Li-Fi stands for Light-fidelity. The technology was very new and proposed by the German Physicist Harald Hass in 2011. Li-Fi basically aims to replace Wi-Fi by using light to transmit internet signals. It works on the principle of visible light communication I.e .use of visible light for communication. Though Li-Fi is a system that is capable of transmitting data at high speeds over the visible light, ultraviolet and infrared spectrum but in its present state only LED lambs can be used. It consists of a light bulb which is used as an emitter and a photo diode as a receiver. Li-Fi provides transmission of data through an LED light bulb that varies in intensity faster than human eye can follow .It is ideal for high density wireless data coverage in confined area where there is no obstacle. It provides better bandwidth efficiency, availability& security than wifi. The technology is actively being developed by several organizations across the globe. In this project we tried to show a basic prototype of wireless data transmission using LiFi and what future it holds within itself for the new generation needs
Keywords: Transmission , Microcontroller, Hyperterminal, Spectrum, Efficiency

An important function in self-driven cars is Obstacles Avoidance. Mapping the environment is indeed necessary for such vehicle to make a path planning and control. In this project we have concentrated on making an obstacle avoider, sensing the surrounding by using SONAR principle. This system provides a low cost replacement of LIDAR and SLAM technology. It is quite accurate to avoid obstacle in real time.
Keywords: detection, obstacle, avoiding, SONAR, real time, low cost, solution.

Robot reduces the efforts being put by humans in their day to day works. This paper is about to develop voice-controlled robotic car. This robotic vehicle helps to control robot through voice commands which is being received via android application. In the receiver part there would be a Bluetooth transceiver module which will receive the commands and will pass it on to the robotic car through Arduino. The robotic car will move in all directions according to voice commands given by the user. After processing the speech into text it will convert into text which will led to the necessary motion instructions are given to mobile platform via RF link. Ultrasonic sensors interfaced with Arduino will help in automatic slowdown whenever it sees an obstacle. In future technology this technique may prove to be a milestone in vehicle and for long distance range, Dual tone Multi Frequency (DTMF).
Keywords: Bluetooth transceiver, Arduino, RFlink, vehicle automation, DTMF.