Merge pull request #22 from harry-boe/main

Initial load pull request

Mods/hbo/README.md

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+# Collection of Tri-Zero Skirts
+
+This is a Collection of skirts for the try-zero with some additional features.
+
+![Printed Panel](Images/tri-zero-skirt.png)
+
+Right now, there are 2 variations for the skirts and one common rear and common fan mounts.
+To start with the rear ..
+
+## Rear Skirts
+
+![Printed Panel](Images/tri-zero-rear.png)
+
+The rear skirts match all the different front skirts and have the following features
+
+- integrated power inlet mount. To be used with the "standard" v0 power inlet
+- 2 keystone mount points to get access to the raspberry pi ports
+- Bowden clip mount point. Designed for the E3D style bowden clips. This allows to push the filament and not the tube from the outside. Read for the ERCF :)
+
+![Printed Panel](Images/tri-zero-rear-details.png)
+
+
+## Fan Mounts
+
+Option: The fan mounts have clips to hold 40x10mm or 40x20mm fans.
+If you go with a 20mm fan make sure to order one with a central rib, like the fans from creality.
+
+![Printed Panel](Images/tri-zero-fans.png)
+
+# Skirt Options
+
+The front skirts are designed for Nema 17 motors up to a max size of 39 mm in length.
+
+Note that there are two front covers for the GT2 pulleys. One for NEMA's with a shaft of 20mm and one for NEMA's with a 24 mm shaft.
+
+## 1. Headless
+
+This version is intended for users that like to run the tri-zero in headless mode i.e. without display
+
+![Printed Panel](Images/tri-zero-headless.png)
+
+## 2. Waveshare 4.3" Display
+
+This version is designed for the Waveshare 4.3inch Capacitive Touch Display for Raspberry Pi, DSI Interface
+The mounts are designed to bolt on the frame and display with original screws from the back.
+Therefore similar 4.3 inch display might not work without modifications
+I'm using a 60cm DSI cable to connect the display with a Raspberry PI back on the back of the V0 
+(a Raspberry Pico mount mod is in preparation)
+
+![Printed Panel](Images/tri-zero-waveshare.png)
+
+### Reset / Emergency switch
+The front display mount also provide a mounting option for a reset or emergency switch.
+I'm using this switch to reset a BTT PSU relays. 
+
+The switch in the cad is a standard 7mm momentary switch that is easy to source even from local providers.
+Make sure to get a Normaly OPEN (NO) switch if you plan to use it with the BTT PSU Relays.
+(A Relays mount and firmware configs are in preparation)
+
+![Printed Panel](Images/reset-switch.png)
+
+# Printing
+
+This mod is based on my design for the V0 and Double Dragon / Wasp printer.
+The core design went to many iterations (and spools of filament) to optimize printability and tolerances for keystones, power inlets etc.
+
+I printed the motor corners to check the design but I have not yet built a printer with them. So please provide feedback if you run into issues or confirm the design.
+
+All parts print with standard Voron print setting without any supports.
+All parts fit on a V0. However, the max out the build volume on the z axis.
+If you need to print on a V0 make sure that your bed springs are really stiff by adding more tension with washers etc.
+I had some problems getting nice parts out of the V0 due to the nozzle moving the part due to flex on the bed springs.
+
+# BOM Notes
+
+Recommended Nema 17 Motor: https://www.omc-stepperonline.com/de/nema-17-bipolar-1-8deg-26ncm-0-4a-0-4a-12v-42x42x34mm-4-draehte-17hs13-0404s1
+
+Waveshare Display:  https://www.waveshare.com/4.3inch-dsi-lcd.htm
+
+Rubber Feet: There are many options. The one in the CAD are these ones here https://de.aliexpress.com/item/1005004478863418.html
+
+7mm Momentary switch:  https://de.aliexpress.com/i/32711341102.html
+
+40x20mm fan:    https://de.aliexpress.com/item/1005002920453385.html
+
+# CAD  Notes
+
+The CAD includes all variants in one file.
+You need to show/hide the version you like to work with
+
+# Credits
+
+Thanks to zruncho for all his efforts he puts into the printers for Ants.
+It's inspiring for a lot of us!
+