【Creative PCB】Shine in China

Electronic mooncake ornaments for the 72nd National Day anniversary, Tiananmen pattern, mooncake shape, equipped with 3D printed shell, shining 72 LEDs to represent the 72nd National Day, controlled by microcontroller, showing fireworks light effects, etc. The MCU chip is placed at the Tiananmen Gate, symbolizing its importance. On the 72nd anniversary of the founding of the People's Republic of China, I would like to dedicate this to our great motherland! Advantages: STC15W408AS-SOP16 is used, and the other chips are also common types. The components are cheap, and the 0603 package is easy to operate. The total cost excluding the shell and PCB is less than 15, which is suitable for novices (after all, I am also a rookie). Details: The code part can be used as a reference. You can modify it according to your own ideas. The basic principle is to scan and output LEDs with a cycle of 8ms (1ms*8). The LED number can be confirmed by comparing the PCB and schematic diagram. PS: In the PCB, at the G+ and Q+ silk screen locations, the pin headers are connected with jumper caps. The original design was to connect them together, but the power supply was insufficient during programming. After modification, G+ and Q+ were disconnected during programming, and G+, -, TXD, and RXD were used for programming. Because I have only been exposed to microcontrollers for more than three months now, most of the design parts are based on the development board. Don't complain if you don't like it.