Questions tagged [connection]

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

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38
votes
1answer
84k 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 the Raspberry can't see outside the local network. My ...
46
votes
2answers
89k 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 ...
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 ...
3
votes
1answer
5k 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?
6
votes
1answer
25k 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: ...
3
votes
2answers
1k 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
3answers
17k 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 ...
2
votes
2answers
8k views

Electronics of a water pump [duplicate]

So, I would like to connect a water pump to my Pi and programatically turn the pump on and off. I am looking at this pump: http://www.cooking-hacks.com/immersible-pump-water-tube-for-open-garden-...
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 ...
8
votes
4answers
28k 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: ...
3
votes
3answers
10k 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 ...
1
vote
1answer
1k views

How can I connect to my Raspberry Pi 3 over SSH in this scenario?

I have a new Raspberry Pi 3 B 1.2 and I am trying to SSH into it. I don't have a monitor or an HDMI cable. I have already etched the img file with Raspberry Stretch onto a 64 GB SD card using Etcher....
8
votes
1answer
54k 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 ...
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 ...
1
vote
2answers
417 views

The best way to conect to my Raspberry Pi Zero W by MAC address?

I want to know the best way to connect my RBP by wifi using the MAC Address. I currently use sudo nmap -sn 192.168.0.0/24 and obtain this Nmap scan report for 192.168.0.114 Host is up (0.025s latency)...
7
votes
1answer
17k 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 ...
2
votes
2answers
202 views

How can I stay connected wirelessly online but also set the ethernet to a set ip address to connect to a piece of hardware

I am currently working on Raspberry Pi 3B+ (Stretch 9) and I have been stumped on how to be connected online wirelessly while also having my LAN port configured to receive and send data via a ...
2
votes
2answers
2k views

SSH not working when connecting from local network, but working when connecting from external ip

Raspberry pi has been having some erratic ssh and vnc performance, it just closes itself and do not let me reconnect, I need to restart it in order to do so. I tried connecting from my external ip, as ...
2
votes
1answer
148 views

Raspberry PI Laptop Ethernet Connectivity Issue

I setup my headless Raspberry PI and called it Optimus. I connect my Windows 10 desktop machine to the Raspberry PI via an ethernet cable. If I ping optimus.local I get a response and can SSH into it -...
1
vote
0answers
185 views

How to connect RPi 2B with SM900?

I have a Raspberry Pi 2B and a SM900 module and I want to make a UART connect with jumpers using raspberry GPIO and the shield pins. My problem is how could I make it? How to power up the SM900? I ...
1
vote
2answers
1k views

SPI SDA GPIO Rspi

Can anyone help me to connect more than 2 devices (other CE0 and CE1) and use any GPIO for the SDA pin?
0
votes
2answers
180 views

ssh in local LAN: works with IP, but not by name

On a local LAN, I am trying to ssh into a freshly installed Raspberry Zero WH, by host name. I am connecting from an Ubuntu box. The Rasbperry Pi does boot, and connects to the Wifi. I can see it in ...
0
votes
3answers
234 views

Unable to get IP address of Raspberry pi to connect via Windows remote connect

I borrowed the RPI 3B from a friend's friend. hence I don't know the hostname so that I can ping the RPI to know its IP address. Hence I am following this tutorial to get its IP address. According to ...
0
votes
2answers
321 views

Programming a Raspberry over SSH or Wifi?

So I am planning to host a discord bot on a raspberry pi zero w and I do have a spare monitor( for the programming part), but the monitor wouldn't work when I plug it in and I also don't have one of ...
0
votes
1answer
3k views

Wifi Not Working with Ubuntu MATE 16.04 and Pi 3b+

I was able to get Ubuntu MATE to finally run on my Pi 3B+ after following this tutorial: https://www.youtube.com/watch?v=tdJrd75_068&lc=z234tvgocvmqyzb5a04t1aokgml1ll00iwv1gbnt2da0rk0h00410....
0
votes
0answers
1k views

Share WiFi connection through ethernet

Using kali linux for this. I went into the "Network Connections" and created a new connection under "Wired" and set it to "Shared to other computers" under the "IPv4" tab and it doesn't work. When I ...
-1
votes
2answers
651 views

Internet connection impossible through PC via Ethernet

I have a Raspi 2B running Raspbian and I want to connect it to the Internet with an Ethernet cable via my laptop (which is connected with WiFi to my router). Unfortunately, I am officially connected ...
-1
votes
2answers
181 views

How can I connect 5 Raspberry Ppi's? [closed]

Can I connect 5 raspberry pi's with one another? If yes how? Can I use gpio's to connect or are there any other ways? I have a task where I need to connect raspberry pi and make them communicate ...