Questions tagged [connection]

A connection describes a link between two systems where data can be exchanged.

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47
votes
2answers
91k views

Setting up WiFi and Ethernet

I'm struggling with my configuration of my Raspberry Pi. I want to achieve the following: eth0: will be used with a static ip and can only connect to the local area network (this will be my NFS ...
39
votes
1answer
92k views

"connect: Network is unreachable" on a working (connected) wlan0 interface

I finally managed to make wlan0 (an Edimax EW-7811Un USB WiFi dongle) connect to my router, but after an apt-get update I discovered that my Raspberry can't connect outside the local network. The ...
27
votes
1answer
6k views

Raspberry Pi Zero with Ethernet Over HDMI

The new Raspberry Pi Zero doesn't have any kind of wired Ethernet connection. Has anyone have tested if Ethernet over HDMI works? I did not find any info in the web or even what version of HDMI the ...
9
votes
2answers
124k views

Raspberry Pi 3 - internal Wifi wont connect to network

i'm rather new to Linux and all that, in fact the Raspberry Pi 3 i just got is the first Linux-only machine i ever had, running the latest version of Raspbian .. so here's my problem: I'm trying to ...
8
votes
1answer
17k views

Control your Raspberry Pi with the TV remote

I've installed XBMC on my Raspberry Pi, which is connected to my Samsung SmartTV via HDMI cable. Everything worked as expected, the XBMC has been installed and showed up on my TV screen. The strange ...
8
votes
4answers
31k views

Ethernet and wifi together

I am trying to connect a web power switch v7 to rpi through the ethernet jack, and then connect the rpi to the internet through usb wifi. I looked at several QA, including this well voted one: ...
8
votes
1answer
56k views

Using python with bluetooth to communicate

I'm trying to write a simple program to communicate between the RPi and a bluetooth cellphone. I went with this tutorial: Bluetooth Python tutorial for RPi and was able to connect to the phone and ...
7
votes
1answer
19k views

Non-internet local Wifi network

Without the usual convenience of a home based internet wifi box, Is there a way to create/enable a local wifi connection between a Raspberry pi and mobile devices? I am thinking of a project which ...
7
votes
0answers
859 views

connmanctl having problem with complex passphrase

The built in WiFi module seems to work fine, as it can connect to both of my open networks I created for testing, i.e. the 2.4GHz, and the 5.0GHz ones. If I set a simple passphrase (i.e. contains ...
6
votes
4answers
15k views

How to use JSN-SR04T on a Raspberry Pi?

I want to try out JSN-SR04T, which is an ultrasonic distance measuring module, that is also supposedly water proof. The main reason that i want to try this module over the HC-SR04, is because the JSN-...
6
votes
1answer
27k views

Raspberry Pi 3 isn't finding WiFi Networks

I'm used to using RP2 with the WiFi dongles and I just picked up my RP3 which should work with the built in WiFi. However, upon running startx and trying to configure the WiFi, it merely states: ...
6
votes
6answers
12k views

SSH connection refused even though ssh file is in /boot

My image: 2017-08-16-raspbian-stretch-lite from here My Raspberry Pi: Raspberry Pi Zero W My computer: Linux (Fedora 26) What I did I followed the official instructions on how to flash the img to a ...
6
votes
2answers
230 views

Strange wifi behavior using raspberry pi zero as portable AP

I have a raspberry pi Zero with a 4 port USB hub attached to it (via pins on the back). The WiFi dongles that I'm using are twin Edimax EW-7811UN models. What I'm trying to use it for is Internet ...
5
votes
3answers
1k views

Connection between Raspberry Zero and Raspberry Pi 2 or 3

I need to establish a connection of four Raspberry Zero with one Raspberry Pi 2 or 3 to send videos filmed by the Raspberry Zero. The Raspberry Pi 2/3 should be the main and the others (Zero) would be ...
5
votes
3answers
5k views

How to connect Raspberry Pi Zero to PC

As in question - since the new Zero lacks any ethernet connection, what is the easiest way to connect the Pi to a PC, excluding connecting any USB WiFi? Is it possible to use MicroUSB directly? How ...
5
votes
2answers
2k views

How can I replace Raspian SSH host keys if I can't login to pi? ("connection refused")

After configuring a new Raspberry Pi Zero W, I have not been able to ssh into it over WiFi. The IP address is assigned and pingable, but I get 'connection refused' errors. After some research, I ...
5
votes
2answers
5k views

Edimax EW-7811Un Frequently Drops SSH Connection

I have an Edimax EW-7811Un plugged into my RPi's USB port. Frequently, when connected to the internet through the Edimax, my SSH connection drops or is very sluggish. I don't think I've had a ...
5
votes
3answers
8k views

Connecting to RPi from Linux with the ethernet cable without touching RPi

I have a Raspberry Pi 3 that runs on Raspbian and has SSH enabled. However, I don't have any monitor to connect it to (to set up WiFi connection), so my only chance to communicate with it is a basic ...
5
votes
2answers
701 views

How to find distance and direction of IR signal?

