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Electronics Eng

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Temperature Controlled Dc Fan Using Microcontroller

The main principle of the circuit is to switch on the fan connected to DC motor when the temperature is greater than a threshold value. This can be used in home applications and in cpu to reduce heat.

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Automatic College Bell

An inexpensive automatic college / school bell system is developed in this project. An AT89S52 microcontroller/Arduino is used with a display unit and a relay so that the time is displayed and the bell is triggered. This system can be used in academic institutions and avoid manual intervention.

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