Fancy snowflake lantern decoration

The main control chip uses STC15W408AS-QFN28, which uses 18 IO ports to control 30 LEDs. There are no other peripheral devices. The PCB has a base, a fixed welding position and a farad capacitor position are reserved, and a supercapacitor can be added as needed. See the attachment for the program, capable experts can modify it and add a few more animation effects.

It should be noted that when breaking off the PCB, you must first use a knife to cut along the two through holes. The four fixing feet on the bottom have specific functions and cannot be soldered upside down. Make sure that the USB socket and the chip are on the same side, and the USB socket and the chip must be on the same side. On the same side, the USB socket and the chip should be on the same side . It is recommended to use 502 to stick it after soldering. After all, the fixing strength of solder is not very high. As shown in the picture:

Because the PCB is too small, only four test points are left on the front for downloading the program. You can do this like me

Now that you’ve seen the finished picture , why don’t you leave without giving it a thumbs up? (๑•ᴗ•๑)

Watch the video for the actual effect