AVR ATmega Projects

BUILD A SIMPLE SERIAL PROGRAMMER FOR AVR DEVICES using ATtiny2313 Microcontroller

Microcontroller Programmer Projects / Ibrar Ayyub

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

How To - DIY - Projects, Motor Projects / Ibrar Ayyub

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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How to drive 595 shift registers with AVR hardware SPI using ATmega168 microcontroller

AVR ATmega Projects, Interfacing(USB - RS232 - I2c -ISP) Projects / Ibrar Ayyub

Driving a shift register using an AVR chip’s built-in hardware is really quite easy. Most of their offerings have an SPI module, or Serial Peripheral Interface. A shift register is exactly that, a peripheral device that communicates via a serial line. All we need to do is hook up our connections and use a few

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3 channel 8 bit EEPROM DAC with DS interface using ATtiny12 microcontroller

3 channel, 8 bit EEPROM DAC with DS interface using ATtiny12 microcontroller

Interfacing(USB - RS232 - I2c -ISP) Projects / Ibrar Ayyub

Low power. EEPROM memory for autonomous operation, 16 bytes available for general purpose use. Low cost. This device provides three channels of 8 bit pulse-width modulation. Output pulse duty cycle ranges from 0 to 255/256 in 255 steps. DACs may be loaded by the DS interface. DAC values may also be copied into the on-chip

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