interfacing

TV remote controller 160KHz High Quality Stereo MMC WAV player using ATMEGA32

TV remote controller 160KHz High Quality Stereo MMC WAV player using ATMEGA32

Introduction: This is my first AVR based hobby project and the most successful one compared to my all previous stuff. I am 100% satisfied with this work. Few months ago, I tried to make a wav player using a PIC16F877A. It worked anyway, but the audio quality was not so good for higher sampling rate […]

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Multitasking in AVR A demo to run 7 tasks on an atmega32

Multitasking in AVR (A demo to run 7 tasks on an atmega32)

Introduction: Switching multiple tasks on a same CPU is the one of the major function of an operating system. What I did now is a time sharing multitasking (time multiplexing) on an AVR. Here an atmega32 is configured to use Round-Robin Multitasking. Round-Robin allows quasi-parallel execution of several tasks. Tasks are not really executed concurrently

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An attempt to show grayscale images on an LED dot matrix display with software PWM using PIC16F877A

Introduction: This is just a time pass hobby project, I am trying to display some pictures (JPEG/PNG/BMP etc) on my 8×8 led dotmatrix display.  You can see photos of my 8×8 led dotmatrix display showing some grayscale pictures. The main thing which you may notice is that the brightness of each led depends on the

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Drawing geometric figures on a PAL TV using ATmega32 (128×64 resolution)

Introduction: I am interested to draw lines, square, rectangle, circle etc on my TV screen. At first I was confused where to start. While thinking about it, a pencil and an eraser came to my mind. If we have a good pencil, eraser and a paper, then we can draw on it according to our

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Running PYTHON pymite 09 on an Arduino MEGA 2560 using atmega16 micrcontroller

Running PYTHON (pymite-09) on an Arduino MEGA 2560 using atmega16 micrcontroller

Now it is the first time I am using an arduino board. Arduino mega 2560 is really a great product. The chip got a flash of 256KB, RAM of 8KB and EEPROM of 4KB. Also, the data sheet of Atmega2560 says that we can extend the RAM (by external) upto 64KB. Another most important feature

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Generating AUDIO ECHO using Atmega32 microcontroller

Generating AUDIO ECHO using Atmega32 microcontroller

Introduction: But now I can do this very easily by a simple digital signal processing using a microcontroller. It’s concept is very simple, ie we need to apply a proper delayed feedback in digital samples with in a circular buffer. I did this using an atmega32 microcontroller and it worked fine. This is simple but

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