I am wondering where I should start in trying to get my Raspberry Pi to detect the distance of an IR signal and the direction of it. Has someone already done something similar? The end goal is to get ...
4
votes
1answer
8k views

How do I find out the IP address of my Pi?

So I do not have an HDMI monitor or any monitors around but I do have a computer with an ethernet port and I know that I can SSH to my pi via putty but the problem is that I do not know how to get the ...
4
votes
1answer
1k views

Not able to connect using Windows Remote Desktop Connection

I'm trying to connect pi using Remote Desktop Connection in windows via Ethernet. But it's not detecting. Also in network connection center ethernet is connected but showing as unidentified network. ...
4
votes
2answers
13k views

Unable to apt-get update but connected to internet?

So I got a pi 3.0 and it has been running a apache webserver with php just fine. I have not logged into it in a while. Today, however, I was planning to install openvpn which failed to install. So I ...
4
votes
1answer
2k views

Connect to Raspberry Pi from Windows phone through Bluetooth

Is it possible to connect a windows phone application created in C# (or any other language) to raspberry pi through Bluetooth? I know that C# has Bluetooth library, thus you can make Bluetooth ...
4
votes
3answers
31k views

Can't figure how to identify WiFi adapter

I've got a Cisco Linksys wireless module AE1200 and I need to connect it to my new Raspberry Pi in order to connect wirelessly. When I type the lsusb command it appears but the flashing led is never ...
4
votes
2answers
2k views

Mute TV with HDMI CEC Raspberry pi

I am trying to mute my Visio TV with cec-client through my Raspberry Pi 2. I have enabled the CEC features of the TV and have successfully seen status and turned the TV on and off. However, when ...
4
votes
1answer
2k views

Simulated unplugging of Huawei E220 USB modem

I found out that my 3G modem keeps closing the connection every couple hours. I tried to set up a reset script, everything works fine and I know how to do it, with one little problem: The only way I'...
4
votes
3answers
12k views

How can I connect by raspberry using the tethering USB of my (android) phone

I have just installed archlinux on my new raspberry but the only way I have to connect it to internet is using the USB tethering of my Android phone. With my PC it works straightforwardly: I just ...
3
votes
4answers
738 views

Has anyone found a tutorial on reading info directly from a Kill-a Watt with the Pi?

I keep finding tutorials showing to connect some kind of wireless radio to the Kill-a-watt. I want to find a way to connect the Pi directly to the Kill-a-watt. Is the Pi's GPIO pins not capable of ...
3
votes
1answer
9k views

Clients cannot connect to pivpn server anymore

I have been using and enjoying pivpn for nearly a year now. I am running pivpn and Pi-hole on the same RasPi without issues until now. Recently I have not changed anything besides the occasional apt ...
3
votes
1answer
11k views

Connecting two Raspberry Pi's via Ethernet

I'm currently working on a project that uses a rpi to do controls and data acquisition on a hydroponics system. However, I want to use another pi as a webserver that would also host a database for the ...
3
votes
1answer
10k views

Can Raspberry Pi 3 connect to multiple bluetooth devices?

I plan to make a RetroPie gaming station using 8BitDo bluetooth controllers, and I need to know if i need to spend extra money on bluetooth adapters to support multiple connections for multiple ...
3
votes
3answers
5k views

SSH and VNC insanely slow on RPi 2

I have a Raspi 2. I just installed Raspbian on it but the SSH session is insanely slow. I type something in the terminal, on my laptop and it appears in 10 seconds. I installed X11VNC and ran it ...
3
votes
1answer
412 views

VPN + IP Route headaches

I followed a guide here to turn my raspberry pi into a vpn router for my PS3. Basically it uses the Wi-Fi connection of the Pi to share internet to the ethernet connection. It works perfectly on one ...
3
votes
1answer
186 views

raspberry pi suddenly incapable of verifying amazon ssl certificates

One of our raspberry pis running stretch suddenly, from one moment to the other, lost the ability to verify ssl certificates from servers. As far as I can see there were no reboots, crashes or other ...
3
votes
4answers
762 views

