Questions tagged [connection]

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

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21 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 ...
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61 views

Should I buy a pi zero with my Pi 4 4GB

I am buying a raspberry pi 4B with 4GB of ram and I was wondering what the connectivity between raspberry pi 4 and Pi Zero is like? Do they communicate well? and what software do you suggest? Is ...
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2answers
47 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 /...
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Client can't connect to pivpn

I have a custom setup and wish someone could help. I have a main router(R1) and a secondary router(R2). I will refer to main router as (r1) and secondary router as (R2). (R1) is used for home ...
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25 views

Can't SSH into raspberry pi 3 A+ when connected to router

In my Office, we have a network domain. On this network, we have a router that is connected from the network to the router using Ethernet (duh). My raspberry pi 3 A+ is connected using WiFi to this ...
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14 views

Extremely low connection to my projects from WAN

I own a Raspberry 3 b+ connected by WiFi. I'm storing my Codeigniter (php) projects there, but it takes a very long time to load any of these projects from WAN. I'm using NO-IP to access the ...
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17 views

How to attach two raspberry pi zero w together with sepatate independent displays?

How do I attach two raspberry pi zero w's together with sepatate independent displays to function as "one computer with extended display on two panels"? The two displays are HDMI with usb touch (7 ...
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17 views

PiVPN on Mobile Device - Wifi Drops and the Phone Reverts to 4G [closed]

I recently installed PiVPN. Although it works, I have noticed that after about 20-30 seconds of 'screen off' time, the phone's connection will drop from wifi to 4G. This only happens when I am using ...
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28 views

Build/Buy 128 Button Matrix

I want to build a system where roughly 100 Buttons can be pressed and start a specific command. Pricecly I want to digitalize a good old Piano, at least as good as possible. As far as google led me ...
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1answer
38 views

Cannot ping Raspberry Pi 3 b+

My Raspberry Pi 3 b+ will not allow me to ping it even though I've ping'd and ssh'd into it plenty of times before now. I can ping my main computer from the pi but not the other direction. ping ...
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2answers
82 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)...
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102 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 ...
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1answer
27 views

Connection via Ethernet to Windows

I'm having an issue with creating a direct connection with RPi 3 B+ and Windows laptop (to use as interface with RPi for first time set-up). I formatted the microSD card to FAT32 (Master Boot Record) ...
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1answer
126 views

Problem with auto pair a Bluetooth device

https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/test/simple-agent I tried the Above Python script but getting a dialogue box 'Pairing Requested'. How to remove that dialogue box?
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1answer
45 views

Raspberry Pi and localhost Connection

So I'm currently doing a project using Beacon and Raspberry Pi. The raspberry pi collect the UUID and RSSI of the Beacon and send it using socket.io to the server ( localhost-my computer) to save it ...
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1answer
40 views

Connect raspberry pi to an iphone app without port forwarding

For our capstone project, we have a python code that is supposed to detect the presence of a tile beacon, then we want that program to communicate with an iphone app built with swift letting it know ...
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1answer
59 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 -...
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2answers
120 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 ...
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1answer
30 views

raspberry pi zero w TWO wi-fi connections 1)dhcp 2)static

hello I need that my Pi automatically connect to wi-fi's 1) At home (by dhcp)-easy 2) at work (static IP DNS router)-don't know how it's extrimle easy to do that on armbian by configs /etc/...
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26 views

Using Raspi to spoof a site

I'm trying to make my RasPi to spoof sourceforge.net (referred to in the rest of this question as sf.net), because my phone has an app that connects to sf.net to download additional files, but fails ...
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1answer
34 views

How to connect two raspberry pi zero w's to ond HDMI display

Has anyone successfully connected two raspberry pi zero w's together to one HDM1 touch display (7" for example)? Any tutorials available for this?
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67 views

Connecting Computer without Internet to raspberry with Ethernet and send Information via MQTT

I'm trying to connect a Pc without internet with a Ethernet Cable to my Raspberry and want to send informations from the Computer to the Raspberry via MQTT. I searched trough the internet but ...
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1answer
44 views

Wiring on RPI3 when connecting two peripherals - microcontrollers simultaneously

I am currently having an ADC(MCP3008) connected to a rpi3, using the following wiring map, in order to read data from analog sensors. MCP3008 -> RPI3 VDD -> 3.3V VREF -> 3.3V ...
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2answers
63 views

Is this Solenoid Connection Correct?

I'm new to this Raspberry Pi. I'm trying to build this project: https://www.hackster.io/hitherejoe/braillebox-braille-news-reader-e86060 But the circuit diagram in it: https://hackster.imgix.net/...
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0answers
260 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 ...
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2answers
316 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 ...
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0answers
196 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 ...
2
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1answer
94 views

Raspberry Pi: Unable to access or ping after reconnecting any device to the local network

I have a raspberry pi that is connected to the network with DHCP. When I start it, I can ping it and connect to ssh through wifi. The issue is when I diconnect the device that I am using (my pc/...
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2answers
107 views

Programmatically SSH into pi on local network without looking up IP-Address beforehand?

