• 3D Mesh Market
  • Print
  • Discover
    •  Login Signup

    Right Angle (USB) Adapter for Brother P-Touch Cube devices

    This is a right angle adapter to power my Brother PT-P300BT from the side instead of the back.

    Versions

    There are to and a half versions:

    • 1a. one with a plug and a similar socket on the side so the original cable can be used from the side
    • 1b. the same as 1a, but the internal wiring is switched, because a center-positive 9V DC power supply is way more common than the required center-negative
    • 2​. one with a DC boost/step-up converter (specifically a MT3608 module)

    Naming and Files

    • ..._dc.stl and ..._dc.step: Versions 1a and 1b
    • ..._usb.stl and ..._usb.step: Version 2
    • ... .FCStd: original CAD file (FreeCAD)

    Printing and Assembly

    1. Slice with the big flat face on the build plate, the model is optimized to be printed without support in this orientation
    2. I printed on an Ender 3 v2 with 0.16mm layer height
    3. (optional) Sanding and painting
    4. Shorten the long outer leg of the DC plug and solder wires to it
    5. Push wires through the DC plug hole and the wire channel directly following it
    6. Put the plug in the designated hole and push it in; use the soldering iron (max 220° on PLA) if neccessary
    7. (when using variant 1a or 1b) Put the DC socket in the designated hole and push it in; use the soldering iron if neccessary
    8. Solder the wires according to the power supply you are going to use; make sure the outer ring of the DC plug ends up being + and the center ends up being -
    9. (when using variant 2) Route the wires to not get stuck when putting the boost module in; put the boost module in afterwards
    10. Secure the socket/boost-module in the casing first using a press fit (might need to sand down the edges of the module), then by slight plastic welding

    Parts

    DC Plug (5.5×2.1mm) for both versions:

    DC Jack (5.5×2.1mm) for the DC versions (variants 1a and 1b):

    USB-DC boost module (MT3608) for the USB version (variant 2):

    I designed the USB version after those modules that have a large inductor (the part usually labelled with "220") with a smaller diameter (where you can see the copper wire) as opposed to the thinner, rectangular inductors.