I made a quad Copter of ultra-small. The operation can also be from a PC or PS3 controller with Bluetooth connection. And, programmable with Arduino. (Using the MultiWii flight control) If programming, can be self-supporting flight. It also see blog : http://blog.eldhrimnir.com/wordpress/?page_id=3752 PCB-based maximum width = 47mm PCB arm width = 4.6mm PCB arm length = 105mm Motors span = 85mm (left and right) / 120mm (diagonal) (Including rotation rotor diameter) maximum width = 175mm Rotor diameter = 55mm Airframe weight = 36.2g-45.8g (including battery) MPU = ATMega1284P(Sanguino) + FT232RQ(USB-Serial) FCU = ATMega32u4(MultiWii) USB peripheral/host controller = MAX3421E Lipo-Battery Management = BQ24075 On/Off Controller = MAX16054 Gyroscope&Accelorometer = MPU-9150(MPU)&MPU-6050(FCU) Digital Compass = MAG3110(FCU) Logic Level Converter = PCA9306 & TXB0104 LED Driver = TLC5940RHBR &RGB-LEDx4+LEDx4 Moter Drivir = PMV31XN&BAS40T/R Li-Po Battery 3.7V 400mA(25C) Coreless motor = 7mmx20mm Propellers = QR-Ladybird -Z-01 https://www.youtube.com/watch?v=8VX-tKE3aqs https://www.youtube.com/watch?v=nh-0Fc6GlFM https://www.youtube.com/watch?v=Fu4-9xU_6Ec https://www.youtube.com/watch?v=gE6vXP9gRcg