The solar power plant is one of the renewable energy that already was implemented in around the world. The important component in the renewable power plant is inverter device that convert the direct current to alternating current. The problem in the inverter are power quality, harmonics, and grid sy . . . . . .

In this paper, we designed and implemented the robot arm control by hand tracking using stereo camera. The camera captured and tracked the hand motion and save the coordinate data of the hand motion in 3D (x, y, z). By using TCP/IP communication, those data were sent to arm robot and be transformed . . . . . .