I have a pi in my local network, and I sometimes want to connect to it via ssh. However, the pi always has a different IP-address, so I look it up beforehand each and every time. Is there a way for me ...
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1answer
2k 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....
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3answers
2k 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 ...
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2answers
118 views

How to change the wifi setting if not able to connect to device

I forgot what was wifi setting of my respberry -3. I want to connect that, but my device is not connecting to the wifi. Is there any way I can change the wifi setting of my device. I am able to mount ...
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1answer
52 views

Can't connect via SSH to RPi2

I have searched for old topics but I can't find anything that could solve my issue. I have installed Ubuntu MATE on SD card and created the ssh file on the boot\ directory. I connect the RPi2 ...
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0answers
175 views

Error connecting to Raspberry Pi 2 using xrdp

I have Fedora 28 MATE installed on a Raspberry Pi 2. I have xrdp installed and started/enabled on the pi, and have opened port 3389/tcp in the default firewalld zone. I am trying to connect to the ...
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1answer
35 views

Control Motor via Raspberry Pi connected to a Laptop (running code via PyCham)

currently working on a project with detecting objects via a Camera Module and controlling motors based on the camera detection (if object is in sector A, move motor B down, etc.) using Python. The ...
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2answers
96 views

Device discovery without wifi [closed]

In systems like Alexa or Sonos, the mobile app asks for location access and from there it tries to find the device. After that one is prompted to enter the wifi details and attach the device with the ...
2
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1answer
31 views

Raspberry Pi ZeroW - i can't acces from mobile (android)

I configured apache2 + php7 on Rpi Zero W, and I can access to the webserver using my PC by enter ip address of Rpi - but if I try to do that from mobile it fails... Raspberry and phones are ...
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1answer
63 views

At what instances do we use the Board mode and BCN mode in Raspberry Pi?

I know about the two modes of working in Pi using python, Board and BCN. However, I am really confused as to the instances or situations where I should use them. An example demonstrating their use ...
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2answers
455 views

Off grid communication

Over the last couple of weeks, I’ve become interested in off-grid communication, and I am currently looking into creating a simple communication protocol wherein multiple raspberry pi’s are able to ...
1
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1answer
63 views

Raspberry Pi controlled remotely by LAN but using alternate internet connection

My Windows laptop connects wirelessly to a LAN (with internet). My Raspberry Pi 3 B+ is wired to the same LAN. I can control the Pi from the Windows laptop using AnyDesk (remote desktop software). ...
2
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1answer
4k 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 ...
2
votes
1answer
487 views

Raspberry pi not detected using direct Ethernet connection

I am unable to use a IP scanner to find my raspberry pi when directly connected using Ethernet. (it worked like 1 month ago) If i connect my rpi into my router and which is then connected to my pc ...
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1answer
116 views

Setting up the Raspberry Pi for the second time and WiFi detection issues

I am a beginner. When I bought my Raspberry Pi 3B a week ago, I was told that they had already applied a set-up. I didn't know what it meant and I followed a tutorial to set-up the Pi for the second ...
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1answer
467 views

How to SSH Raspberry Pi from outside local network

I know this question has been asked many times but I could not get it running so I decided to ask it here. I have a Raspberry PI running on my local network which I can easily SSH it through my ...
2
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1answer
2k views

Connection to MySQL database does not work

I have two Raspbery PI 3 which I have installed (almost) identical. The configuration of /etc/mysql/mariadb.conf.d/50-server.cnf is identical for both Raspberrys. Problem: I can only connect to the ...
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2answers
1k views

wpa_supplicant connects to wifi but gets no ip

we are facing a weird issue. Basically, wpa_supplicant tries to connect to wifi network, and apparently succeeds, but it can get no IP address. We are using a Raspberry Pi Zero W to generate an ...
4
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1answer
660 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. ...
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1answer
100 views

Using Raspberry pi as I/O Board over the Network [closed]

I was trying to set up Jasper on my Raspberry Pi. While the programm was running fine I wasn't quite pleased with the performance. So i was thinking to run Jasper on a more powerfull machine and the ...
0
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2answers
190 views

Raspberry Pi: Automatic wifi connect without entering SSID, password

I am working on a project in which the Raspberry Pi kit will be shipped to the customer site. However, I am stuck at the question how to get the kit online, so that it can communicate with the ...
0
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2answers
125 views

To what pins should I connect 4 digits 7 segments display? [closed]

My display model is: 5641BH with common anode. It have 12 pins. 0.56" THT. Power range: 5 - 10mA (max 20mA) I have Raspberry Pi 3 model B. + T-Cobbler Plus. How the hell connect this thing.. In ...