STM32F401CCU6 core board V3.0

Freq. 84Mhz ROM:64KB RAM:256KB

25MHZ high speed crystal oscillator & 32.768Khz 6PF low speed crystal oscillator

V3.0 version began to use lead-free process, the pin header is gold-plated pin header, more environmentally friendly

Flash pads have been reserved and USBDisk && FATFFS routines are provided

WeAct HID FW Bootloader has been burned out of the factory. It is a special factory test version, and hex is not provided.

Support MicroPython programming, provide available MicroPython firmware, see the link for configuration files, but do not provide technical answers!

Support Arduino programming, see Github //github.com/stm32duino/Arduino_Core_STM32 for details

Boards with version V1.3 and above have 3 buttons, reset button, BOOT0 button, and user buttons.

How to enter ISP mode

Method 1: Press and hold the BOOT0 button and the reset button under the power-on state, then release the reset button, and release the BOOT0 button after 0.5 seconds

Method 2: Hold down the BOOT0 key when power is off, and release the BOOT0 key 0.5S after power on

DFU mode: just use the data cable to connect to the computer, if there is a problem of unrecognized, you can properly heat the chip (25 ° C), and then re-enter the ISP mode

Serial port mode: use USB to serial port to connect PA9 and PA10 of the core board

Software: STM32CubeProg.

WeAct HID FW Bootloader

No need for USB to serial port, no debugger, no computer driver, just a TYPE-C data cable to complete the firmware download

For details, see Code Cloud / Soft / WeAct HID FW Bootloader /

How to enter HID Bootloader after writing to APP

Press and hold the KEY button, click the reset button, LED C13 flashes, release the KEY button to enter