K8400 Plotter

You need:

• 1 Slider printed part
• 1 Holder printed part
• 1 Nail 4mm x 50
• 1 bearing LM6UU
• 1 axle 6mm, 75mm
• 2 screws M3x10 + washer
• 3 screws M3X4 to mount the spring
• 1 screwq M3X8 to tighten the pencil
• 1 SG90 Mini servo
• 3 wired 130mm ribbon cable + pin connector
• 1mm wire(nail e.g.)
• 2 cable end sleeve 1.5mm
• 1 pressure spring OD10mm 18mm

Patch the Firmware:

You can get the firmware source code from the Vertex homepage at

https://vertex3dprinter.eu/downloads/vertex-downloads/

(choose for 1 or for 2 extruders)

In Confiuration.h enable NUM_SERVOS and set it to 1

define NUM_SERVOS 1

In Pins.h set:

define SERVO0_PIN 53

Then use Arduino 1.6.0 to upload the program to your printer

Installing the Ribbon Cable

Uninstall the Display controller board and attach the 3 Ribbon Cable to the back of the socket where the cable from the motherboard connects

MINUS, PLUS, SS are pins, 2, 6, 16

Install back the Display controller . Then guide the Cable nicely to the Hotend :) :)

Preparing the Hardware:

• File the Head of the Nail to be almost half
• Cut it to a length of 50mm
• Thread the cable end sleeves to a helping wire and solider it onto the end of the spring
• Attach the lever to the servo and drill a 1mm hole into the end

Assembling the plotter

• Clean up the prints and support the holes with a drill. The diameters are 12mm, 4mm, 2.5mm
• Insert the Axle into the holder
• Insert the Nail into the Holder and glue it
• Insert the Servo into the holder and mount it.
• Insert the LM6UU into the slider
• Insert the M3x8 screw into the slider(will tighten the pencil)
• Put the Spring onto the glider and mount it with 3 screws
• Combine the Holder and the slider and attach the spring with the servo with a wire

Install the Plotter into the place of 2nd nozzle with the 2 screws and washers from the bottom.

Plug in the Servo and watch for correct polarity. ( MINUS, PLUS, SIGNAL) its essential.

Testprogram:

G28 ; Auto-home

G0 X75 Y100 ; go to start of circle

G4 P100 ; wait until arrived

M280 P0 S60 ; lower pen

G2 X75 Y100 I50 J0 ; one full circle

G4 P100 ; wait until complete

M280 P0 S90 ; lift pen

M4 ; end of Program

Look at this: https://youtu.be/ijZioF61R2k

Any kind of contributions are welcome!

Happy plotting