![]() This can be placed at the TV receiver such that the rays received by the remote are superimposed by the IR rays emitted by this device. ![]() The frequency of the IR light is the same as the frequency of IR light by the TV remote. ![]() Here a device is developed which produces IR rays which can block the rays from the TV remote. The microcontroller converts these signals to binary commands and sends these commands in serial form to the computer through a level shifter IC. These rays are received by the IR receiver and converted to electrical signals which are given to the microcontroller. Here the commands are sent from a TV remote in the form of modulated IR rays. The TV remote works on the principle of IR communication and the commands are sent to the computer through a control unit. This system uses a TV remote as a cordless mouse to perform operations on a computer. Using a TV Remote as a Cordless Mouse for Computer The relay is accordingly controlled to switch on the load in case the water level is less or switch off the load in case the water level is more. Based on the input from the sensor, the microcontroller accordingly controls the switching of the relay switch, which is a combination of a transistor and a MOSFET in this case. The ultrasonic sensor senses the liquid level in the water tank and feeds this information to the microcontroller. ![]()
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