Adafruit NeoPixel mounts for V0 (#388)

* Initial commit

* Address comments in PR #388

printer_mods/QuackProfit/V0-Adafruit-Y_Rails/README.md

@@ -0,0 +1,62 @@
+# Mount Adafruit NeoPixel Sticks on the V0 Y-rail Extrusions
+* Add controllable RGB(W) LEDs to your V0
+* No heatset inserts required
+* Compatible with [NeoPixel Sticks](https://www.adafruit.com/product/1426) from Adafruit
+* Large cavity inside the body makes wire management easier
+* Light guides prevent LEDs from blinding you
+* Designed with [Timmit99's V0 Umbilical](https://github.com/timmit99/Voron-Hardware/tree/V0-Umbilical/V0-Umbilical) in mind (not required)
+
+![Design](images/design.jpg)
+
+_Inspired by the mod [from JNP](https://github.com/VoronDesign/VoronUsers/tree/master/printer_mods/JNP/Neopixel-Y_Rails)_
+
+## BOM
+* Printed parts
+* (2) [Adafruit NeoPixel Stick](https://www.adafruit.com/product/1426)
+* (8) M2x6 flat head - to mount covers
+* (4) M2x8 SHCS/BHCS - to mount the PCBs
+* (4) M3x6 SHCS/BHCS - to mount the assemblies to the Y-rail extrusions
+* (4) M3 nuts - to mount the assemblies to the Y-rail extrusions
+* (2) JST-XH connector plug 4-position - to allow for easy disconnection (optional)
+* 22awg wire
+
+## Assembly
+* Solder wires of appropriate length onto the back of each PCB (VDC, GND, DIN, and DOUT)
+* If using JST-XH as disconnects, solder the other ends of the wires to 4-position (male) connectors - the connector should fit inside the body cavity once assembled
+* Mount the PCBs inside the printed bodies using M2x8s
+* Don't install the printed covers at this stage
+
+![Wired](images/wired.jpg)
+
+## Installation
+* Insert 2x M3 nuts on the bottom side of each Y-rail extrusion - requires partial frame disassembly if already assembled
+* For the wire path, you have two choices:
+  * Drill 1/4" holes in the midpanel where the printed bodies comes into contact with the midpanel and route the wires through that
+  * Route the wires through the opening on the "top" of the printed body, through the slot of the extrusion, and over the midpanel
+* Install the printed and assembled body to the Y-rail extrusions using 2x M3x6s and the previously inserted M3 nuts
+* Route wires and fold excess wire inside the body cavity (see wiring below)
+* Install the printed covers using 4x M2x6 flatheads (SHCS/BHCS might also work - *check clearance with the gantry* )
+
+![Installed](images/installed.jpg)
+
+## Wiring
+* If using [Timmit99's V0 Umbilical](https://github.com/timmit99/Voron-Hardware/tree/V0-Umbilical/V0-Umbilical) create JST-XH jumpers that route between the left and right connectors on the Umbilical Frame PCB and the printed assemblies
+  * Pay attention to pin ordering!
+* If connecting directly to a compatible Controller you have to chain the data signal between the left and right assemblies
+  * Choose either the left or right assembly to be the first in the chain
+  * The Controller's neopixel data output pin will connect to the DIN of that "first" assembly
+  * The DOUT of the "first assembly" must connect to the DIN of the "second" assembly
+  * VDC and GND of both assemblies must be connected to the Controller's neopixel VDC and GND pins
+* Some Controller boards (e.g. SKR) require a capacitor and resistor - [SKR Neopixel Breakout Board](https://github.com/codiac2600/Neopixel-Breakout-Board) [link1](https://www.printedsolid.com/products/skr-neopixel-breakout-board) [link2](https://sparta3d.ca/products/ldo-skr-neopixel-breakout-board)
+
+## Klipper Config
+* Create a "neopixel" section in printer.cfg and give it a name
+* Refer to your Controller documentation to find the pin name that controls the neopixel data signal
+* Example:
+```
+[neopixel lights]
+pin: PA8
+chain_count: 16
+color_order: GRB
+```
+* Refer to [Klipper](https://www.klipper3d.org/Config_Reference.html#neopixel) for more information

printer_mods/README.md

@@ -193,6 +193,7 @@ like so:
 |Phalanx |["Other" Idlers Mod](./Phalanx/Other-V2-Idlers/) | Allow usage of wider toolheads on the V2 |:x: |:grey_question: |:heavy_check_mark: |:x:|
 |piet206 |[V1.8 Z Rails Mod](./piet206/V1.8._Z_Rails_Mod) | Add MGN12H linear rails for Z axis motion |:x: |:heavy_check_mark: |:x: |:x:|
 | Printopal | [Magnetic top panel](Printopal/Magnetic_top_panel) | Top panel with magnets allows for quick installation and removal | :x: | :heavy_check_mark:| :heavy_check_mark: | :x: | 
+|QuackProfit|[V0 Adafruit NeoPixel LED Mounts](./QuackProfit/V0-Adafruit-Y_Rails) | Mount Adafruit PCB NeoPixel Sticks on the V0 Y-rail extrusions | :heavy_check_mark:|:x:|:x:|:x:|
 |randell   |[Door Hinges](./randell/Door_Hinges) |Door hinges that use an M3 bolt for a pin and bolts thru the panel |:x: |:x: |:heavy_check_mark: |:x:|
 ||[Microswitch Pod for PCB](./randell/Microswitch_Endstop) |Modified endstop pod for use of endstop switches mounted on a PCB |:x: |:x: |:heavy_check_mark: |:x:|
 | raymondh | [Large Spool Holders](./raymondh/LargeSpoolHolders) | Larger spool holders for KVP spools | :x: | :heavy_check_mark: | :heavy_check_mark: |:x:|