Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Questions tagged [wifi]

Questions on the use of Wi-Fi (local area wireless computer networking technology). This tag is also used for generic "wlan" questions since they are commonly synonymous. Note shopping questions are off-topic.

Wi-Fi is a local area wireless computer networking technology that allows electronic devices based on IEEE 802.11 standards to connect to a network. A more general use of the term includes all wireless local area network (WLAN) even without complete Wi-Fi Alliance interoperability certification testing.

If you have a question about WLAN technology that is explicitly not wifi, look for or create an appropriate tag.

2214 questions
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How to set WiFi network priority?

I understand that I can set up multiple WiFis by adding to /etc/wpa_supplicant/wpa_supplicant.conf (as prescribed in Setting WiFi Up Via The Command Line). Let's say I have two WiFis registered: wifi_A and wifi_B When I unplug router wifi_A, and…
user2926577
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5 answers

Raspberry Pi Zero W keeps deleting wpa_supplicant.conf and ssh file

I am trying to headless setup a Raspberry Pi Zero W. I have added the wpa_supplicant.conf files as suggested. network={ ssid="My WiFi 2.4" psk="mypassword123" key_mgmt=WPA-PSK } I have also created an empty ssh file. However, the…
Jenny
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21
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4 answers

Does the BCM43438 WiFi chip in Raspberry Pi 3 support "monitor" mode

Does it support the monitor mode (known from aircrack-ng & co.)?
Marcel
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16
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3 answers

Can RPi4 run simultaneously on dual band (WiFi 2.4GHz / 5GHz)?

I read in the post that RPi 3 could not manage to operate on both bands simultaneously. Can RPi4 do that? We are planning to create mesh network with Rpi nodes. With single band operation, the throughput drops drastically, as the node count…
vanangamudi
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7
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1 answer

Is it possible to use Raspberry Pi 3 B+ Dual Band WiFi Simultaneously?

Few days ago i saw specifications of the recent revision of raspberry pi 3 B+ witch apparently claims it to have a dual band WiFi in 5GHz and 2.4GHz. my Lenovo laptop also has a dual band WiFi and as i run windows 10, i can use 5GHz to connect to a…
yekanchi
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6
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2 answers

How to build a directional antenna for a Raspberry Pi

I have been doing some research on directional antennas and I have found people are able to build a directional antenna using a Wi-Fi dongle and some cheap parts. My purpose is to build a directional antenna and mount it on my Raspberry Pi. Does…
Jone Jamson
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5
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1 answer

Bridge wlan0 and eth0 in layer 2

I want to use my Raspberry Pi as a bridge between eth0 and wlan0. My goal is to wire connect the Pi to my home router and to cast Wi-Fi with it, eventually getting access to the internet by this Wi-Fi (similar to hotspot but in layer 2). It's…
nano
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5
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2 answers

How do I connect to WiFi when it is grayed out?

I am using Raspbian. The WiFi options are grayed out for University networks but not for home networks. I think this might have something to do with the fact that the school requires username & password, while home networks only need password. Is…
Ryan
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5
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2 answers

How to connect to a headless Raspberry Pi A+?

I just got my A+. It does not have an Ethernet port. I'm having trouble getting a network connection so I could to ssh into it. Here is what I did so far: Inserted the pre-installed NOOBS SD card When first powered on, the LEDs were Green and…
Aleksandr Levchuk
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4
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6 answers

Is it possible to limit the bit rate on the BCM43438 chip via the BRCMFMAC driver?

I'm using a Raspberry Pi 3 as the platform for a project whose requirements include acting as a WiFi access point as well as connecting to a wide variety of WiFi routers. Unfortunately, the WiFi connectivity is very unstable. The most prominent…
Barry
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4
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2 answers

Pi-3 discarding ARP replies with link local address in IBSS ad-hoc mode

I have come across an issue with the Pi-3 internal Wi-Fi, when in ad-hoc mode. Setup is three PI-3s in ad-hoc mode, with Babel routing protocol and shncpd, to create a mesh network. Pi 'A' has been allocated an address. Pi 'B' has not yet been…
R Armstrong
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4
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2 answers

RPi auto-wifi configuration

I have a raspberry pi running raspbian. I got it connected to my home network via wifi without issue. However, after returning home from work with the pi (it was powered on the whole day), it did not auto-reconnect to the network. Here is my…
JolyDroneSP
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4
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1 answer

Wireless LAN no longer works since dist-upgrade

I have been using my Raspberry Pi 1 for over a year as a wireless bridge. I purchased a Pi2 and wanted to move the SD card across, but the first thing I had to do was upgrade the distro to support the new processor on the new Pi2: sudo apt-get…
fileinsert
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4
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2 answers

Wifi connection problems (different behavior with / without cables)

I'm experiencing issues with a couple Raspberrys. When setting up the boards, I plug them to HDMI monitor, keyboard and mouse. (no ethernet). I configure it to use wifi network and store that in the wpa_supplicant file. Rebooting the device works…
teuteuguy
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4
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1 answer

Wi-Fi adapters supporting monitor mode with Raspberry Pi

I have a Raspberry Pi and I want to use it for penetration testing of Wi-Fi networks. I want to buy a Wi-Fi USB adapter for my Raspberry however I don't know which one. I have read a list of Raspberry Pi supported Wi-Fi adapters however I don't know…
user2328620
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