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Introduction Nowadays, the use of private vehicles is very common, so the number of vehicles on the road is increasing exponentially. Roads without supervision or guidance can lead to traffic jams and accidents. Traffic lights are signaling devices used to control the flow of traffic. The traffic lights will provide directions to users (drivers and pedestrians) through lights displaying standard colors. The three colors used for traffic lights are (red, yellow and green). This system should be used to control traffic lights to ensure smooth and safe traffic. ...

Introduction The Water Level Indicator employs a simple mechanism to detect and indicate the water level in an overhead tank or any other water container. The sensing is done by using water sensor . There are a lot of water sensor models available in the market like water sensor(china) model SEN-00235, Grove- water sensor model SEN-00042, water flow sensor model SEN-00043 etc. For this project we’ll use the water sensor (china) model SEN-00235 because it’s cheap & economical. The arduino uno is used for the project to run through coding. Water level indicator will inform the user about different level of water that a container is containing i.e, high/ average/ low . there is also a buzzer system attached to the circuit to let an user know when the container is full. ...