Those don't say how long they are, and they're also male headers. I found these ones from Adafruit but they're too short (10.5mm, like in my first photo). I wouldn't be totally opposed to using male headers, just as long as they're long enough.

I did something similar, a completely automated foosball scoreboard:



It uses a trip laser in the goal posts and an RF transmitter / receiver to communicate. You can see more pics / a video here:

http://www.reddit.com/r/arduino/comments/reh4h/arduinopowered_foosball_scoreboard/

EDIT: Found them. 6-pin version and 8-pin version.
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Hey all, I need some advice here.

I just got my first Arduino shield back from the fab and I'm pretty excited about it. I had grabbed some headers that were advertised as "long" and "stackable arduino headers" but I've found that they're too short (10.5mm). When I put my shield on top of an Arduino Uno the board presses against the top of the USB port. This is a problem because it can cause a short on my shield. Here's a photo:



The only other shield I own is an ethernet shield and its headers are really long (14mm). When I put it on my Uno, it has no problems touching the USB jack:



I found some extra-long headers at a local shop but they were so expensive - $1.10 to $1.20 for ONE 6 or 8-pin header. Adding these to the shields will add about $5 to the final cost, which sucks.

Is this a regular problem for people who design shields? Are there any places online I can get these "extra-long" headers? I tried looking around but found nothing conclusive. Should I include these extra-long headers when I sell them, should I include the "long" ones knowing they'll be too short for people, or should I let people buy their own headers completely?

I'm thinking about my first arduino project. Right now I'm just in the research phase, so I'm hoping I can get a little help here.

My project is to a visual notifier for text messages. The best way (I believe) to do this is by taking a bluetooth headset and hooking the earpiece to arduino. When I get a text, the bluetooth headset will play a sound (or rather just a tone, this might be easier for the arduino to recognize), and the arduino will recognize it and activate an LED until I press a button to clear it.

Does anyone see a flaw in this? Would the Arduino be appropriate for this? Thanks in advance.