cheapest way to make Arduino wireless?

As topic says, cheapest way to make Arduino wireless?

There are a lot of different ways to make it wireless but no one is cheap enough for a student :)

Is there any hacks or trix(like fenora)?

http://www.sparkfun.com/commerce/product_info.php?products_id=8946

http://www.sparkfun.com/commerce/product_info.php?products_id=8950

$9.90 for the pair. Plus shipping and handling, or course.

Don't forget: 5) point-to-point, or point-to-multipoint, or multipoint-to-multipoint?

There's always the choice of an infra red link if it fits into the project.

I've successfully used an IR linked servo over a distance of a few meters and that cost pennies I cant see why a serial link can't be set up the same way.

I'm using my Eee laptop trough adhoc for controlling my arduino with apache server and php code simplex... only from php to arduino (on windows)

Heres something I made a while back. The seriously cheap arduino based remote sensor (SCABRS) ';

http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1253997649

I have noticed that on these forums, people often ask how to make a processor wireless when what they really mean to ask is how to make it possible to program the processor through a wireless connection, which is, of course, an entirely different matter.

Are you asking about how to hook up wireless communications between and Arduino and some other device, or about how to set up a wireless programming connection?

oh, i totally forgot my own topic sry :)

No what i asked was, if you know any devices or shields that are cheap to buy and hook up with my home wlan so i can controll things over my home network. serial to wlan devices or something ....

what i asked was, if you know any devices or shields that are cheap to buy and hook up with my home wlan

No, that's what you wanted to know: what you asked was how to go "wireless". Which, as you've discovered, covers a multitude of sins. :)

There's this shield, which fits some people's definition of "cheap". You can trade time for dollars by going with something like the fonera, or some other hackable gadget.

Unfortunately, WiFi modules are still expensive enough that there has been no rush to bring cheap shields to market.