8mm Inductive Probe holder for Taz 5 w/ E3D Titan mount

thingiverse

This is intended for use with a side mount E3D Titan extruder on the Lulzbot Taz 5, although it might also work on the Taz 6, I'm not entirely sure. The best upgrade I've ever made was switching from an aluminum bed to a glass bed; this one takes second place as the inductive probe addition. You can see in the mockup picture that it attaches to the extruder mount rather than the extruder plate itself, which should allow for swapping out extruders as long as they don't use the full width of the plate, such as the E3D extruder found at http://www.thingiverse.com/thing:1965603. I used a different mount initially, but it's compatible with this one and I couldn't find the owner of the other one, so I'm not posting it without permission. The probe I used is the LJ18A3-8-Z/BX 8mm Approach Sensor NPN NO from http://a.co/8DG012q. A note on this probe: when connected correctly, you'll need to provide it with +24V (Brown wire) and Ground (Black wire), after which the output (blue wire) will be 3.3v if nothing is detected and 0v otherwise. Something to keep in mind about this probe - it looks like the wiring is incorrect according to the specs, but it's not; if you use the expected wiring, you'll damage your board. There's no risk as long as you hook it up correctly, but I'm taking no responsibility regardless. Always check with a voltmeter before doing something like this. On the stock Taz, if you run +24V to the probe, you can then connect the blue wire on your Z endstop to the blue wire on the probe and the black wire on the endstop to the black wire on the probe (ground is shared between the Z endstop and the 24VDC system) and it should work as a drop-in replacement for your Z sensor from a wiring perspective. You won't need any voltage divider with this probe. However, you'll still need to enable auto bed leveling in your Marlin firmware - that's a bit of a tricky topic, but I'll try to answer any questions you have in the comments. Edit April 10, 2016: I found that the previous version of the probe holder broke off too easily, so I made a new one following the same principles as the Prusa MK2S uses. This one doesn't require hex nuts and is actually easier to install. If you print the "small" version, you'll need to use a screwdriver to pull the circle open to insert or move the probe, but it shouldn't require any hardware to hold it; if you use the "normal" version, then you should use two M3 screws and two M3 square nuts to tighten it after positioning it where you need it. This one is both more durable and easier to adjust. V2 holds the probe closer to the nozzle, which should give you slightly more accurate readings. Print Settings: Supports: Yes Notes: Make sure you put supports under the hex opening to hold the bolt; it'll be really difficult to tighten without that.