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Speed and Direction Control of Stepper Motor using AVR Microcontroller

Stepper motor can be termed as digital motor because it operates on pulses. Unlike AC or DC motor that rotates continuously, stepper motor rotates in steps. It rotates in number of steps as per applied number of pulses. Stepper motor is used in many applications like: . Robotic application – to move robotic arm to specific position, to move robo-vehicle in specific direction at specific angle · Disk drive a ...

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LED Light Bulb Controller using AVR Microcontroller

Previously before 10-15 years the majority of electrical lights were either light bulbs (with yellow light) or tube-light sticks (with white light). The major disadvantage of these lighting devices was they consume more electrical energy (in terms of Watt) and gives less luminance (brightness). Light bulb wastes their most of the energy in form of heat. Also the life time of such devices was also short. Nex ...

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Intelligent LED light controller using AVR

Now a days LED light bulbs are becoming more and more popular because they have several advantages. Some of their advantages are listed below ·         Their energy (electrical) consumption is much more less ·         Their luminance is more ·         Their intensity can be varied ·         Their life time is more So if LED lights are used in place of conventional lights we can save much more electrical ene ...

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DC Motor Control with Joystick & AVR Microcontroller

In many of the applications it is required to alter the direction of DC motor instantly. Like in washing machine, mixer, drilling machine winding – rewinding machine etc. Changing the direction of DC motor using joystick is most suitable and handy method. Joystick Control for DC motor is mostly used in different Robotic applications like ·         Moving robotic hand up and down ·         Rotating robotic a ...

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Light Tracker Demonstration

Electricity is the most required and important element of human life. We cannot imagine our day to day life without electricity. Electricity is generated using conventional (coal, diesel) and non conventional (water, wind, sunlight) energy sources. The recent and latest trend is to generate electricity from solar energy. The solar panel (made up of solar-photovoltaic cells) converts solar energy in to elect ...

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Audio Tone Generator using AVR Microcontroller

The circuit presented here demonstrates how to generate Audible Frequency from an AVR Microcontroller. The output of Microcontroller is always digital so to generate audible sound at the outset first it needs to be converted into Analog. A DAC (Digital to Analog Converter) is used for this purpose. Microcontroller generates sine wave of Audible Frequency using DAC. This sine wave is further given to Audio A ...

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Stepper Motor Angle Control using AVR Microcontroller

There are many applications in which it is required to set the position of an object at a desire angle. Some of the examples are 1.      Satellite Dish Antenna positioning  The Satellite Dish Antenna should be in straight alignment with Satellite in Space to receive signal with maximum strength. So it’s required to position the Dish Antenna at a certain angle 2.      Aileron, Elevator and Rudder positioning ...

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