AVR ATmega Projects

Multichannel USB Analog Sensor using ATMega48 Microcontroller

Leave a Comment / Interfacing(USB - RS232 - I2c -ISP) Projects, Sensor - Transducer - Detector Projects /

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), […]

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Barker Code-Locked Loop Synchronous Demodulator using ATtiny2313 microcontroller

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A simple, low component count phase locked loop that locks onto and detects the amplitude of an incoming baseband 7 bit Barker code using a switched resistor demodulator that is driven directly by a microcontroller’s output pins. Balanced modulators using resistors and a microcontroller’s output pins. Locking into oncoming Pseudo-noise (PN) stream. Microcontroller modulates its

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Prime Calculator is Complete using ATMega8 Microcontroller

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My microcontroller-powered prime number generator/calculator is virtually complete! Although I’m planning on improving the software (better menus, the addition of sound, and implementation of a more efficient algorithm) and hardware (a better enclosure would be nice, battery/DC wall power, and a few LEDs on the bottom row are incorrectly wired), this device is currently functional

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Making a USB based AVR Programmer using ATMEGA8 Microcontroller

Leave a Comment / Interfacing(USB - RS232 - I2c -ISP) Projects, Microcontroller Programmer Projects /

Around time when I was beginning to learn about microcontrollers. I had exchanged my laptop with a senior at college for his desktop – that’s because the only way I knew how to program an ATMEGA chip was through either a serial port or a parallel port. USB programmers were not available widely and were

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BUILD A SIMPLE SERIAL PROGRAMMER FOR AVR DEVICES using ATtiny2313 Microcontroller

Leave a Comment / Microcontroller Programmer Projects /

Atmel described a simple programmer based on the AT90S1200 (NOT the AT90S1200A) controller in their application note. AVR910 (a modification to use the AT90S2313 is also given below). The circuit is so small and simple. I was able to put two of them together without using a printed circuit board. Taking only about an hour

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How to control Stepper Motor using AT89C51 Microcontroller

Leave a Comment / How To - DIY - Projects, Motor Projects /

As explained in earlier article, Stepper motor is operated by energizing the stator coils in an ordered sequence. When the input sequence of signal is applied to the motor leads, it starts rotating in steps. AT89C51 microcontroller has a current rating of 50mA. It can neither source nor sink huge current. ULN2003 is high voltage

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