I am hoping to use WiFi to talk to an Arduino in a situation where the Internet is not available. I was hoping it may be possible for an Android Tablet to communicate directly with the Arduino via WiFi. If it is not possible, then perhaps it is by use of a router, but without access to the web.
This is a difficult thing to search on, because there does not seem to be a way to distinguish it from among the various WiFi Internet-of-Things articles that depend upon a server somewhere to make the connection possible. The D-Link uses a term for their WiFi cameras that can do this. They call it "WiFi Direct", but that doesn't seem to be a universal term.
Is this a viable thing to do? Perhaps with an Arduino Uno Wifi A000133?
Note that the A000133 is a .org product, and so the info is not really here on this forum much. But, now that cc and org have kissed and made up, this would seem to be the best place to go on this.
Is there a good resource where I can read about this topic? As I said before, Internet searches have proven useless without a way to narrow the topic down. Thou, it is also possible that I can't find it, because it simply is not possible to do what I want to do.
Check out Wireless access point - Wikipedia this link - I think what you are asking about is an "ad hoc" network from your description (you can find anything with Google in fractions of a second ... although it may take days to find the correct search term first !! )
The Arduino Wifi is just an UNO with a built in ESP8266 device to do the Wifi connection. Depending on what you want the Arduino to do you might be able to just use the ESP8266 directly as there are Arduino cores for this chip.
The ESP8266 can be set up as an access point so you can connect directly to it using Wifi and/or it can connect to your router.
Thank you very much for that bit of information. We will never replace people for helping with knowledge like this.
I did come across a posting on the .org web site. The guy was certainly not happy with is purchase, and there have been no reply to his posting.
I am starting to feel the same way as the author of that posting. I probably would be better off to pretend I don't have a Uno Wifi, and just find a good Ad-Hoc tutorial, and buy what they have, so I can follow them closely.
Riva, do you understand how the Uno Wifi manages the connection to the ESP8266. There is a schematic, but I don't see any information describing how the connection is controlled. Is it the same as if I had a separate ESP8266 connected to the serial port of the vanilla Uno?
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