uThere Ruby Autopilot Flight Controller System Set with Expander Board & Servo Measurements: • Ruby Expander Board: 3.25" x 1.25" • Ruby Main Board: 4.5" x 1.5" Brand: uThere Model: Ruby Autopilot System Type: Flight Controller Expander and Sensor Suite Compatibility: RC Aircraft / Fixed Wing Interface: I2C2, Serial, USB, Aux Ports Components Included: Ruby Expander, Main Board, Servo, Wiring Harness Color: Red/Black Material: PCB, Plastic, Copper Country of Origin: United States Application: UAV / Drone / RC Hobby Features: GPS Port, Airspeed/Mag Port, Rudder/Aileron Control UPC: Does not apply Keywords: uThere Ruby, Autopilot System, RC Flight Controller, Drone Electronics, UAV Components, Fixed Wing Hobby, Expander Board, RC Servo, Flight Stabilizer, Avionics, Sensor Suite, Hobbyist Parts