Arch Blueseeed LE (nRF51822) is an mbed enabled development board based Nordic nRF51822. With Arduino form factor and Grove connectors, it is extremely easy to create a bluetooth low energy device. The nRF51822 is a powerful multi-protocol single chip solution for ULP wireless applications. It incorporates Nordic’s latest best-in-class performance radio transceiver, an ARM Cortex M0 CPU and 256kB flash + 16kB RAM memory. The nRF51822 supports Bluetooth® low energy and 2.4 GHz protocol stacks. Features mbed enabled Online IDE Easy to use C/C++ SDK Handy libraries CMSIS DAP based on LPC11U35 Drag-n-drop programming Debug using CMSIS DAP standard USB virtual serial for communication Arduino form factor with Grove connectors Nordic nRF51822 Multi-protocol Bluetooth® 4.0 low energy/2.4GHz RF SoC ARM Cortex M0 processor 256kB flash/16kB RAM Configurable I/O mapping for digital I/O USB Micro B connector