â?¦ MINI Quadcopter V5.2 drones development kit, including controls â?¦ Maneuverable by controller or mobile application â?¦ Powerful 32 bit MCU STM32F103T8U6 72MHz 64Kbs flash â?¦ Bluetooth 4.0 LE connection with smart phone â?¦ On-board low energy 2.4G chip nRF24L01 +