Compatibility Note: This bracket is for the Kamvas 13(may work with Kamvas 12) display tablet from Huion. The bracket assumes you are using the USB cable and USB connectors listed below. If you are using the full featured, all-in-one USB cable from Huion… it won't work with this bracket without changes to the bracket. This will also not work with a straight cable plugged into the port. The stylus holder holds the PW517 stylus that comes with the tablet.

Print Settings Note:

• Printed using Bambulab Basic Black PLA
• Bambulabs P1S printer
• 0.08mm High Quality setting
• Supports on the 45° angle surface manually painted using “Tree Manual” mode and using “Tree Organic” setting.
• No Prime Tower.
• 5mm forced brim.

I recently bought a Huion Kamvas 13 display tablet. Love it. However, what I didn't love was the cable issue… ie, it was a major PITA to find a cable which would properly fit the USB-C port on the Kamvas 13 which also had the full featured wiring for the USB, DisplayPort, power, etc. Most cable shrouds were just too big. The only cables that would reliably fit were those sold by Huion itself, power-only USBC cables, or the thunderbolt cables sold by apple that conforms to the Apple MFI specifications.

I went on Amazon and looked for various options that would be cheaper… and came across a few items, thought the resulting dimensions were not ideal. Here are the specific items I purchased(links to amazon, no affiliate tokens or links). Naturally, if you use different parts… you will need to adjust the design of the bracket accordingly. 

* Right Angle USB-C full pinout adapter (https://www.amazon.com/dp/B09MVRNCVZ)
* Straight through USB-C full pinout adapter with tapered/reduced shroud on the male side. (https://www.amazon.com/dp/B07MBWH7QG)
* 2m full featured 40gbps, 4K hd USBC cable. (https://www.amazon.com/dp/B0CJNXQZ81)

The resulting combination of the straight through and the right angle adapters looks like:

Which obviously juts out quite precariously. Even removing the right angle connector and going straight out is also quite precariously leveraged.

So I wanted to create a bracket to provide reinforcement. The first ones were loose or just provided a ledge for the cable to rest on. Later versions tightened up the design so that the cable and plug were more constrained and there was more of a ledge/lip to ensure a good connection point to the tablet. Finally, added a bit of tolerance so that 2 sided tape(3M, nitto, etc) could be used to hold it semi-permanently to the tablet as if it was a part of the tablet.

Note, the flat mating surfaces of the two halves are held together with Nitto tape as well. That way it can be disassembled and replaced at a later date. 

 

I figured since this was going to be a big bulky anyways, I added a slot to hold the stylus. The textured surface comes from the textured print bed. The angle of the edge over the tablet are 45°

Design Goals:

• Provide protection to the USB port of the display tablet
  • Need to prevent flex and/or misalignment
• Provide protection and support for the USB adapters and cables
  • Need to prevent bending, twisting, etc.
• Prevent accidental disconnect between tablet, cable, and computer.
  • Need to prevent pulling out of tablet and cable pulling out of adapters
• Provide a transitional surface between tablet and the bracket itself.
  • Need to provide an angled surface vs a hard 90° surface
  • Tried 30° surface, but that resulted in a much larger ledge, so went with 45° angled surface
• Provide a place to hold the stylus ( loose if buttons facing out, self-holding if buttons facing in )
  • Channel made by modelling a stylus, scaling it up a bit, and using it as the boolean negation to the block.
  • The channel for the body runs close to the channel for the USB port, this greatly reduced the thickness that would have been needed otherwise.
  • Designed with track for buttons for easy removal, but also for retention of the stylus with the buttons opposite of the channel.
• Prevent the cable from being pulled out from the bracket and the adapters
  • Earlier designs, the cable itself can be pulled out from the bracket and the adapters. Narrowed the channel behind the plug to accomodate the thickness of the cable, but not the plug, this prevents cable removal.
• Look “nice”
  • Went with black to keep with the muted design of the Huion tablets.
  • Went with braided cable. Looks nice and also lasts longer.
  • Enclosed the entirety of the adapters and plug to provide a simpler look
  • Considered rounding out the outer edge/corners, but with supports, would have greatly increased the printing time. Something to consider for the future.

Future Design Goals:

• Make design compatible with straight through cable and the close-to-body right angle adapter cable sold by Huion
• Make the bracket customizable(this would require openscad/etc.)
• Make the design more compact
• Remove all sharp or hard edge/corners
• Some other functionality? Maybe a holder for nibs and other tools?
• Maybe a place to wind up the cable?
• Maybe incorporate a tablet stand?