Circuit Lake

Electronic Project and Circuit Collection

Atmega644 Related Resources


Ultrasonic Security System

June 29, 2012 By: admin Category: AVR, Microcontroller, Security System No Comments →

Ultrasonic Security Alarm

This portable security system is built based on Atmega644 microcontroller. It can detect intruders based on their physical presence. The system uses URM37v3.2 ultrasonic sensor which is connected to MCU through rs232 serial communication. To rotate sensor for wide coverage range, the system is equipped with Parallax servomotor. For user interface, there are LCD and […]

AVR Touchpad Handwriting Recognition

May 14, 2012 By: admin Category: AVR, Display, Interfacing, Miscellaneous, Project No Comments →

AVR based Handwriting Recognition Project using Neural Network

This ATmega644-based project implements a touchpad input system which takes user handwriting input and converts it to a printed character. Currently, the device only recognizes the 26 letters of the alphabet, but it could be easily generalized to include any figure of completely arbitrary shape, including alphanumeric, punctuation, and other symbols using available training system. […]


Ear Trainer

October 10, 2011 By: admin Category: Audio, AVR, Microcontroller, Miscellaneous, Project No Comments →

DIY ear trainer

The goal of project is to helps people develop the musical skills of perfect pitch and relative pitch. Push buttons allow the user to navigate a graphical user interface (GUI) on a liquid crystal display (LCD). In perfect pitch training mode, a note is played and the user tries to identify the note on an […]

Wireless Human Health Monitor

August 10, 2011 By: admin Category: AVR, Data Acquisition, Microcontroller, Monitoring, Project, Wireless Comments Off on Wireless Human Health Monitor

wireless health monitor

The aim of this ATmega644-based project is to build a portable device implementing wireless technology and taking full advantage of the wide-spreading Internet to provide a convenient solution to monitor human health.