STM32F4DISCOVERY

    STM32F407VGT6 microcontroller featuring 32-bit ARM Cortex-M4F core
    1 MB Flash, 192 KB RAM in an LQFP100 package
    On-board ST-LINK/V2 with selection mode switch to use the kit as a standalone ST-LINK/V2 (with SWD connector for programming and debugging)
    Board power supply: through USB bus or from an external 5 V supply voltage
    External application power supply: 3 V and 5 V
    LIS302DL or LIS3DSH ST MEMS 3-axis accelerometer
    MP45DT02, ST MEMS audio sensor, omni-directional digital microphone
    CS43L22, audio DAC with integrated class D speaker driver
    Eight LEDs:
    LD1 (red/green) for USB communication
    LD2 (red) for 3.3 V power on
    Four user LEDs, LD3 (orange), LD4 (green), LD5 (red) and LD6 (blue)
    2 USB OTG LEDs LD7 (green) VBus and LD8 (red) over-current
    Two push buttons (user and reset)
    USB OTG FS with micro-AB connector
    Extension header for all LQFP100 I/Os for quick connection to prototyping board and easy probing