STMicro's Arduino-compatible STM32F7 Discovery Kit is an exciting development for DIY-ers ... an enhanced Cortex-M7 MCU, a hi-rez color LCD touch screen, and an Arduino Uno-compatible expansion ...

Funnyvale explains : “This is a perfect little kit that let you create your own Arduino compatible board. In essence, it is similar to an Arduino Uno but with extra space to add your own circuitry.