sd card

75 Articles

Recovering Photos With PhotoRec

November 12, 2008 by 17 Comments

photorec

A coworker approached us today with a corrupted SD card. It was out of her digital camera, and when plugged in, it wasn’t recognized. This looked like the perfect opportunity to try out [Christophe Grenier]’s PhotoRec. PhotoRec is designed to recover lost files from many different types of storage media. We used it from the command line on OSX, but it works on many different platforms.

It’s a fairly simple program to use. We plugged in the card and launched PhotoRec. We were prompted to select which volume we wanted to recover. We selected “Intel” as the partition table. PhotoRec didn’t find any partitions, so we opted to search the “Whole disk”. We kept the default filetypes. It then asked for filesystem type where we chose “Other” because flash is formatted FAT by default. We then chose a directory for the recovered files and started the process. PhotoRec scans the entire disk looking for known file headers. It uses these to find the lost image data. The 1GB card took approximately 15 minutes to scan and recovered all photos. This is really a great piece of free software, but hopefully you’ll never have to use it.

Parts: MicroSD Memory Card Holders

October 6, 2008 by 23 Comments

SD cards add cheap persistent memory to your project, but the holder takes a lot of board space. A smaller option is the microSD flash format. MicroSD cards are compatible with regular SD cards, and most come with a free adapter. We looked at four holders for our mini web server. Which should you choose? Read about our experience below. Continue reading “Parts: MicroSD Memory Card Holders” →

How-To: Web Server On A Business Card (Part 2)

September 25, 2008 by 140 Comments

This mini web server is slightly smaller than a business card. There are a lot of tiny one-board servers out there, but this is probably the smallest you can etch and solder at home. Unlike many embedded web servers, files are stored on a PC-readable SD card, not in a difficult-to-write EEPROM. Read on for the web server design, or catch up on PIC 24F basics in the previous article: Web server on a business card (part 1).

Continue reading “How-To: Web Server On A Business Card (Part 2)” →

MioPocket 2.0 Release 27

September 5, 2008 by 19 Comments

Miopocket Screenshot

GpsPasSion forum member [Ospray] has released a new version of MioPocket. For those of you that don’t know, MioPocket is a great unlock kit for GPS units. It basically unlocks the hidden potential of your GPS so you can access the built-in functionality of a PDA as well as retaining the GPS software. This means you can play music, watch video, play games, read and write office documents, and many other things with the once single-purpose device.

Originally written for Mio brand devices, it has been successfully used on a couple other brands. We’ve seen it on a Navigon 2100 using a modified install. This software can run directly off the SD card, so it can easily be updated or removed.

The fun part is fiddling with the scripts to get the newest releases to work on the Navigon and Magellan devices.