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WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Mon Oct 07, 2013 4:30 pm
by crystal13
Hi to all,

I'm looking for a USB wifi adapter for Raspberry.

I saw that there are two types of USB wifi adapter:
1) adapter based on chipset RT5370
2) adapter based on chipset RT8188 (e.g. Edimax or TP-LINK)

The 2) I read that is plug&play for RPi, so there is not problem.
The 1) I read that is difficult to install on RPi.

Because the 1) is cheapest of the 2), do you know if 1) can runs anyway on RPi installing what it need?

Thank you very much in advance.

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Mon Oct 07, 2013 5:02 pm
by Oakham
With the latest Raspbian Wheezy the Ralink RT5370 works OK.

Though personally I have had more reliabilty from the Realtek RTL8188 in Linux

http://elinux.org/RPi_VerifiedPeriphera ... i_Adapters

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Wed Oct 09, 2013 9:53 am
by crystal13
Ok thank you.

At this link:
http://elinux.org/RPi_USB_Wi-Fi_Adapters

is reported:
Note: A Wi-Fi adapter will probably need more power than the Raspberry Pi USB port can provide, especially if there is a large distance from the Wi-Fi adapter to the Wi-Fi Access Point, or it is transferring large amounts of data. Therefore, you may need to plug the Wi-Fi adapter into a powered USB hub.

So, is really needed of a power hub for these usb wifi adapter?
do you know how much current is provided by USB port of RPi and how can see how much current is absorbed by the usb wifi adpater?

thanks!

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Wed Oct 09, 2013 2:55 pm
by PaulCheffus
crystal13 wrote:Ok thank you.

At this link:
http://elinux.org/RPi_USB_Wi-Fi_Adapters

is reported:
Note: A Wi-Fi adapter will probably need more power than the Raspberry Pi USB port can provide, especially if there is a large distance from the Wi-Fi adapter to the Wi-Fi Access Point, or it is transferring large amounts of data. Therefore, you may need to plug the Wi-Fi adapter into a powered USB hub.

So, is really needed of a power hub for these usb wifi adapter?
do you know how much current is provided by USB port of RPi and how can see how much current is absorbed by the usb wifi adpater?

thanks!
Hi

I have an Edimax EW7811UN (RT8188) plugged directly into my Pi (original version with the polyfuses on the USB) and it has been rock steady since I started using it. This Pi is powered by a Blackberry charger 700mA.

Cheers

Paul

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Wed Oct 09, 2013 3:01 pm
by crystal13
Thank you Paul.

the polyfuse is present only on Raspberry Pi Rev1?

What can cause the absence of the polyfuse?

thank you very much.

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Wed Oct 09, 2013 3:21 pm
by SirLagz
I've only ever used RT5370s since I got my first Pi back when they were first released. Never had any issues installing / using them.

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Wed Oct 09, 2013 4:31 pm
by PaulCheffus
crystal13 wrote:Thank you Paul.

the polyfuse is present only on Raspberry Pi Rev1?

What can cause the absence of the polyfuse?

thank you very much.
Hi

The polyfuse for the USB (not the main F3 polyfuse) was removed in the later versions (first replaced with a 0R resistor then completely removed).

Cheers

Paul

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Wed Oct 09, 2013 5:04 pm
by crystal13
Ok perfect.

@SirLagz: please, can you tell me where did you buy the adaptor with chipset RT5370? (I would like to know the brand).
Also via private message, if you want....

Thank you to all!
Gianfranco

Re: WIFI chipset for Raspberry: RT5370 or RT8188?

Posted: Thu Oct 10, 2013 12:17 am
by SirLagz
I just bought some generic ones off eBay
Though the Tenda W311M adapters use RT5370s too