design

Multichannel USB Analog Sensor (1)

Multichannel USB Analog Sensor using ATMega48 Microcontroller

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Sometimes it’s tempting to re-invent the wheel to make a device function exactly the way you want. I am re-visiting the field of homemade electrophysiology equipment, and although I’ve already published a home made electocardiograph (ECG), I wish to revisit that project and make it much more elegant, while also planning for a pulse oximeter, an electroencephalograph (EEG), and an electrogastrogram (EGG). This project is […]

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RX433 TX433 avr test (1)

Running TX433 and RX433 RF modules with AVR microcontrollers using Atmega8

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Sometimes in embedded design you may want to go wireless. Might be you will want to log various readings of remotely placed sensors, or simply build a remote control for robot or car alarm system. Radio communications between two AVR microcontrollers can be easy when specialized modules are used. Lets try to run very well

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base station (1)

A Wearable Wireless Sensor System using ATmega644V

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Introduction In this digital age, new interfaces for musical expression provide much broader musical possibilities than have ever existed before. There is a constant quest to be in harmony with one’s instrument so that music can flow freely from the imagination and take form effortlessly. This sparks an interest in new ways to interact with

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USB interface

AvrUsb500 — an open source Atmel AVR Programmer using ATmega8

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Why Stk500 and USB? Until the beginning of this year a simple parallel port programmer was the only good programmer as it could be used for any device. All device dependent information is stored in the programmer software on your computer. The problem is however that the parallel port is slowly disappearing. Apple does not

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Head Controlled Keyboard And Mouse schematic (1)

Head-Controlled Keyboard And Mouse using ATmega32

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Easy Input is a head-controlled keyboard and mouse input device for disabled users. The system uses accelerometers to detect the user’s head tilt in order to direct mouse movement on the monitor. The clicking of the mouse is activated by the user’s eye blinking through a reflective sensor. The keyboard function is implemented by allowing

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Connect Four with Programmable Infrared Receiver Atmel Mega32

Connect Four with Programmable Infrared Receiver Atmel Mega32

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We have designed a programmable infrared receiver which can utilize any pulse coded IR signal to play Connect Four from a remote distance. The programmable infrared receiver device we have created can decode any pulse-width modulated signal of an IR remote control, store it in non-volatile memory, and then recognize that signal again the next

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Data Acquisition System

Data Acquisition System With Controller Area Network and SD Card Using Atmega32

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Introduction This project implements a high speed data acquisition system using Mega32 microcontrollers and a Controller Area Network (CAN). Recording data is essential to testing and developing a racecar. Recording what each sensor is doing can tell an engineering how the car is performing, and most importantly, how to make it faster. A well outfitted

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Networked Biometric Authentication

Networked Biometric Authentication Using Atmega32

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Introduction: Due to the increasing need for securing data and places, the biometric authentication industry is seeing large market growth.  We decided to build a scalable, small, and efficient device that can be used to secure doorways throughout a complex.  We use a FingerPrint Cards capacitance based fingerprint scanner as our capturing device.  This data

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