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How to control LM2596 buck-converter with microcontroller

Those buck converters will change the output voltage to make the feedback pin, connected to the output via a voltage divider, become 1.25V or so. If feedback is higher, output gets lower and vice versa. If one changes the ratio of resistors in voltage divider, output voltage will change. This is usually done by turning a trimmer resistor with a screwdriver. That is good enough for many applications where vo ...

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Distance Measurement using Infrared Sensor with ADC0804 & 8051 Microcontroller

Summary This project primarily consists of four units: Microchip Technology's SST89E54RDA-40-C-PIE, a sensor unit, an ADC0804 ADC component and the LCD module. Along with detecting an obstacle, its exact distance is also calculated and displayed on a 16x2 LCD interfaced to the microcontroller. The IR receiver detects the IR radiations reflected by the object being measured. The output voltage level of this ...

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Line Follower Robot using Microcontroller

When robot is placed on the fixed path, it follows the path by detecting the line. The robot direction of motion depends on the two sensors outputs. When the two sensors are on the line of path, robot moves forward. If the left sensor moves away from the line, robot moves towards right. Similarly, if right sensor moves away from the path, robot moves towards its left. Whenever robot moves away from its path ...

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How to take input from a particular pin of ATmega16

For understanding the human needs a system must be able to take input from user. The devices which can be used to take input for a system are keypad, touch screen, etc. In the article LED blinking, the microcontroller drives the LED or in embedded language the microcontroller was set to give o/p, this article gives brief information of getting an input from user at a particular pin of microcontroller. In or ...

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Flat Bed Scanner Using Microcontroller

Introduction     Quite possibly the slowest and lowest resolution of any scanner on the market today, but it sure is mesmerizing to watch.. and it actually works!      That's about the best way to describe this behemoth of a project, which involved countless hours of building, gluing and scavenging for parts. The goal we strived for was to create a useable scanner that outputted to the TV and possibly data ...

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SmartBlinds Using Mega32

Overview The SmartBlinds system uses a microcontroller to control the angle of a set of miniblinds used at home, in the classroom, or on the job. Using SmartBlinds, a user can more effectively control the light coming into the room, or have an alarm that opens at a specified time. We've noticed that despite the convenience of owning miniblinds, we were frequently too lazy to get up to adjust the angle of th ...

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Keypaw Using Atmel Mega32

1 Introduction The Keypaw is a 12-button input device that provides computer users with an ergonomic, fully-configurable alternative to the traditional QWERTY keyboard. The Keypaw is a microcontroller-driven device with 12 buttons mounted on two handsets; 1 button is provided for each finger, and 2 buttons are provided for each thumb. Pressing a button or combination of buttons on the Keypaw produces a sing ...

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