Hobbypower CC3D Openpilot Self-stabilizing Flight Controller 32Bit for Mini 250 Quadcopter + 1 Hobbypower strap an all-in-one stabilization hardware which runs the OpenPilot firmware. It can fly any airframe from fixed wing to an octocopter and is configured and monitored using the OpenPilot Ground Control Station (GCS) software. Powerful STM32 32-bit microcontroller running at 90MIPs with 128KB Flash and 20KB RAM 3-axis high-performance MEMs gyros and 3-axis high-performance MEMs accelerometer Tiny 36mmx36mm 4 layer PCB for superior electrical noise reduction and flight performance. Direct high speed USB support with no drivers required, a truly plug and play device.