Azure Archive Halo Night Light

Inspired by the halo design of characters in *The Blue Archives*,
this PCB only includes LEDs, excluding driver circuits and other components.
It mounts 36 0805 SMD LEDs. LEDs are directional; carefully check the arrows at the bottom before soldering! Inverted soldering will prevent lighting!
The dimensions are controlled within 99.3mm*99.3mm; this can be done for free.
 
Advance planning/purchase: acrylic supports, base plate, 0805 SMD ice-blue LEDs, suitable power supply solution
, and after soldering, there are two pads on the back of the board marked with positive and negative terminals; connect directly to the positive and negative terminals of the LEDs. Never connect directly to a 5V power supply, otherwise it may cause overcurrent and burn out the LEDs! I used a readily available LM2596 adjustable step-down module; it can also be used with two strings of dry batteries or a stable 3.3V regulated power supply. Apply a layer of hot melt adhesive above the LEDs to act as a light guide.
It is recommended to use thinner wires or enameled wire to make the halo appear to float (consistent with the original work).
Then, use hot melt glue to fix it to the acrylic pillar, and the other end to the base. I used a 2mm diameter acrylic pillar and a 100*100mm, 0.5mm thick acrylic sheet as the base. I also fixed the power module there as well. The finished product is shown in the picture.
You can first disconnect the LED wiring and adjust the adjustable step-down module to the lowest voltage. Connect the LED and slowly adjust the potentiometer until the LED lights up to the desired brightness. Excessive current may burn out the LED.
The final effect is as follows
. More ways to play:
This product is just a light board; it can also be connected to a microcontroller to achieve network connectivity and even voice control (it requires a transistor/MOSFET, as the microcontroller pins cannot handle such a large current).
In *Azure Archives*, there is also the following setting regarding character auras:
  when a character is asleep or unconscious, the aura will temporarily hide.
You can use a USB extension cable to connect this light to a computer so that the aura turns off when the computer is turned off.
This project is open source; interested friends can create or modify it themselves.
Demo video: https://www.bilibili.com/video/BV1Zx4y1q7aC/