Larduino UNO Mini

Since ATMEGA328P is rising, all boats are ridiculously expensive. I learned that LGT8F328P is compatible with ATMEGA328P, and I really want to try it (verified). Refer to Larduino UNO https://oshwhub.com/larduino/larduino         in Lichuang Kaiyuan Plaza , and combine it with your own aesthetics. The board was redrawn to make the aspect ratio of the board more beautiful. Since Shenzhen Jialichuang can now sample four-layer boards within 10x10cm for free and only four-layer boards can be sampled for free in one autumn, the board was painted into four layers. , to facilitate proofing and testing, after several modifications, it has become what it is now. Due to the skyrocketing price of CH340N, CH340G and CH340C are very cost-effective, so use CH340C or CH340G.

Use the PCB of CH340C and built-in crystal oscillator LGT8F328P (pictured above). If the MCU needs to use an external crystal oscillator, please solder the crystal oscillator and capacitor on the right side. If using CH340G, please solder the crystal oscillator and capacitor on the left side. Please note: After using CH340G or CH340C, you need to flash the bootloader that supports 115200 speed in order to use the onboard USB for normal communication. You can modify the official package or refer to (https://github.com/nulllaborg/arduino_nulllab).

Power on status

The attachment contains the shell printing file, BOM and how to use the Easy EDA export file to quickly generate a 3D model of the circuit board shell. Since I haven't been using the drawing board for a long time, it is inevitable that I have some shortcomings. I hope all the experts can give me some pointers. Thank you!

Lighting effect is pretty good