Questions tagged [connection]

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

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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 ...
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1answer
815 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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167 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
75 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). ...
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1answer
57 views

Folding at home stuck on "Connecting"

Information Hello. I'm having some issues with the Folding@Home Client for raspberry pi. I am using a raspberry pi 4 with the 64bit version of Raspberrypi OS (Found here: https://downloads.raspberrypi....
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1answer
19 views

Bespoke Power Supply cable issue

I am trying to create an in-car (headrest) entertainment system using the Pi 3B with 7" screen using OSMC, when OSMC is shutdown it does not fully power off the screen, I can detect the shutdown ...
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31 views

Data transfer between Raspberry Pi 3 to Raspberry Pi zero

I connect the RC522 RFID reader to my Raspberry Pi3 (OS: Windows 10 IoT core) and the reading worked well. now I want to send cards data from my Pi3 to raspberry Pi zero (OS: Raspbian OS). How the ...
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1answer
33 views

Detecting connection between two arbitrary GPIO pins on Pico [closed]

I wrote a code that I run in Thonny which detects if a connection is made between the 3.3V output and a GPIO pin on the Raspberry Pico: print("Hello World!") import time import digitalio ...
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Access point works with cell and tablets but not other computers nor other raspberry pi

I have two weird situations. I configured my pi4-4gb to be an access point for a private network. The goal is to allow multiple pi-zero-w to connect to this access point and also allow, when connected ...
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2answers
566 views

Send data to pc over bluetooth or wifi

I am working on a project where i have a motion sensor connected to a arduino connected to a raspberry pi and when the motion sensor detects movement i turn of my Windows pc. I want to connect the ...
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2answers
282 views

How to interface to a Pi without knowing its IP or having a large HDMI monitor?

I wish to access a RPi's shell, but I do not wish to lug around some big display and ideally 120 volt power wouldn't be required. A Linux or Windows laptop are acceptable or maybe some other typical ...
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1answer
1k views

Raspberry Pi3 Jessie will not reconnect after ethernet cable re-plugged

My Pi3 running Jessie loses connectivity after unplugging and plugging back the ethernet cable. It's literally driving me crazy. Hope you could shed some light here. Wifi is disabled in /boot/config ...
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Error Connecting Raspberry 4 model B to Windows 10 Directly with ethernet cable

I received my Raspberry Pi 4 Model B yesterday installed latest Raspberry OS on MicroSD and have been trying to connect it to Windows 10 directly with a Ethernet cable "no hub or router" and ...
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4answers
2k views

Reaching my Pi with MDNS (Avahi)

I want to ssh into my Pi and I can do it right now with the ip address of the Pi. But I want to do it using mDNS. I want to connect using ssh raspberrypi.local. I read that this should work. on the pi,...
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1answer
924 views

Bluetoothctl connect TIMEOUT exception

This is the error I am getting when I connect to my mobile phone using the connect method in this documentation: https://gist.github.com/egorf/66d88056a9d703928f93, raise TIMEOUT(msg) pexpect....
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RPi-iOS communication over WiFi

Here’s my plan: have a python script running hardware pwm code for a brushless motor im using. The idea is to have an iPhone have an app where 1. The python code can be interacted with to adjust a ...
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1answer
69 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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1answer
1k views

8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter

Can connect to many routers with the usb wifi adapter but on some I get an error. When I do the wpa-suplicant manually with the -dd option I get [skip - no WPA/RSN proto match] for the AP I'm trying ...
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1answer
690 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
3k views

Usb_modeswitch doesnt seem to work in raspberry pi b+

I just purchased a raspberry pi b+. I want to connect to the internet using a 3g dongle (huawei ec152). I followed http://www.thefanclub.co.za/how-to/how-setup-usb-3g-modem-raspberry-pi-using-...
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29 views

Trouble setting up SSH "Connection Timed out" on Headless RPI 4

I've decided to enter into the world of HomeLabs with the acquisition of an RPI 4. I went throught the procedure of setting up the RPI and everything worked correctly. I've used both a(n) dynamic/...
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1answer
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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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2answers
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Timeout when connection to a page but ping works?

