Posts | Comments

Planet Arduino

Archive for the ‘sd card’ Category

Dic
11

Quick & Easy Temperature Loggers

arduino, DS1307, DS18B20, logger, sd card, temperature, Test/Measurements Commenti disabilitati su Quick & Easy Temperature Loggers 

F9LPZFTI3GX8NDS.MEDIUM

by jazzycamel:

I work as a software developer for a biology lab where my day job consists of creating applications to deal with big data visualisation. Recently however one of my colleagues had the need to take regular temperature measurements form a range of jars of liquids over quite an extended period. The commercial available solutions to achieve this are expensive and surprisingly lacking in features. So, as a dedicated hacker and maker, I immediately stepped in an said we could make something better ourselves. So we did. And this is how.

Quick & Easy Temperature Loggers - [Link]

Ago
19

Rescuing an SD card with an Arduino

arduino hacks, data recovery, sd, sd card, SDIO, SPI Commenti disabilitati su Rescuing an SD card with an Arduino 

SD

A few days ago, one of [Severin]‘s SD cards died on him, Instead of trashing the card, he decided to investigate what was actually wrong with the card and ended up recovering most of the data¬†using an Arduino and an immense amount of cleverness.

SD cards can be accessed with two modes. The first is the SDIO mode, which is what cameras, laptops, and other card readers use. The second mode is SPI mode. SPI is slower, but much, much simpler. It turned out the SDIO mode on [Severin]‘s card was broken, but accessing it with an Arduino and SPI mode worked. There was finally hope to get files off this damaged card.

[Severin] used a few sketches to dump the data on the SD card to his computer. The first looked at the file system and grabbed a list of files contained on the card. The second iterated over the file system and output all the files in hex over the serial port. With a bit of Python, [Severin] was able to reconstruct a few files that were previously lost forever.

Even though the SD card was completely inaccessible with a normal card reader, [Severin] was able to get a few files off the card. All the sketches and Python scripts are available on the Githubs, ready to recover files from your broken SD cards.


Filed under: Arduino Hacks


  • Newsletter

    Sign up for the PlanetArduino Newsletter, which delivers the most popular articles via e-mail to your inbox every week. Just fill in the information below and submit.

  • Like Us on Facebook