DFROBOT Romeo BLE - Arduino Robot Control Board with Bluetooth 4.0

Specification : - Microcontroller: ATmega328P - Bootloader: Arduino UNO - On-board BLE chip: TI CC2540 - Transmission range: 70m in free space - Support bluetooth remote update the Arduino program - Support Bluetooth HID - Support iBeacons - Support AT command to config the BLE - Support Transparent communication through Serial - Support the master-salve machine switch - Support usb update BLE chip program - 14 Digital I/O ports - 6 PWM Outputs (Pin11, Pin10, Pin9, Pin6, Pin5, Pin3) - 8 10-bit analog input ports - 3 I2Cs - Two way H-bridged Motor Driver with 2A maximum current - 5 Buttons - Support Male and Female Pin Header - Integrated sockets for APC220 RF Module - Power Supply Port: USB or DC2.1 - External Power Supply Range: 5-23V - DC output: 5V/3.3V - Auto sensing/switching external power input - Size: 94mm x 80mm(3.70\x3.15\) Source : https://www.dfrobot.com/wiki/index.php/RoMeo_BLE_(SKU:DFR0305) https://www.dfrobot.com/product-1176.html