Posts Tagged ‘card reader’

Hack: Why Is My SD Card Write Protected?

I ran into a situation the other day where my SD card was [all-of-a-sudden] write protected. I couldn’t format it, I couldn’t delete the files and I certainly couldn’t write to it. I checked the lock/unlock switch and still, no avail. I thought the card was a total loss.
 
It turns out, the SD card wasn’t the problem but the card reader was.
 
After some internet searching I found several solutions to the problem, but no one really explained what the problem was. So I thought others could learn on “why” their SD card was write protected and giving problems.
 
First off, lets take a look at the SD card reader itself. Below is a typical SD connector found inside most SD card readers. The area I will be talking about today is the part of the reader which makes a physical connection to either give write access or provide write protection. It’s the thin metal strip the blue arrow is pointing to.

internal sd card reader

What gives the SD card write protect error is when that metal strip does not make contact with another metal strip on the inside of the card reader. When the SD flash memory card is pushed inside the card reader, the internal metal strip is pushed outward and makes contact with the outer metal strip shown in the picture above.
 
To give you a better idea, here is a rough drawing / schematic of the metal connectors: Continue Reading 49 Comments

Flash Memory Lady Bug

Here is a twist on the traditional flash memory card reader.  The flash memoy Lady Bug is a creatively designed card reader with some additional features.

lady bug usb

The little Lady Bug is a microSD card reader, includes a min 5pin data cable and of all things, includes a micro UV money detector light.  Hmmm. Topping it all off, the Lady Bug includes 4GBs of memory so she can be used as a USB drive. Simply click the black “head” button on the front and the wings pop open giving you access to all her parts and features.  All this for just $10. Continue Reading 2 Comments

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