Metaboard, We call it USBPrayog, is a low cost alternative to popular Arduino UNO prototyping board. It provides most of the arduino functionality at a price that is 1/4th of Arduino UNO.
USBPrayog can be programmed over USB port directly without any need of external programming hardware. This post tells you how to get started with an USBPrayog board at very first time.
The all new board by ST, meant for evaluation of it's STM32 microcontrollers in an easy manner. This is first STM board that is suppored by mbed SDK. This board has Arduino UNO R3 compatible header. Any standard Arduino Shield can be plugged into this board directly.
