Aim of this project is to present a way to store a large quantity of data into microSD card in files with FAT32 format. Here, ATmega32 is used for data collection and microSD interface. The data is received from in-build 8-channel ADC of ATmega32. One channel is used for reading temperature from LM35 sensor and remaining channels …
This post presents a way for testing and learning the FAT32 system on microSD/ SDHC cards without building the hardware with microcontroller, thanks to Henry Yiu. This project uses the FAT32 library available in my previous post, but does away with the microcontroller part. So, you can use this code with a PC and USB card reader and get insight …
microSD FAT32 testing using Visual C++ Using Atmega Read More »
Here is my project on interfacing of SD Card (microSD). microSD cards are available very cheap nowadays, a great option for having a huge memory in any embedded system project. It is compatible with SPI bus, so the interfacing is easy. SD card adapters are also easily available in market, one can easily make a bread-board adapter by soldering …
SD/SDHC Card Interfacing with ATmega8 /32 (FAT32 implementation) Read More »
You might have noticed the Slaveflash I built with an Attiny 24, the instructable can be found here: Slaveflash-trigger-for-digital-with-Attiny24 After building the first prototype I collected all my old flashes I got over the years and had four more slaveflash-triggers to built. I already figured out an PCB-Layout for the SOIC-version of the attiny 24. But the biggest …
This instructable shows how to use some freely available code, an arduino, and a standard magnetic stripe reader to scan and display the data stored on magnetic stripe cards such as credit cards, student IDs, etc. I was inspired to post this after reading the intro to magnetic stripe reading and Stripe Snoop that is …
Arduino magnetic stripe decoder using microcontroller using atmega Read More »
I collected a lot of site in the internet for various atmel avr projects will not work with the idea of a day’s archive is a grown up pretty. Atmel will be a solid resource for people interested in the firm. Atmel AVR Project Circuit Archive; Part-1: atmel-archive. part1 Part 2: atmel-archive. part2 # Generated by Directory Lister …
Atmel Avr Project Circuit Archive 360 MB using ATmega8 microcontroller Read More »
MMC/SD/SDHC card library This project provides a general purpose library which implements read and write support for MMC, SD and SDHC memory cards. It includes low-level MMC, SD and SDHC read/write routines partition table support a simple FAT16/FAT32 read/write implementation The circuit The circuit which was mainly used during development consists of an Atmel AVR …
MMC/SD/SDHC AVR Interface using ATMega8 microcontroller Read More »
In any microcontroller the Boot-Loader is the first code which executes before the application code does. The major function of the Boot-Loader is to load the application code into the flash memory of the microcontroller and execute it. In AVR microcontroller the Self Programming Mode (SPM) helps the Boot-Loader to load a particular application from where the application binary is stored.The …
How To Use SPM To load Application from EEPROM Using Atmga Read More »
This project explains how to interface the SD card with an AVR microcontroller. In this project an ATMEGA16 microcontroller is used. The microcontroller runs on 5V power supply with a built in crystal frequency of 8 MHz. A 2GB SDSC card from Transcend is used in this particular project, but the code will work with most of the SD …
Interfacing SD Card with AVR Microcontroller Using Atmega Read More »
This library implements an SD card Data Logger that runs on ATmega. It has a small footprint, so it can be loaded on an ATmega8, leaving space for user code. It supports SD and microSD cards formatted with FAT16. It also features log rotation. The “Petit FAT File System Module” by ChaN (http://elm-chan.org/fsw/ff/00index_p.html) it is used to write on SD card. I’ve …
SD card logger library with log rotation that fits on ATmega8 Read More »
