STM32 development board designed for the ST official tool STM32F4DISCOVERY, and integrates various standard interfaces, pretty easy for peripheral expansions.
The Open407V-D supports further expansion with various optional accessory boards for specific application. The modular and open design makes it the ideal for starting application development with STM32F4 series microcontrollers.

Open407V-D development board

Open407V-D development board back view

Connecting to J-Link

Connecting to various peripherals

STM32 Cortex-M4 MCU board

STM32 Cortex-M4 MCU board

STM32 Cortex-M4 MCU board

STM32 Cortex-M4 MCU board

Open407V-D μC/OS-II (Ⅰ)

Open407V-D μC/OS-II (Ⅱ)

Open407V-D μC/OS-II (Ⅲ)

Open407V-D μC/OS-II (Ⅳ)

Connecting to USB3300 USB HS Board

Connecting to UDA1380 Board

Connecting to OV7670 Camera Board

Connecting to RS232 Board

Connecting to RS485 Board

Connecting to USB UART Board

Connecting to CAN Board

Connecting to 8 Push Buttons

Connecting to 5 IO Keypad

Connecting to AD Keypad

Test Board on the AD/DA port

Connecting to FRAM Board

Multi I2C peripheral Module connected to the I2C bus

Connecting to DataFlash Board

Connecting to VS1003B MP3 Board

Connecting to NRF24L01 RF Board

Connecting to Micro SD Storage Board

Connecting to NandFlash Board

Connecting to Ethernet Board

Connecting to any accessory board you need