Alternate power inlet housing for V0 (Astrodyne 082S or 082SM) (#366)

* Initial commit of all files

* Astrodyne 082S IEC 320 C14 Power Inlet Housing

* Astrodyne 082S IEC320/C14 Inlet Housing

* Astrodyne inlet: fix entry in printer_mods table

printer_mods/README.md

@@ -217,6 +217,7 @@ like so:
 | warriorofwire | [Slenderfan for Afterburner](./warriorofwire/slenderfan) | Lighter, quieter, smaller Afterburner | :x: | :x: | :heavy_check_mark: |:x:|
 | Weaslus | [Electronics Bay and Enclosure Seperator](./Weaslus/Electronics-Bay-Seperator) | Better enclose chamber and keep heat from electronics | :heavy_check_mark: | :x: | :x: |:x:|
 | Wile.e | [Deck Panel Support Clips](./wile-e1/Deck_Panel_Support_Clips) | Clips to help support lower deck panels to prevent (or fix) warping: | :grey_question: | :heavy_check_mark: | :heavy_check_mark: |:grey_question:|
+| wrez | [V0 Alternate IEC 320 C14 Power Inlet Housing](./wrez/astrodyne-inlet) | Drop in replacement for alternate-source power inlet if spec inlet is back-ordered | :heavy_check_mark: | :x: | :x: | :x: |
 | xbst_ | [PCB LED Holder](./xbst_/LED_Holder)| Very simple mount for some (?) PCB LED Bars | :x: |:heavy_check_mark: |:heavy_check_mark: |:x:|
 | | [DIN Mount Omron Relay](./xbst_/Omron_DIN_Mount)| A simple DIN rail mount for the BOM Relay | :x: | :heavy_check_mark: |:heavy_check_mark: |:x:|
 | | [DIN Mount Pi 4x Relay Board](./xbst_/Relay_DIN_Mount)| A simple DIN rail mount for the 4 channel relay board for Raspberry Pi | :x: | :heavy_check_mark: |:heavy_check_mark: |:x:|

printer_mods/wrez/astrodyne-inlet/README.md

@@ -0,0 +1,68 @@
+# Astrodyne IEC 320 C14 Power Inlet Housing for V0.1
+
+This mod is a replacement housing for the stock v0.1 power inlet, replacing the [Adam
+Tech
+IEC-GS-1-100](https://www.digikey.com/en/products/detail/adam-tech/IEC-GS-1-100/9831135)
+(which has been on back-order at Digikey for quite a while at the time of
+this writing) with an
+[Astrodyne
+082S/082SM](https://www.mouser.com/ProductDetail/astrodyne-tdi/082sm0150000/?qs=eP2BKZSCXI4KQZVxn1eqpw%3D%3D).
+
+![Assembled housing in place](./images/in-situ.jpg)
+
+![Part render](./images/power-inlet-astrodyne.png)
+
+![Assembly](./images/disassembled.jpg)
+
+![Front view](./images/front-view.jpg)
+
+![Rear view](./images/rear-view.jpg)
+
+## Printing notes
+
+Slice and print with standard Voron settings (ABS, 40% infill, 0.4mm line width,
+0.2mm layer height, 5 top/bottom layers, 4 walls) but there isn't a lot of
+surface area in contact with the bed so you may struggle with warping unless
+your first layer is dialed in perfectly (perhaps with a little extra squish).
+There is no shame in printing this part with a brim (I've not added any fillets
+to the front edge for precisely this reason).
+
+The [STL](./STLs/astrodyne-inlet.stl) should import into your slicer with the
+correct orientation. If not, ensure that the front (where the inlet is inserted)
+is face down on the bed.
+
+## Design and assembly notes
+
+This design should be a simple drop-in replacement of the stock parts, but it's
+secured at just two points: the heat-set insert in the side and the screw
+through the ear on the top. 
+
+I've used one fewer screw than the original part, but two screws on
+orthogonal faces are more than rigid enough in practice.
+
+If you've already inserted both M3 nuts, I'd recommend simply sliding one as far
+to the left as possible (as you face the back of the printer) and securing it
+with an M3 x 6mm screw. There will still be room for the other nut, and it beats
+having to disassemble the frame (or leaving an extra nut rattling around).
+
+The printed housing has a slightly larger panel cutout than called for in the
+[Astrodyne 082S/082SM
+datasheet](https://www.mouser.com/ProductDetail/astrodyne-tdi/082sm0150000/?qs=eP2BKZSCXI4KQZVxn1eqpw%3D%3D).
+I just guesstimated the amount of offsets to account for part shrinkage and
+printing tolerances, but my first print of the part worked perfectly: the
+power-inlet snapped into place with a quite satisfying click, and felt quite
+secure.
+
+## Disassembly
+
+No.
+
+[Just kidding. It _might_ be possible to sneak a couple of butter knives or
+narrow putty knives down the sides to release the clips, but I ended up just
+sawing off the test print I used to check the fit.]
+
+## Files
+
+- [STL](./STLs/astrodyne-inlet.stl)
+- [STEP file](./CAD/power-inlet-astrodyne.step)
+- [Fusion 360 design](./CAD/power-inlet-astrodyne.f3d)