PCB Light Painting-Personal Reproduction Optimized Version

Engineering creativity originally from https://oshwhub.com/qazwsx1987/dengguanghua_0
The original artist of the light painting is Hwang Seontae
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Thanks to the original author for his excellent creativity, we have made the following improvements based on the original author:
1. Change the single board design to two boards stacked Design, the pattern can be easily changed later without modifying the circuit
2. After changing to a stack, the distance between the LED light and the pattern is increased, and a soft light plate can make the light softer, and the light spot is basically invisible.
3. Adjusted The two screw holes on the lower side make it easy to use copper posts as feet.
4. The front and rear panels are connected using patch connectors, so there are no openings on the front, making it more beautiful.
5. Replace the filament switch with two MOSFETs connected in parallel and widen the wiring. The continuous operating temperature tested by thermal imaging is about 42 degrees.
6. Add 500ma self-recovery insurance
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Existing problems and next steps for improvement:
1. The resistance of the filament current-limiting resistor is too small. It is recommended to install 51R. At this time, the filament current is about 40ma.
2. 0603 should not be used for the filament current limiting resistor package. Currently, the heat is obvious. The next version will be replaced with 1206 package.
3. Light leaks around after it is turned on. The next version plans to use a 3D printed shell to block light
. 4. Because the panel area is too large , the touch is a bit too sensitive, and there is currently no good solution.
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2023.6 .20 update, renderings of the other two light panels in the project
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Updated on 2023.6.21, the new version of the project is in progress, and the PCB has been drawn.
Added two-tone lighting function, battery charging function, 3D printing shell
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Updated on 2023.7.10, the new version of the project is released, please move to the address:
https://oshwhub.com/xiaofangs/pcb-deng-guang-hua-zhong-ji-jia -qiang-ban-pro