Z-Axis Homing Issues - Lulzbot Mini Toolhead on Taz 6

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JMcAz7
Posts: 1
Joined: Fri Dec 28, 2018 6:22 pm

Z-Axis Homing Issues - Lulzbot Mini Toolhead on Taz 6

Post by JMcAz7 » Fri Dec 28, 2018 6:29 pm

I recently purchased a Lulzbot Mini 1 toolhead on the cheap, and I'm looking to set it up as my dedicated 3mm toolhead on my TAZ 6 (which is converted permanently to 1.75mm). I printed the new mounts, fan ducts, etc, and physically it's good to go. I moved the pins around the connector to match the TAZ 6, and it heats, extrudes, etc. From what I can tell it should be gravy.

It will not home the Z axis correctly. Normally, when it homes the Z axis it will home the bed first, which then moves back about 1-2" before the extruder is lowered onto the home switch. With my new extruder hooked up, the bed never moves back after homing and the Z-axis lowers onto the corner leveling pad instead. It is making contact and it's seeing the connection since it does the quick down/tap/slow down/tap cycle like it does during leveling, but then just repeats this cycle over and over again. That's all I get, and it just loops at this point.

If I plug in my original extruder, everything works perfectly without issue.

Anyone seen this before? Any thoughts? It's really frustrating and doesn't make sense. Thanks in advance.

Galadriel
Aleph Objects | LulzBot
Posts: 271
Joined: Mon Sep 25, 2017 10:23 am

Re: Z-Axis Homing Issues - Lulzbot Mini Toolhead on Taz 6

Post by Galadriel » Mon Dec 31, 2018 10:42 am

The endstop wiring on the Mini and Taz 6 toolheads are different, my first thought on this is that most likely your X-Max endstop is remaining triggered because of the difference in the wiring. If you haven't already I would try moving the wiring on the endstop on your toolhead.
Here is how the endstop wiring will normally look on a Mini toolhead: https://ohai.lulzbot.com/media/uploads/ ... x0_q85.jpg
Here is how the endstop wiring will normally look on a Taz 6 toolhead: https://ohai.lulzbot.com/media/uploads/ ... x0_q85.jpg
Be sure to completely power off and unplug your printer before making adjustments to your wiring.

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