The robot is the important part in the industrial electronics and various automation systems. That means the robot is the important part in day to day life of our human beings. In this paper shown that there is one sensor that is Leap motion sensor with help of this sensor, we can control a robotic arm or any automation system. In this system we also use raspberry pi 3 module with the help of this we can control a robotic arm or any automation system from anywhere. With the help of free hands movement, we control any output device. This system is user-friendly it reduces the efforts. It removes the use of the joysticks, remote control. The leap motion sensor is highly accurate and it highly flexible device the bending movement is more in this system. This system is a most useful system in the space technology in research parts. It uses in any emergency system like bomb diffusion.This system is used in the medical surgery detection of internal human organs.