Mystery component on Yun board?

by trelease@ucla.edu on Thu Sep 19, 2013 2:39 pm

Thanks! Just received my Yun from Adafruit and am getting ready to set up the WiFi...

Say, what's that 'mystery component' on the front of the board, at the upper right corner of the MIPS shield? Looks kind of like a micro switch with the button missing--shown on the Arduino layouts and images on your site and Arduino.cc, but not openly identified. Could it be something like an external antenna connector for the WiFi, or is that just wishful speculation?

Cheers!

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Re: Mystery component on Yun board?

by adafruit_support_rick on Thu Sep 19, 2013 3:48 pm

I sure does look like an external antenna socket, but we don't know anything about it. Maybe ask over at the Arduino forums...
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Re: Mystery component on Yun board?

by trelease@ucla.edu on Thu Sep 19, 2013 7:22 pm

OK. Here's the reply from the Arduino Forum: http://forum.arduino.cc/index.php?topic=188976.0

Re: Mystery component on Yun board?
« Reply #1 on: September 19, 2013, 10:53:17 pm »

you guessed right. It is an antenna connector to extend the WiFi range.
The form factor of this antenna connector is called "U.FL"
(Federico Vanzati
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Cool!
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Re: Mystery component on Yun board?

by trelease@ucla.edu on Thu Sep 19, 2013 7:41 pm

PS

Which means it could be used with one of your antennas (http://www.adafruit.com/products/944) and the adapter cable (http://www.adafruit.com/products/852), yes?

That ought to give some more range for those roaming WiFi robots, etc.

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Re: Mystery component on Yun board?

by adafruit_support_bill on Thu Sep 19, 2013 7:44 pm

Have not tested that combination myself, but it should work.
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Re: Mystery component on Yun board?

by mpechner on Sun Mar 23, 2014 11:33 pm

Has anyone gotten the u.Fl adapter to work?
It does not seem to fit.
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Re: Mystery component on Yun board?

by JimInAshland on Fri Mar 28, 2014 11:20 pm

I coaxed/forced the Adafruit RP-SMA to uFL adapter [.../852] into the socket and attached a dipole antenna [.../945].
Running the included example "Signal strength sketch":YunWiFiStatus, I saw no increase of signal strength. Perhaps I damaged it when attaching it?

It may not be a U.FL connector after all?
just found this . . . http://forum.arduino.cc/index.php?topic=188976.0

hope that helps
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Re: Mystery component on Yun board?

by adafruit_support_bill on Sat Mar 29, 2014 5:22 am

Good to know! Thanks for posting your findings.
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