to confirm the number.
        5. Start off with small values here and see the output difference.

LCD Menu Tree

Questions or concerns? Reach out to our support team at support@re:3D.org or open a support ticket

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