STM32F407ZGT6(ZET6) ColorSilk Screen Development Board (verified)

System board designed based on stm32f407zgt6 (compatible with stm32f407zet6) main control chip.

The system board integrates

One dcdc step-down of tps5450 (maximum 35V input-5V/5A output), and one TYPE-A port is reserved as the power supply port for Raspberry Pi (5V/3A).

One AMS1117-3.3 LDO step-down (5V input-3.3V/1A output) is used to power the chip.

FLASH chip: W25Q128  

EEPROM chip: AT24C02

Serial to ttl: CH340N (TYPE-C)

As well as four buttons and an LED light (functional verification), and an interface for the 2.4-inch spi touch screen module is reserved.

The design is based on the theme of White-faced Owl + Rhine Life and adds JLC colorsilk screen technology (the design is very ugly, please feel free to scold me)

All IO ports are lead out (including pre-occupied pins), and the working status of FLASH and EEPROM chips can be adjusted through an 8-bit DIP switch.

All functions except the 2.4-inch screen module have been verified and are running normally.

The layout of the power supply part is very dense. It is too painful to solder it by hand with a soldering iron (vomiting blood). If you can, don't solder it by hand or just don't solder the tps5450 at all. It's too uncomfortable.

Don't use multiple channels for power supply. If TYPEC is plugged in for power supply, don’t supply power to other ports.