4"x4" Plexiglass Photo Frame WLED Base

Created this simple, 2-part design for illuminating IMAX film cells in plexiglass frames purchased from the jungle website. Designed around 12mm wide WLED strips for extra effects when not directly viewing, but ultimately compatible with other 12mm wide LED strips. Chain multiple frame bases together for synchronized WLED effects!

Components

Frames purchased:
4 x 4 Inches Acrylic Picture Frame, double-sided with magnets. One side of the protective plastic was left on to provide a nice diffusion behind the film cells. 
https://www.amazon.com/dp/B09XML59WF

LEDs purchased:
12mm Wide, 144 LEDs/Meter, IP30 (bare PCB w/ LEDs). As of writing this, the IP30 version of this specific strip appears to be unavailable, but IP65 should work.
https://www.amazon.com/dp/B0CN6D7SPZ

(Optional) JST Connector Kit:
3-pin JST Plugs/Jacks used for clean connections and custom-length jumper cables between bases. Alternatively, bases can be hard-wired together without the need for these parts.
https://www.amazon.com/dp/B0C6PM9KGY

(Optional) 3 or 4 conductor, 22-26 AWG Cable:
26AWG multi-core cable is recommended for the jumpers between frames. This can ultimately be larger but isn't necessary. 26AWG conductors will also work for wiring inside of the frames, though smaller conductors will make wiring easier. Reference images were wired with 2x 30AWG stranded conductors per terminal.
https://www.amazon.com/dp/B0CW1DG1TF 

LED or WLED controller - select an LED controller compatible with your desired LED strips.

Printing & Assembly

Both components are printed in their default orientations, with automatic tree supports on build plate only and a threshold angle of 30-degree. 0.2mm layer height, 3 wall loops and gyroid infill at 7%. Top shell layers set to 4 to add extra strength.

Wiring Colors and Pinout used in this build:
Male JST (looking at pins, pin one being left, pin three being right)
Pin 1: Ground (Internal Green, Jumper Black)
Pin 2: Data (Internal Blue, Jumper White)
Pin 3: Positive (Internal Orange, Jumper Red)

If direct-wiring instead of using JST connectors, skip steps 3, 4, and 8.

1. Cut LED strip to length, leaving enough solder pad on each end to comfortably solder to.

2. Stick LED strip to base component, ensuring there are no overhangs as that will interfere with the top component. Strips used in the example build are directional, and are placed with the arrows pointing right.

3. Prepare Male 3-pin JST connectors by soldering short lengths of wire onto each of the three pins. If available, add small cuts of heatshrink to protech terminations. Wire all JST connectors the same to avoid confusion. See reference section above for the pinout and wire colors used in this build.

4. Test fit Male JST connectors into the base component, passing wiring through the small channel in the middle. These should sit flush with the rear of the base. If fitment is acceptable, add a dab of superglue to the short sides of the JST.
   *Note: Adding superglue to the top of the JST (with the slots) will cause issues with mating later on.

5. Trim wires to length, and solder to the pads on the LED strips. Define a standard color code to use across modules.
   WLED strips in part list have 4 solder pads, but only need three. Outside pads are for power, inside pads are for data. Only one data pad is needed for these strips to work properly.

6. Tuck excess wire into channel. In order for the top component to sit properly, excess wire will need to sit fully in the channel below the LED strips.

7. Place top component on bottom component. It should fit well enough to not move when picked up, and should be flush on the bottom. 
   If fitment is not flush, check support interface areas.

8. Create jumpers using the multi-core cable, and Female 3-pin JST connectors. The pinout for the female connectors will be "reversed" compared to the male connectors. Looking at the socket side of the connector, pin 1 is right, pin 3 is left.

9. Connect to your WLED controller and configure segments.

10. Enjoy!

Thank you for reading! Please feel free to ask questions or report any issues you run into.