LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

ArduPlane, ArduCopter, ArduRover, ArduSub source

(CGCSTCD'2017) An easy, flexible, and accurate plate recognition project for Chinese licenses in unconstrained situations. CGCSTCD = China Graduate Contest on Smart-city Technology and Creative Design

一个视频播放器，开源版 potplayer ，用于总结播放器开发技术。

code for the rgbd-slam tutorial written in cnblogs

APM Planner Ground Control Station (Qt)

HybridOS is a totally new open source operating system designed for smart IoT devices and cloud computing environment.

APM Plane, APM Copter, APM Rover source