Portable fill light

The project required me
to design a supplementary lighting system because my daily maintenance lighting was too dim and caused dry eyes after prolonged use. To address this, I added two 20*20mm turbine fans for active cooling to ensure stable operation without light decay. I also designed two versions to suit different battery life requirements. One version uses an 18650 battery and can achieve around 7000mAh, but is larger. I personally prefer the version with two polymer cells connected in parallel, which is smaller and more portable. Note that the FPC socket on the PCB board in this project is reversed compared to the board shown in the video, so the lamp board orientation is opposite to that in the video. If you insist on a correct orientation, you can use a longer ribbon cable.
The schematic design describes
the LGS6303X as a boost DC-DC LED driver chip with integrated power switching. It has a wide input voltage range of 3V to 60V and integrates soft start, minimizing the need for external surge suppression components, making it ideal for wide input power range LED drivers. The output current can be adjusted via an external resistor. Featuring an integrated 350mΩ power switch, it provides at least 1.5A of peak input current capability and exhibits excellent load and line transient response. It features a SKIP control mode, combining low quiescent current with high switching frequency for high efficiency over a wide load current range. The lighting driver uses the LGS63032 boost converter chip, with an input voltage of 2-60V for the LEDs. The 24V input voltage should be adjusted according to the datasheet's specifications. The specific formula is shown below. The diagram below
shows a typical application circuit.
Note that the chip can only provide a maximum input current of 1.5A, so the LED selection must strictly adhere to the required power; otherwise, it may cause damage due to exceeding the power limit. Only 16 0.5W LEDs can be installed, 8 per channel. 0.1W and 0.2W LEDs can be fully installed. Inductor selection must be based on actual testing by a reputable manufacturer; some manufacturers misrepresent current ratings, which can lead to severe overheating. 1N5819 diodes are sufficient; the diodes shown in the schematic may not be compatible. The
 
charging/discharging chip should be an I... However, the P5306 chip might not work if purchased from Taobao because the button pins and light control pins of the P5306 are connected together. Therefore, double-clicking to power on might simultaneously shut down the P5306 output. You can purchase a custom 5V continuous output version. I bought a module directly from this seller and disassembled the chip. The
PCB design instructions
are as follows: The PCB has been verified and works normally. I'm a circuit novice; if any experts think it can be optimized, I can create a new version.
The software instructions are
as follows: The program here isn't difficult, just the logic is relatively complex. You can modify it according to your needs, such as adding a strobe function and SOS, etc.
The program logic is as follows:
LED fill light source code [Github] Please give it a star, thank you~~~
Physical demonstration and instructions:
 
The ribbon cable can be installed according to the direction in the picture. The same applies to the light board.
 
When installing the knurled nuts around the diffuser, control the temperature and time, as this part is relatively thin and easily damaged by heat.
 
The heat sink is powered by 5V. The
 
heat sink should be purchased in this size.
Precautions:
Pay attention to the orientation when soldering the battery. Also, because the two pins are too close, be careful when soldering. Short the two ends of the battery with the
soldering iron tip. Also, the battery's built-in protection board is not very reliable. If the output voltage drop is too large, the battery output will cut off prematurely. Therefore, you can choose not to add a protection board or replace it with a different model. Demo video:
If you are interested, you can directly search Aloser21 on Bilibili to watch the complete tutorial video
[(Open Source) High Color Rendering, High Brightness Portable Fill Light]