Questions tagged [connection]

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

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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 ...
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20 views

WLAN symbol is ambiguous and looses connection [closed]

I have some problems with my WLAN connection since I changed my network because of a new router. Before its IP was 192.168.9.xxx now it is 192.168.1.xxx Now I loose multiple times a day my connection ...
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30 views

Raspberry pi 4 does not show on HDMI Monitor or TV

I have a Raspberry Pi 4 and have not managed to get a display on it through HDMI. I have tried 3 different cables, a standard HDMI to HDMI with a connection adapter, a new cable specifically for the ...
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2answers
45 views

How can I connect Raspberry Pi to L293D motor driver shield?

I am new to Raspberry Pi and I'm trying to connect my Raspberry Pi 4 to an L293D motor driver shield. I have scourged the internet for circuit diagrams but I have only found either L293D IC or L298N ...
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1answer
34 views

ubuntu server nmcli is not showing ssids

I have raspberry pi 4 with ubuntu server 64 bit installed. I'm trying to connect my pi with another wifi but unable to connect. I used netplan to connect with first wifi successfully connected. but ...
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3answers
35 views

Ways to connect touchscreen to rpi zero

I understand a touchscreen can be connected to the rpi zero either via the dsi interface and a short ribbon cable, or through HDMI and USB. I want to place the rpi at a different location than the ...
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1answer
54 views

Can't connect to a remote MySQL Database

I am running 2 Raspberry Pi3 (STRETCH, JESSIE) and a web server (PHP5, MySQL, PHPMyadmin, Apache2) on stretch. I have everything working as expected. However, I need to be able to connect to my MySQL ...
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2answers
48 views

POE connectors on RaspberryPi

There seem to be jumpers to connect POE into the RaspberryPi. I have a case with two little fans which are meant to connect to the GPIO. I think they could be connected to the pins of the POE but I ...
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1answer
50 views

Raspberry pi 4 4gb, raspbian buster, stalls every minute using external wifi dongle

I am having a strange issue with my Pi 4. Every minute around second 47, it 'stalls' for a few seconds, like some process is going on. The CPU spikes and pings to the router are delayed. I am running ...
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1answer
94 views

Connect Pi4 to TV Hitachi (mid 2000's) HDMI

trying to connect Pi4 to a Hitachi TV (pretty old - mid 2000's), however it has the HDMI port. So my Pi4 is connected. SD card is with OS's on it. Any idea why Pi4 is not booting up? I have ...
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2answers
323 views

Can't Connect to Pi: “ssh_exchange_identification: read: Connection reset by peer”?

I suddenly can't connect to my Raspberry Pi from my laptop. In Terminal, I try to access with the command ssh pi@192.168.XX.XXX and I get this message: ssh_exchange_identification: read: Connection ...
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1answer
84 views

Connect IP Camera to Raspberry Pi 4 through direct ethernet connect

So we have 3 things: Raspberry Pi 4 IP Camera Ethernet cable We just want to connect the IP Camera to the Raspberry Pi 4 using the ethernet cable directly. Not through any router, switch, network or ...
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30 views

PiVPN client cannot access internet but can remotely access local storage

i have setup PiVPN. Before setup, im connected to dedicated ip purevpn (just to use open port service for openvpn). The problem is, the openvpn client can connect to config file and can access to ...
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1answer
44 views

ssh Permission denied // RPi 3 Model A+ macOS Mojave

I'm trying to access my RPi 3 Model A+ from my mac (Mojave) through ssh. They're both connected to a 5GHz wifi. From the mac terminal, I type the RPi ip address, then the default password raspberry , ...
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1answer
750 views

How to connect 3W 8Ω speakers to Raspberry Pi 3.5mm audio jack?

