Project Dashboard Accessories and Upgrades Lulzbot TAZ Workhorse/ TAZ 6 Filament Runout Sensor Installation Workflow

1 Getting Started

The LulzBot TAZ Workhorse/ TAZ 6 Filament Runout Sensor will catch the moment your print runs out of filament during a 3D print. This option will stop your print automatically until you can return to add more filament.

The items included for the installation of the TAZ 6/Workhorse Filament Runout Sensor:

  • SideKick Filament Runout Sensor
  • Control Box Grommet
  • 8" Wire Tie
  • 1X Runout Sensor harness Clip

Tools needed for the installation:

  • 2mm Hex Screwdriver
  • Side Cutters or Scissors

Before starting turn off and unplug you TAZ Workhorse/ TAZ 6

Note that you will need Cura LE version 3.6.33 or later to install the firmware required to enable the runout sensor.
See step 8.

Materials and tools

2 Remove Feed Tube Spinner and replace with Runout Sensor

Remove the feed tube spinner from the feed tube holder.

Then take the filament runout sensor and slide it onto the feed tube holder, make sure the longer arm is facing up.

Remove the feed tube spinner
Slide the filament runout sensor onto the feed tube holder

3 Route the Runout Sensor Wire Harness

Remove the two wire clips that are on the top extrusion.

Now take the wire harness from the runout sensor and route it up the backside of the extrusion up to the top extrusion. Then push it inside the extrusion channel then place the clip that came inside the kit and snap it onto the top extrusion.

Make sure the harness is inside the extrusion then attach the runout sensor wire clip to the top extrusion near the corner and reattach the two wire clips to secure the wire harness to the extrusion.

Remove the clip on the top extrusion
Repeat for the second clip
Route the wire harness along the top extrusion and press it inside the channel
Place the clip that came with the runout sensor on the top extrusion close to the corner
Reattach the wire clip
Repeat for the second wire clip

4 Remove Electronics Cover from the Frame

TAZ Workhorse: Use a 2mm hex screwdriver to remove the 10 M3 x 6mm BHCS that hold the electronics cover to the frame. Make sure to set these in a safe location because they will be used in a later step.

TAZ 6: Use a 2mm hex screwdriver to remove the 14 M3 x 6mm BHCS that hold the electronics cover to the frame. Make sure to set these in a safe location because they will be used in a later step.

TAZ Workhorse - Remove the 10 M3x6mm BHCS
TAZ 6 - Remove the 16 M3x6mm BHCS

5 Connect the Wire Harness to the Control Board

Both: Route the runout sensor harness through the hole in the new flexy grommet.

TAZ Workhorse: Find the port that say X-max, it should be under a grey harness, and connect the runout sensor harness to the board.

Then replace the electronics cover using the same screws that were removed earlier.

TAZ 6: There should be one purple extruder 2 harness that is still connected to the board, remove the harness and connect the runout sensor to that port. It should be X-max.

Then replace the electronics cover using the same screws that were removed earlier.

Route the runout sensor wire through the hole on the new flexy grommet
Remove the last extruder 2 harness (purple wires).
Then connect the runout sensor harness to that same port (X-max)
TAZ Workhorse - Replace the electronics cover
TAZ 6 - Replace the electronics cover

6 Remove Extruder 2 Plug

TAZ Workhorse: Remove the black flexy plug that is covering the extruder 2 hole. Then place the grommet that came with the runout sensor inside the extruder 2 hole.

TAZ 6 and some TAZ Workhorses: Follow the picture below to remove three wire connectors and one ground screw to disconnect the extruder 2 harness. Start at the extruder 2 connector and trace the wires back to the board to help find them.

Start by removing the red, white, green, and black harness from the bottom right port.

Then find the red/orange harnesses that have two wires each, and remove the bottom connector. They should be next to the yellow harnesses.

Then look at the top row of connectors and find the ports that says Heat 1 and Fan 1 and remove both harnesses. It should have red wires with yellow ends for the Heat 1 and Blue/white with yellow ends for Fan1.

Find the extruder 2 ground wire and using a cutting pliers, cut the ground wire.

Now remove the four phillips screws that hold the extruder 2 connector to the electronics case to the frame and remove the extruder 2 connector.
Note: There should be one purple harness that is still connected to the board, this will be used in the next step.

Then place the new flexy grommet inside the extruder 2 hole.

TAZ Workhorse - Remove the black flexy extruder 2 plug
TAZ Workhorse - Place the new black flexy grommet inside the extruder 2 hole
TAZ 6 - Remove the red, white, green, and black harness from the bottom right port.
TAZ 6 - Find and remove the bottom red harness near the yellow harnesses
TAZ 6 - Find the top row of connectors and remove the connector that is in the Heat 1 and Fan1 ports
TAZ 6 - Use a cutting pliers and cut the extruder 2 ground wire
TAZ 6 - Remove the four phillips screw that holds the connector to the electronics case
TAZ 6 - Place the new black flexy grommet inside the extruder 2 hole

7 Attach Feed Tube

Remove the feed tube from the feed tube spinner by cutting the cable tie holding the feed tube in place.

Then slide the feed tube inside the runout sensor and secure with the cable tie provided in the filament runout sensor kit.

Remove the feed tube from the feed tube spinner
Slide it into the runout sensor and secure with a cable tie

8 Update the Printer Firmware

Once the runout sensor is install, plug the printer in and then turn the printer on.

If you have not done so already, ensure that you install Cura LE version 3.6.33 or later.

Flash your printers firmware by using the upgrade firmware button under manage printers in Cura.

The minimum required frimware version is:
- Workhorse - 2.0.9.0.11.hex
- Taz 6 – 2.0.9.0.11.hex

Done! Take me home