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Low cost RF for simple data link and remote control using ATtiny12 microcontroller

Wireless data links don't have to be difficult to build or adjust They can be built quickly using inexpensive and readily available parts. Overview This is a simple, low cost RF data link that can send data reliably over a distance of one to two meters, enough for bench top or desktop use. The data protocol supported by the encoder and decoder provides 16 device addresses, three message types, and a toggle ...

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A Low Power PLL FM Transmitter using LMX1601 and ATtiny2313 microcontroller

An LMX1601 Phase locked loop, a discreet  FET VCO, and an AVR micro controller combine to make a stable, easy to use monophonic FM transmitter that includes a an audio activated switch that turns the transmitter on only when its being used. Notice: Before operating a radio transmitter, find out what kind of transmitter operation, if any, is permitted in your locality. Radio transmitter operation is a seriou ...

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A Simple FM Stereo Transmitter using ATTINY12 microcontroller

The parts to the right of the green capacitor are the FM radio transmitter. The parts between the 8 pin DIP and the transmitter are the resistor matrix. One capacitor, C5, is mounted on the back of the board, and one other capacitor, C11, had not yet been installed. It was later installed just below the 560k resistor. The connector in the upper-left is the unregulated power input. The connector in the lower ...

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Cellphone Operated Robot using ATmega16 AVR microcontroller

This Instructible is entered in the Category: 13 - 18 of the National Robotics Week Robot Contest MY URL-http://avadhutelectronics.blogspot.com/ MY [email protected]   Video :Cellphone Operated Robot Step 1 Component Required   Component Required: IC1 - MT8870 DTMF decoder IC2 - ATmega16 AVR microcontroller IC3 - L293D motor driver IC4 - 74LS04 NOT gate D1 - 1N4007 rectifier diode R ...

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Digital Stop Watch with ATmega8 using microcontroller

Hello Friends, In this tutorial we will make a "Digital Stop Watch" using an AVR ATmega8 Microcontroller. This will help you learn many concepts like Multiplexed Seven Segment Display Interfacing Using AVR Timers Using Interrupts And many others too. The code is written in C language for avr-gcc (WinAVR) . Steps to Build the "Digital Stop Watch" using AVR ATmega8 MCU Make the circuit according to the schema ...

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Relay Timer with ATmega8 AVR MCU

Timers are widely used in industrial and domestic application for automating tasks. Microcontrollers can be used to design versatile and accurate timers with ease. Here I present a simple timer that can be used to turn on/off a load after user specified time. The Timer uses a standard 16x2 lcd module for user interface (UI). User can set the time using a 3 button keypad. After that Timer is started. While c ...

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Remote Controlled Fan Regulator using ATmega8 microcontroller

This device can be used to remotely control the speed of an AC fan and to switch it on or off. The remote control is a cheap NEC Format remote, usually supplied with small DVD players. Three buttons are used to command the circuit. The UP key increase the fan's speed while the DOWN key decrease it. The ENTER key is used to switch on or off the fan. The unit provides 10 way speed control from 0 to 9. The cur ...

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