I have a pair of 3 Watt 8 Ohm speakers. https://www.amazon.in/JST-interface-Production-Raspberry-Projects/dp/B0738NLFTG My questions: I want to connect it Raspberry pi 3. How can I do that? From ...
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1answer
37 views

What can I do to avoid an 'Error: unrecognized option -mmcu=avr5' when I try to Verify sketch in Arduino IDE on Raspbian?

I have Raspberry Pi 3 Model B and Arduino Uno board, and I intend to make them communicate via Serial port connection. I've already faced some problems with my Tools -> Serial Port greyed up before, ...
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0answers
68 views

Connect the Raspebrry pi to WiFi from another device

Is there anyway to connect the raspberry pi to WiFi from another device like from a flask app? I know it's a crazy idea, without connecting to a network I cannot access flask app but I'm just ...
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1answer
39 views

Connecting two raspberry's to a server using Ethernet to USB dongles: I can only access one at a time, how to access both?

I have a white and a black raspberry I am trying to connect to my server using a Ethernet to USB dongle (the usb part goes in the server). [xxx@localhost]$ lsusb Bus 002 Device 001: ID 1d6b:0003 ...
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0answers
41 views

How to connect “FPV Night Vision QVGA 320X240 Monocular” to raspberry 4?

I am working on a project which need this module to be connected with raspberry pi 4 or 3. I tried some to convert into single RCA cable (worked) but I want to convert it into HDMI. I am unable to ...
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102 views

Problem with DIY Smart Glasses Projection module

I am making Smart glasses which will display android app, click pictures, notifications and many more, and which is to be displayed on a small prism I searched a lot of posts online, many of then ...
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1answer
45 views

Creating an app to connect to Android

What I want to do: I am working on a project, where I need an Android smartphone to connect with my Raspberry Pi 3b+. after connection, I need to control some GPIOs of the pi with my phone, and input ...
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1answer
82 views

Raspberry Pi 4 wont connect to 2.4ghz WiFi

I am attempting to connect to my RPI 4 to a 2.4GHz wifi signal, but it doesn't connect or provide any error messages. Instead it just remains disconnected. Oddly enough, connecting to any 5GHz signal ...
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3answers
199 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 ...
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1answer
555 views

How to print list of availble networks and connect using python

I have been search for a couple of hours to find a a tutorial on how to show the list of available networks and connect to a network programmatically.I don't want to use command line. I have ...
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1answer
264 views

Raspberry Pi 4 Wifi disconnected after change screen resolution

I'm having some problems with Raspberry Pi 4... The wifi works normally when I use 1920 x 1080. But when I change the resolution from 1920 x 1080 to 1280 x 720, the wifi suddenly disconnected and ...
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1answer
42 views

Connecting and displaying Raspberry Pi on Ubuntu based machine over ethernet cable

Hello dear Raspberry community. I was wondering if I could display Raspberry Pi 3 Model B on my Ubuntu laptop over an Ethernet cable? However, I can not do it with an ssh method, the reason being I ...
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0answers
31 views

PI Camera not lighting up when connected to CSI Camera connector but does light up when connected to DSI Display connector

I've purchased a PI Camera Module for my Raspberry PI 4+. I connected it to CSI Camera Connector, applied all necessary updates to the Pi but could not get the camera to be detected when using ...
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2answers
194 views

Raspberry Pi backup 3G USB modem - can't connect

I'm trying to configure 3G USB dongle as backup solution to WiFi. Using Raspberry 4b, latest raspbian in which seems usb 3G dongles automatically converted to modems as I see. So I'm skipping usb-...
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0answers
54 views

Connect to wifi using custom iPhone/Android app without SSH [closed]

I'm new to this and would like to ask a question. Is it possible to connect raspberry pi zero w to wifi like this: https://youtu.be/9yTg-iWPy28?t=84 or https://youtu.be/2l3NBCWbjwk?t=15 I want to ...
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0answers
113 views

Python script to search and get files from NAS [closed]

