I can connect two arduino uno via wifi?

I can connect 2 arduino via wifi?

The WiFi shield lets the Arduino connect to an existing network, wirelessly. If one of the Arduinos is a server, and the other a client, then, yes, you can get one to get data from the other.

If you have some other vision of what "connect" means, you need to share that.

It would help if the OP clarifies the question.
I dont know of an Arduino wifi shield that supports ad-hoc mode which is needed, if there is no existing wifi network present.

I suppose i can connect them with a wifi shield. I can`t connect without this? I mean, via a wireless router?

I can`t connect without this?

Sure. Just duct tape the Arduinos to the router. That will be just as effective as trying to do WiFi without a WiFi shield.

Yun Shield + Uno/Leonardo/Maga supported WiFi mode:

  • ap for Access Point
  • sta for managed (client) mode
  • adhoc for Ad-Hoc
  • wds for static WDS
  • monitor for monitor mode
  • mesh for IEEE 802.11s mesh mode

Setup Yun/Yun shield at adhoc mode

Are you now spamming for that company?

PaulS:
Are you now spamming for that company?

Setup Yun/Yun shield at adhoc mode

Arduino Yun is manufactured by...