Raspberry Pi 3B+ BLE peripheral : Android can't retrieve services list, OK with iPhone and Win10

I try to make a Raspberry Pi 3B+ act as a BLE peripheral. I downloaded latest version (5.50) of bluez stack here : https://git.kernel.org/pub/scm/bluetooth/bluez.git. I execute provided examples in /...
3
votes
3answers
20k views

Raspberry 1, no wifi dongle detected (TP-Link TL-WN823N)

I just bought a wifi dongle: TP-Link TL-WN823N, because it was supposed to work out of the box with the rasberry. So, I have tried raspbian and now I am trying with OSMC. First of all, if the ...
3
votes
1answer
414 views

WiFi Edimax EW-7811UN down after Router Reboot

I'm running the RaspberryPi as a Server that is connected to the network over WiFi using the Edimax EW-7811UN Dongle. I configured the dongle according to the documentation, like opening configfile ...
3
votes
3answers
2k views

What is the maximum frequency to count the pulses?

I am new to Raspberry pi. I have an input of continuous pulses. Each pulse width is around 100 nanoseconds . I need to count the pulses for 100 microsecond. Is it possible to do this? Please ...
3
votes
2answers
1k views

Connect Xbox One Controller to Raspberry Pi

I know this has been solved (generally) for RetroPie, but I'm hoping to have a generic solution I can use for other purposes--like controlling robotics. And RetroPie dominates the conversation. Is ...
3
votes
1answer
256 views

I have an LED scoreboard that no longer connects with its remote, would it be possible to mod it to run over wifi being controled by a RPi

I was wondering if this type of scoreboard could be controlled by a pi wirelessly as the wireless remote has stopped working.
3
votes
1answer
1k views

SSH over internet. Connection time out

This question seems to come up a lot, but none of the answers seem to work for me. I'm trying to connect to my RPi over the internet, but when I try to connect over the internet (with putty) using a ...
3
votes
1answer
420 views

Raspberry Pi unreachable from network

2 days ago I've setup a Raspberry Pi 2 as a Mopidy player. It worked fine until today. I wanted to re enable the radio stream but I could neither connect via MPD nor the browser nor SSH (from 3 ...
3
votes
1answer
601 views

Connecting Raspberry Pis With I2C

I would like to connect 6 slave RPis to 1 master RPi via I2C. Has this been done before and is it even possible. I know the I2C interface on the RPi has 1.8K pullup resistors so having all of those ...
3
votes
0answers
550 views

How to connect CMOS image Sensor to Raspberry Pi

I'm wondering if it would be possible to take an image sensor out of an old camera and plug it in to a raspberry pi via the csi connector. For Example would it be possible to take one like this from ...
3
votes
0answers
955 views

Unable to shutdown Raspberry connected to UPS

I'm quite new to Raspberry world and I need you help :) I've configured my Pi as a small NAS and download station but I also use it to manage some sensors in my house, so I bought an UPS. The ...
3
votes
1answer
6k views

8x8 matrix of buttons

It is possible to connect 8x8 matrix of buttons to the Pi using 16 GPIO pins, 8 for rows and 8 for columns? What are possible alternatives of doing this?
3
votes
1answer
9k views

RPi 3 ad-hoc network to configure WiFi credentials

I need help finding a proper tutorial or project that can achieve the following: I want to create an ad-hoc network that could be used to configure the RPi 3 to connect to an existing wifi network ...
2
votes
3answers
3k views

reverse engineering: Transcend digital photo frame display to Raspberry Pi

I have a Transcend [TS-PF705B] digital photo frame lying around with me for a while. And since the day i got this unit, i always gave a thought to do some thing with, like hooking it up with my ...
2
votes
4answers
1k views

Can't detect a raspberry pi scanning my local network

I don't have a monitor which accepts HDMI, so my only way to log in my raspberry pi is through ssh on another machine. To do that, however, I have first to retrieve my raspberry pi's IP on my local ...
2
votes
2answers
4k views

Connect Android smartphone with Wi-Fi Direct to a Raspberry Pi

It is no problem to connect my Android Smartphone with Wi-Fi Direct to the printer at my home and print documents. But how can I use Wi-Fi Direct to connect the phone to a Raspberry Pi without a ...

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