I am trying to use my RaspberryPi as a photoviewer, using the thousands of photo's from my NAS. I've build python scripts to show a random selection of the photo's. The NAS is not allways up, so my ...
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0answers
183 views

Pi zero w BLE connection disconnects

I have some strange problem with connection between raspberry pi zero w and BLE device (electric scooter). When I try connect to ble device via bluetoothctl service it connects properly but ...
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1answer
64 views

Over WiFi, I can establish a SSH connection but there is no internet connection

As described in the title, I can connect to my raspberry, via SSH connection, but raspberry has no internet access. All of this is done through an WiFi connection (Windows PC <--> Router <--> ...
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1answer
33 views

Can't make an SSH connection to Raspberry Pi

So I tried to make an ssh connection with my raspberrypi (running raspbian ) over ethernet. This used to work but somehow it doesn't anymore. I think the issue is that my raspberry pi can't get an ...
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1answer
106 views

Not everybody can connect to the wifi?

I made a configuration with this config : 2 WLAN, 2 SSID, Dongle + integrated wifi on Raspberry PI 3B+ Everything is working except, not everybody cannot connect to the wifi. Samsung Smartphone ...
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21 views

My Rpi can't connect again using Putty and VNC

I'm totally noobie in this area. I'm learning to use my RPi 3 model B. So at first I used it with my PC using tutorials in the web through Putty (SSH) and VNC viewer and everything worked fine. Then I ...
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3answers
910 views

How can I connect a Raspberry Pi 3+ with a MacBook Pro 2018?

I would like to access my Raspberry Pi via SSH and am not sure how to connect it to my MacBook Pro from 2018, given that it only has USB-C ports. My idea was to buy a crossover Ethernet cable and an ...
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0answers
45 views

Slow Network throughput of raspberry pi-4 [duplicate]

I have setted up samba server for NAS in my raspberry pi 4. The external disk is USB 3.0 and is working fine. sudo hdparm -t /dev/sda shows speed around 120 MBytes/s nperf also shows link of around ...
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0answers
275 views

SSH Connection refused on headless install, ssh file not deleted - tried everything?

I have the old Raspberry Pi B. I flashed the latest Raspbian Buster (headless version) using balenaEtcher (macOS). After that, I've connected the SD card again and created a ssh empty file on the boot ...
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0answers
143 views

USB-HID API on RPi Zero? Pro-Controller-Emulation on the RPi

So currently I wanted to connect the RPi to my Nintendo Switch to have it play a specific series of inputs. After some research I found out others have already achieved that, but on Teensy & co ...
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0answers
46 views

Raspberry PI 3 B+ with 3G Pilot

Ive been trying to setup a 3G internet connection for my Pi using the Pi: PiloT. I keep getting and ERROR on the minicom window when i run the command AT+XCEDATA=1,0, in order to start an IP session.....
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1answer
54 views

WiFi Connectivity Issue

I have a Raspberry Pi 3 (Model B). I want to use it as a terminal to operate a CNC machine as it has a Web Interface (Duet WiFi). I just need something with a browser and internet connection. I first ...
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0answers
189 views

Raspbian 9.9 Stretch - Network is unreachable

I have pihole(with DHCP server enabled, router DHCP server disabled) and SMB running on my raspberry pi, and my network interfaces are acting rather strange. From my raspberry pi, I can ping my router ...
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0answers
50 views

Windows how to share mfc-7360n printer to Raspberry Pi 3 with cups

Brother MFC-7360N printer connected via USB to Windows 10 computer. Both Windows and Raspberry Pi are on the same local network. Raspberry Pi needs to be able to print to this printer. Followed these ...
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1answer
40 views

Share WiFi from Raspberry Pi 3 B+ to iPhone

I want to share the WiFi from my Raspberry Pi 3 B+ to my iPhone but I don't know how. How can I achieve this?
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2answers
166 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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0answers
70 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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3answers
518 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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0answers
240 views

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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0answers
95 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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0answers
17 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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