Add MGN12 Euclid mount, based on Trident carriage (#408)

* Add MGN12 Euclid mount, based on Trident carriage

* Add Trident check mark, and update readme to link to docks

* I always mess up markdown links like that

printer_mods/README.md

@@ -155,6 +155,7 @@ like so:
 | Jon | [adxl345 skirt keystone](./Jon/adxl345_skirt_keystone) | Skirt keystone for ADXL345 using Microfit 3.0 | :x: | :x: | :heavy_check_mark: | :grey_question: | :grey_question: | :heavy_check_mark: |
 | joposter | [V0 Clippable LED Caselight](./joposter/v0_clippable_ledmounts) | LED Case light for the V0 that clips into the extrusions | :heavy_check_mark: | :x: | :x: | :x: | :x: |
 | JosAr | [Klicky Probe](./JosAr/Klicky-Probe) | Microswitch based inductive probe replacement | :x: | :heavy_check_mark: |:heavy_check_mark: | :x: |
+| KageUrufu | [Euclid Probe Carriage](./kageurufu/mgn12-euclid) | A MGN-12 carriage with an inset mount for a Euclid Probe | :x: | :heavy_check_mark: | :heavy_check_mark: | :grey_question: | :heavy_check_mark: |
 | KenadyDwag44 | [Switchwire Lightbar](./KenadyDwag44/sw_lightbar) | A LED lightbar for switchwire | :x: | :x: | :x: | :heavy_check_mark: |
 | KevinAkaSam | [VEFACH](./KevinAkaSam/VEFACH) | Voron Exhaust Filter Inserts for Activated Coal + Hepa | :x: | :grey_question: | :heavy_check_mark: | :x: |
 | Khay | [V0 Micro Backplate](./khay/micro_backplate) | Minimalistic backplate for cooler motors and electronics | :heavy_check_mark: | :x: | :x: | :x: | :x: |

printer_mods/kageurufu/mgn12-euclid/README.md

@@ -0,0 +1,27 @@
+Afterburner MGN12 Carriage with Integrated Euclid Probe
+=======================================================
+
+Euclid Probe by [nionio6915 (Github)](https://github.com/nionio6915/Euclid_Probe), https://www.euclidprobe.com/
+
+![Printed mount](./Images/real-bottomview.jpg)
+
+This is a modified version of the MGN12 carriage for a Voron Trident or modded Voron 2.4 with a cutout for mounting the upper Euclid PCB. 
+
+![CAD view of the Euclid Probe embedded in the carriage](Images/CAD-bottomview.png)
+
+Other than requiring a Euclid Probe, the only additional parts needed for the MGN12 carriage are two M3 heatset inserts for mounting the upper PCB. 
+
+When installed, the Euclid's magnets should barely protrude from the bottom of the carriage.
+
+![Front view, showing magnets](./Images/CAD-frontview.png)
+
+The JST connector should be easily accessible from above
+
+![Front view, printed](./Images/real-frontview.jpg)
+
+### Probe Dock
+
+The Euclid Probe project has Voron docks available on 
+[euclidprobe.com](https://www.euclidprobe.com/02-probe-docks-toolboard-mounts/), under "Mounts & Docks by Printers" > "Voron 2.4 / Voron Trident"
+
+The available docks mount to the bed rails, removing the probe from the motion plane after moving up in the Z axis. Adjustment should be performed to move the dock along your maximum Y position to avoid errant pickups as much as possible.