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Browse through a collection of 500+ interesting electrical & electronic Projects from 300+ contributors.
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Electricity Anti-theft System Block DiagramElectricity theft is a common problem. Due to electricity theft, not only there are losses to the revenue of the government but over loading and damage to the transformers is an unwanted consequence of the theft as well. 

The project demonstrated here is to show the mechanism of electricity anti-theft system. A pack of parallel connected bulbs is used as load while the programmable circuit operating the supply controlling relay is based on Arduino. The principle used behind detecting overloading is voltage comparison and an additional buzzer circuit is attached to the project to alert electricity theft in the locality. The buzzer mechanism has been added to alert people of electricity theft and demoralize the mischievous elements.

DC Motor speed testing using arduinoIn DC motor speed testing, the PWM is applied to the motor and its duty cycle is varied from min to max. While applying PWM the actual RPM of DC motor is also measured and note down to see how motor speed (RPM) varies as PWM width varies. Along with this, the applied voltage to the motor is also measured to see the motor speed at different applied voltage.

Finally, after noting down all the values, the observation table is prepared for pulse width (duty cycle), applied voltage and motor speed in RPM. This table is used to prepare duty cycle->RPM graph or applied voltage->RPM graph of the motor.

soil moisture detectionFarming and Gardening are not trivial jobs. There are a range of crops and plants and numerous varieties of each plant or crop. Different plants and crops have different requirements of water, fertilizer and sunshine. The fertility of soil for any farming or gardening effort is usually judged by the level of nutrients and moisture in it.

A number of times the farmers or gardeners are not able to nourish the soil with sufficient fertilizer or water while at many times they just over do it. This project is to help farmers and gardeners keep a check of the soil health by real-time tracking the moisture level of their soil.

 

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