Touch dimming light bulb (based on 8022W solution + 26mm LED filament)

2022-07-30 Normal version verified successfully√
 
2023-05-29 Version with backplane verified successfully√
 
2023-06-02 Updated to the latest version
The PCB directly above the back of the PCB touch point is hollowed out and no copper is laid, which is left when the Demo stage is cancelled. The CASE-B tantalum capacitor
still retains the first version of the PCB in the Demo stage for verification testing and souvenirs (just print the latest PCB without special circumstances),
optimize the schematic, layout, silk screen, and rename
 
the 2023-06-17 aluminum substrate version Verification successful √
All PCBs in this project are in normal use. If you don’t understand or encounter difficulties during proofing and welding
 
, please go to the comment area at the end of the article to communicate.
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I have a wave of domestic fakes at hand. SGL8022W has poor stability, yield, and anti-interference. It often turns on and off or adjusts the brightness by itself when no one touches it.
The car has overturned, avoid the pit! Just buy the cheaper JL8022W (the actual test is very good), or if you have money, just buy the real original one. . .
The chip manual and demonstration video have been updated, please see the attachment at the end of the article for details.
 
 
Just an old low-current 5V USB charger is enough,
and it can be plugged into any USB location (such as laptops, desktops, servers, routers, IP phones, etc., as long as it is USB), and it is
very suitable for home use or taking out. It is convenient and
can be used to directly use your own circuit to secondary design a better-looking appearance.
It can also be used for novices to learn principles and welding skills.
The design is inspired by the shape of the classic incandescent light bulb. The tilted layout of the LED filament is also derived from the internal filament of the incandescent light bulb. The shape of "W" is as bright as a 40W incandescent lamp, and it will not be hot when working for a long time.
There are many different color filaments available, which can also be mixed and matched. It looks very good with the corresponding color solder resist PCB.
 
Note: When welding the filament, the pins on the The side of the small hole corresponds to the side of the PCB solder mask with dots.