A simple signal generator which produces sine waves (or any waveform really) at audio frequencies using DDS and is controlled a USB serial connection. Only 2 chips are used in this circuit. The AVRATmega88 which produces the signal, and an FT232R for the USB interface. While a computer is required to control the varying frequency of […]
USB controlled DDS signal generator with ATmega88 Read More »
In these days we’re here with our subsequent assignment that is RFID and keypad primarily based security machine. This assignment is implemented by means of the use of 8051. often we are able to see RFID tags or card in metro teach when we’re going to someplace then we need to apply a RFID tag
RFID Based Home Security System Using 8051 Using Atmega Read More »
we designed and implemented a speaker recognition device that acts as a lock triggered by the sound of your voice saying a specific passcode. The implementation uses hardware filtering from a microphone and many signal processing concepts in software. All software and matching is implemented in the ATmega1284p. The lock has two modes: training and
Speech Lock Using Atmega Read More »
I had this one project where the device was supposed to speak out the output. And I was too Lazy to actually go and build a PC based application and not that lazy to make it on a micro controller. So here is some of my research where i am gonna show you how to
Speech Synthesis on Atmega128 Read More »
Introduction Let us introduce the Breath-o-Matic alcohol sensor. The Breath-o-Matic is an electronic, non-invasive method of measuring a human’s blood alcohol content (BAC). Its elegant, yet discombobulated design embodies a cheerful mix of mechanical and semiconductural components. Simply blowing into the mouthpiece causes the Breath-o-Matic to automatically begin taking a sample of your own foul
The Breath-o-Matic Using Atmega32 Read More »
Ultraviolet (UV) is an electromagnetic radiation with a wavelength from 10 nm to 400 nm. The ML8511 is an ultraviolet sensor that output an analog signal correlated to the amount of UV light detected. By datasheet the sensor detects wavelength from 280nm to 560nm. Here I’ve implemented a driver for AVR Atmega, portable to other microcontrollers, that correlates the sensor output
UV Sensor ML8511 AVR Atmega library Read More »
The aim is to create an input system for mobile devices, which is controlled by the movements of the fingers, in this case with the help of a glove. Para ver este tutorial en español, por favor haga click aqui: https://www.instructables.com/id/Como-Hacer-Un-Guan… Step 1: Creating the Glove
How to Make a SensorGlove With Android Connection Using Atmega Read More »
• 1 Khz From a Quartz Crystal • 1 V P-P Sine Wave Calibrated Output • 1 KHz Square Wave Output • 900 mv Inverted Sine Wave Output (Uncalibrated) Downloads Download the WINAVR main source for the 2313 version of the firmware: 2313sine.c Download the complete zipped WINAVR project for the 2313 version of the firmware: 1_kHz_sine_2313.zip
A 1 Khz Digital Sine Wave Signal Source using ATmega8515 microcontroller Read More »
Sometimes when tuning various electronic hardware we need simple signal generator with various waveform and frequency. One of the options is to by a professional with variable gain professional coating and many additional functions. But if you are an amateur you might want to build one. This small project is dedicated for building one of
AVR DDS signal generator V1.0 using ATmega8 Read More »
This article is in continuation of PWM generation using AVR timer. In the previous article, PWM generation using Phase correct PWM mode is described. However, there are some applications like DAC, power regulation and rectification etc. which require high frequency PWM wave. The PWM generation using Fast PWM mode is suitable for such applications. This article focuses on Fast
