Pulse XE Z-axis Non-destructive Switch Adapter

Pulse XE Z-axis Non-destructive Switch Adapter

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Allows a non-destructive replacement of inductive Z-axis top switch.

The Problem:

Inductive probe switches were never meant to be used on 3D printers, nor were they designed to measure the Z axis accurately. They were designed to switch a load on large equipment when a large hunk of metal came near the contact.
You must power the probe from a supply of typically 6 to 36v and its ground pin to ground. A few types can work from +5V, so for those you can connect its Vcc pin to +5V instead.

The complication is:

What happens if the ground wire to the sensor breaks or a bad crimp comes apart? If that happens, then the supply voltage to the sensor (5V, 12V or 24V) gets fed through the sensor electronics and the NPN output transistor to the output pin. If the supply is greater than 5V this will likely fuse the endstop input pin of the Azteeg or other control board. The board may survive, but there is no guarantee of that. Also the LED will get reverse biased and may fuse.

The Solution:

Non-destructive switch shelf which will slide into the original mount location. The addition of a standard microswitch mounted on the adapter.

Notes:

I am not exactly sure why MatterHackers implemented the inductive probe z-axis switch in the first place, maybe it had something to do with a requirement to Smoothieware? If that’s the case, the probe switch is no longer needed. The adapter needs to printed with solid infill so that it wont crush when pressure is applied by the mount screw.

Waterproof Microswitch:
https://www.amazon.com/gp/product/B07JLYTP2V/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1