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USB WLAN-Adapter for Raspberry Pi

Posted: October 10th, 2019, 3:36 pm
by PhilTheHill
I would like to build a Wi-Fi repeater/extender/access point based on a Raspberry Pi Model 3B+ with IPFire and an additional USB WLAN-Adapter.

The HCL for USB WLAN-Adapters https://wiki.ipfire.org/hardware/networking seems not to have been updated recently and I’m unable to find anything on the list available in the UK. I’ve got a TP-Link T2U Plus (Device ID 2357:0120) but there’s no driver in IPFire.

Are there any recommendations for a currently available (preferably 802.11ac/5GHz) USB WLAN-Adapter that is known to work with IPFire on a Raspberry Pi?

Thanks, Phil

Re: USB WLAN-Adapter for Raspberry Pi

Posted: October 11th, 2019, 5:57 am
by Roberto Peña
Hello PhilTheHill.

I have a Raspberry PI 3B with two USB WLAN-Adapter. One as a Wireless Client (connecting to a Wifi) and another with the Hostapd (distributing Wifi) and doing very well.

The USB WLAN-Adapter I have is with the rt2800usb chipset and I have them set to g/n, I don't know if they will work in another way.

I put an image so you know what they are:
WifiUSB.jpg
WifiUSB.jpg (2.91 KiB) Viewed 1829 times
I hope it helps you.

Re: USB WLAN-Adapter for Raspberry Pi

Posted: October 11th, 2019, 7:13 am
by Arne.F
I know no working 802.11ac usb chipset. I use Ralink RT3572 modules (802.11a/b/g/n). But keep im mind that the RPi 3B+ has only a some DMA Channels for USB devices. If you get connection Problems remove the Keyboard to free one channel.

Re: USB WLAN-Adapter for Raspberry Pi

Posted: October 11th, 2019, 11:06 am
by PhilTheHill
Thanks Roberto, it does look like I can buy the ALFA from Amazon but ideally I'd like a more compact adapter.

I'm intending this Pi/Adapter would be located in a place where Wi-Fi reception is 'possible' but poor strength (thick walls, line of sight issues, etc.) so it would make WiFi more usable (and secure). We had this problem recently in a rented cottage which had WiFi from the main house but only in an awkward corner of the kitchen so couldn't use phone/tablet/laptop on the sofa or table.

The form factor of the TP-Link T2U Plus would be about right for this but if I can't find something simlar, the ALFA is centainly an option.

Thank you also to Arne.F for your comment regarding DMA restrictions. Once configured, I don't envisage the Pi will have a keyboard/mouse or monitor attached. The Pi 3B+ will boot with preconfigured networks on Blue (using onboard WiFi) and Green (on Ethernet) so all I should have to do is connect via ssh and configure Red for the available WiFi using the USB WLAN-Adapter.

Having deployed IPFire for our home network and Various Raspberry Pi devices around the home, it appeared a Pi/IPFire device could do a similar job in a more portable format and was an interesting project to persue.

Re: USB WLAN-Adapter for Raspberry Pi

Posted: October 11th, 2019, 1:29 pm
by Roberto Peña
If you are in the same electrical phase, have you thought about a PowerLine? They are two devices that send the network signal through the electricity network.

https://www.amazon.es/Dispositivos-red- ... APowerline

Grettings.

Re: USB WLAN-Adapter for Raspberry Pi

Posted: October 13th, 2019, 3:47 am
by PhilTheHill
I have used PowerLine (Devolo) adapters in some circumstances but in this use case I can't guarantee that a power socket will be available in the right place.

Unfortunately PowerLine adapters aren’t recommended to use with extension leads but could still be used for the Pi PSU to get the Pi in the optimal location.

But thanks for the suggestion.

Re: USB WLAN-Adapter for Raspberry Pi

Posted: October 13th, 2019, 2:54 pm
by Roberto Peña
Good afternoon

Have you considered the possibility of Devolo Gigagate?. They tell wonders of the system.

https://www.devolo.com/devolo-gigagate

Regards.