PT4115 + 5730 + aluminum substrate dimmable (full verification completed)

I plan to change the voltage of all the lamps in my room https://oshwhub.com/gamefunc/my_room_ctl to a safe voltage of <36V when I have time.
When I was setting up my room, I didn't know that I could get it for free from LiChuang. The standard of the ones I bought from Taobao was 220V, which was converted internally, so the wiring was 220v, and the relay was used as the switch .
Now LiChuang aluminum substrates are free for proofing, so there is no reason not to do it myself; 
do it yourself and meet your own requirements: 
  1: The lamp wiring is <36V and buy as big as possible;
  2: The brightness can be adjusted by the microcontroller;
 
because I don't want to waste money, I buy finished power supplies directly.
The finished power supply from Delta meets the requirements and the price is right. It is 19V (it is much more expensive than 19V), so I made it 19V. It happens that my MLCC 22UF has a withstand voltage of only 25V.
If it is 19V, I have already run 0.5 square lines for 10 meters, and the voltage drop of 5A is 1.8V. It is 15V for 4 arrays of LEDs. Acceptable range; if you are not short of money, you can buy 28V,
but don't exceed 28V, because PT4115 only supports 30V at most; at the same time, if > 23V, it is recommended to buy 50V MLCC .
I don't know if there are 22UF 50V 20V 25V for sale. If not    , add a few 10UF
50V 20V    25 ...