Cheap DIY SD card breadboard socket

Do you have a project that needs an interface to mass storage, but don't have the resources to build a breakout board for a standard socket?

In this Instructable, you will learn how to make an SD card socket that plugs right into a breadboard for less than two dollars in parts (depending on how you get them of course). I show you how to use a simple straight pin header and modify it so you can plug in an SD card and attach it directly to a breadboard for data logging and prototyping. This is quick and easy so you don't have to wait for a socket in the mail, or build/buy the SMD breakout board for it either.

Basic soldering skills and common tools are required.

I will cover how to make vertical and right angle sockets. Either 7 or 8 pin should work. 9 pin may require some modifications, I only used 7.

Step 1 Gather tools and materials

You will need:

Solder
Soldering Iron, I use 45 watt but this is more than enough
Needlenose pliers
a vise is very useful to keep from burning yourself
and at least 21 pins of straight male breakaway header pins

I got the header pins from my local electronics parts shop. Radioshack doesn't carry them as far as I know, but they can be ordered from various places around the internet for very cheap. It was 2 dollars for 40 pins at my local shop.

Here is the digikey part, it's a bit more that 2 dollars. http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=A26513-40-ND
Same thing from Sparkfun
http://www.sparkfun.com/commerce/product_info.php?products_id=116

These are straight male breakaway header pins.

You could theoretically use right angle as well, but I used straight pins.

Comments

[emihackr97]

Great! it was really useful to me, since I needed an SD socket and couldn't manage to find one!
Also, its real cheap!

[raque]

great! Thanks for sharing

[CalcProgrammer1]

Thanks! I am learning how to use SD cards and prior to finding this I was just holding the card to some headers in the breadboard but it was introducing a lot of connection problems. This was easy and works perfectly! It makes a surprisingly good fit too.

[Jaapio]

Nice, now I just have to findout how to send commands and data in SPI mode and I can write data to a nice big storage.

You would not hapend to know what the protocol to use?

[TheZuke!]

Kudos!

[TheZuke!]

Nice idea!

[Davedwin]

Thanks! I'm thinking about using this in a prototype that I'm making too (brainstorming right now). As a solution to the pin 7&8 possibly shorting out. you could paint over the unused one, OR since paint will eventually scrap off you could file off the pin altogether. It's just a prototype after all, and you can get new cards for <$10.

[als_liahona]

Great idea, great Instructable!  I just added a comment to my own Instructable (http://www.instructables.com/id/Digital-Window-Sticker-Arduino-Controlled/) recommending this as an alternative to the expensive SD Card breakout board I used!

[T-virus]

Great! Can I turn it into a USB SD card reader?

[Kroden]

I suppose you could pick up a USB driver IC and build an interface around it. I think it would save some trouble to just buy one, but it is however possible. It would probably use the SD mode, and as such, you would need pins on all 9 contacts. Good luck to you if you try this, I'd like to hear how it goes if you do.

[T-virus]

I'm not good at electronic anyway. I really like the vertical socket, it's look so COOL!!!

[nevdull]

Brilliant and fantastic!

[frollard]

Neat take on a simple project. Is there something more sturdy or ...suited for the backplate (non-data side) I wonder? The pins just seems like they want to be...not pins :D Looks great though!

[frollard]

**Good job on getting tagged on hackaday too!

[Kroden]

Thanks for pointing that out, I never expected that. I don't visit hackaday very often, so i might have never seen that. On the subject of the backplate, I've been thinking of a way to use a PCB as the backing, in a more permanent setting. I'll make an update if I ever get around to doing that.

[frollard]

ooh, thats a wonderful idea - bend the header appropriate for a card laying flat against the pcb...then solder header on - I like it. It would take some custom drilling, but wouldn't need anything more than perf board.

[Kroden]

Hey, you should check out step 8, new!

[frollard]

Wonderful!

[GhostWolf]

Nice one, I think that I am going to try to make a Parallel port to SD card adapter for my Atari ST and IBM PC.

[KraZe_EyE]

Very nice dude; im gonna use this in my class

[Kroden]

cool, what kind of class is it?

[KraZe_EyE]

Advanced Digital; use of microcontrollers and and memory and stuff like that. I bet my teacher will flip when I whip this out.

[charlieb000]

use a microSD to SD adapter (comes with all/most micro SD cards) then you can swap cards with no soldering

[brainmedley]

FWIW a dual-row header works great for this. A couple tricks: I built mine with a dual-row header with roughly equal length pins so one side can grip the card while the other side is still long enough to plug deeply into a breadboard, also I bent the tips of the pins up first, then used a nail that just fit between the rows to make the "lower" bend, finally I slid a metal ruler in between to pry back open the gap so I now have a good - but not too tight - grip on the card. I found 8 or even 9 (x2) pins makes it easier to ensure that pin 7 doesn't get out of alignment. Thanks for bringing to my attention how easy it can be to use SD cards - I finally have a use for the 16MB(!) SD card that came with my camera so many (4) years ago.

[Kroden]

Glad you had luck with a double row header. I thought it might be possible, I just didn't have any to try it out with. I might try that 8 and 9 pin adjustment too, sounds better than risking a short. Thanks for the suggestion! And glad you could use the 16MB, thats the same capacity I was using.

[jewelzc4]

Great Stuff, Very MacGyver. Also you got posted to MAKE blog

[Kroden]

Thanks! I hear those MacGyver comments a lot.

[clone 452326]

id just go out and get a cheap sd adapter then solder the pins to it so it would be more sturdy

[fin saunders]

I'm more of a mechanical than ah, an electronical guy. So could you clarify that you are soldering both rows of two row pins to the single row. It looks that way to me, but I'm not sure. If that is the case, is it a concern that accidental contact with the backside holding/bracing pins could have a tragic influence on the CD card/arduino board? Just asking as a casual observer. Fin A bit of electrical tape folded over the pins or some other type of insulator to cover the backside holding pins could be cheap insurance against stray voltage, etc.

[kintekobo]

A small tweak would be to solder to a Mini-SD card adapter then you would be able to use it with Mini-SD's without having to solder to them.

[Khord]

This Instructable is an adapter - not soldered. The cards are removable.

[kintekobo]

You were ahead of me! :-)

[gerrit_hoekstra]

Brilliant in its simplicity!

You are right to hold the pins in a metal vice in step 5, so that the excess heat from the soldering operation can be dissipated, lest the plastic melts into a gloopy mess. (Past, failed experiences have taught me this!)

[raykholo]

totally agree with u there just sucks when u try to desolder a header and then the heat makes the pins fall out...

[Kryptonite]

Very nice I must say! Just curious, but what is this circuit you use it on? I'd love to do this but I don't know what I'd use it for, or how to make it.

[Kroden]

I'm using it as storage for a large file for datalogging. The Arduino can log data through the SPI interface with an SD card. I'm very new to this and am a little lost (im making my way through), but there are a bunch of projects with the arduino that use an SD card for mass storage. There's an mp3 player, a GPS that logs position, all sorts of stuff. Mine logs aceelerometer data, and then I can graph it in excel.

[Kryptonite]

Very nice, do you have plans to make one into an Instructable? I'd love to see it.

[Kroden]

I added another step, it has a pinout for the card, as well as a right angle, flat, PCB socket instead of a breadboard socket. It used the PCB as the backing, is very robust, and holds the card well. Thanks to frollard for the inspiration!

[jolshefsky]

Could you add a step with a list of the SD card pins and why you don't need the outer two? Otherwise, this is very innovative and clever. Great job!

[Kroden]

I added the pinout to step 8, new!