Most RC planes follow a simple control ... of an open wind tunnel. Optical position tracking provided closed-loop feedback and power was provided via a tether to minimize weight. A PID flight ...

Although [Benjamin] designed a custom flight controller ... complex part of a drone is not the mechanics or even the electronics, but the control software. Thanks to open source projects like ...

3D Robotics (3DR) wants to make it easy for developers to add custom features or create applications for their drones. The company has unveiled a free and open-source drone app development platform.