I'm getting a strange problem on my raspberry pi. I tried to install a program today using apt-get and I got this output: Err http://mirrordirector.raspbian.org/raspbian/ wheezy/main libcurl3 armhf 7....
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1answer
334 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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1answer
41 views

Connecting 2 Raspberry Pi's for Extra GPIO ports

For the project I am working on, i will need more GPIO pins than the Raspberry 4B provides. I'm looking into combining 2 Raspberry 4B's together to get extra GPIO pins. I also looked into port ...
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1answer
340 views

Connecting a Sensirion SPS30 PM sensor to RPi

I am trying to connect the Sensirion SPS30 I'm having trouble connecting it to my breadboard. This is the connection on the sensor. I am thinking that I need a 5 pin JST / Molex to plug into the ...
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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 /...
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2answers
163 views

(Another) Cannot SSH to Raspberry Pi from Mac -- Port 22: Connection Refused

So, as the title states, I cannot SSH to a Raspberry Pi from my Mac. I have done so in the past, but can't figure out why it won't work now. Unless stated otherwise, all devices I mention below are ...
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1answer
60 views

How to use a Raspberry pi as a WiFi-to-Ethernet converter?

this is my first question on this site. My problem is that i have an old PC lying around with no WiFi adapter but it has an Ethernet adapter. I want to connect my Raspberry pi to WiFi then connect it ...
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0answers
40 views

connection to port 22 refused before asking for username/pword

I've added an empty ssh file to the /boot directory. When I run ssh pi@raspberrypi.local, I get this error: ssh: connect to host raspberrypi.local port 22: Connection refused without being asked for ...
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23 views

Can I use this screen from a digital brochure with the Pi?

I recently received a kind of digital brochure that was just this large screen in a cardboard envelope. I ripped it out and I'm curious - can I drive this with a Pi? I tried looking for ribbon cable ...
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SSL certificate for multiple dock containers running on RPI 4

Hi guys I have a question regarding docker containers and ssl certificates. I want to install more than one docker containers like pi hole , Bitwarden and motioneye . To access them I have to type ...
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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 ...
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0answers
12 views

How to resolve Pi400 Linphone Connectivity Issues (intermittent quiet sound/microphone)?

I am trying to setup a pi400 for use in a call center setting and during testing I have identified a problem. Intermittently the connection quality drops and the audio goes extremely quiet for both ...
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1answer
32 views

SSH - Can't connect from LAN after switching to another network

A couple of days ago I bought a new raspberry pi 4, for now, I don't have desktop support but I set it up in headless mode (installed raspbian on sd card). I was able to connect it using ssh when it ...
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1answer
53 views

Only 8 devices can connect to my pi 4 [closed]

I conducted tests today with a Rpi4 4Gb RAM as a wireless access point and I wasn't able to connect more than 8 devices. But then I want to be able to connect at least 20 devices. Pls, help.
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2answers
2k 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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0answers
39 views

Pi 3A+ keeps loosing connection randomly

I'm trying to set my rPi 3A+ as a local server running a docker container that is constantly logging info from a service. (It's running Teslamate) I've been having trouble keeping it connected to my ...
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0answers
39 views

Raspberry Pi 3b+ loses WIFI connection after 10 minutes

My Raspberry Pi 3b+ loses WIFI connection after 10 minutes, after it loses connection, I cant re-connect because there are no WIFI networks in the dropdown list. My only option was to completely ...
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0answers
28 views

Wired network connection not working - 2 items in settings VPN and Proxy

I know everyone tries hard and it can't be easy. I'm on the edge of a heart attack or stroke myself just getting anything to ever work. I'm new to the Pi-niverse and am setting up a 4. Its having ...
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1answer
38 views

What's the best way to remote control a Raspberry pi - powered robot? [closed]

I'm going to build a robot powerd by raspberry pi and i wnat to control it remotely, the principal tasks that need to have a remote exchande of data is: the streaming of 3 cameras the monitoring of ...
2
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1answer
86 views

Can a Raspberry Pi boot a small OS/application off of a floppy disk?

Is it possible to develop a small OS/script for the Raspberry Pi that can boot from a floppy disk? If so what knowledge and tools would be needed to accomplish this? i.e. No sd card, just a floppy ...
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0answers
89 views

Failed to get D-Bus connection: Unknown error -1

Well I ran into a major network failure when I try to get two PIs talking to each other directly through their Ethernet ports. They use to connect to each other and communicate, but for some odd ...
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2answers
109 views

Can I use a Sanyo tv as raspberry pi display?

So I have a decently old Sanyo tv laying around, and I want to put it to some use. I intend on using it as a display for my raspberry pi. All in all I was just wondering whether such a task is ...
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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-...
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2answers
55 views

RealVNC Connection Problem

I have a question regarding RealVNC and the Raspberry Pi 3B. I can't connect to the Raspberry pi and I get following error message: "Timeout while waiting for a response from the computer". ...
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2answers
778 views

How do I make Barrier run on startup?

So every time I start up my raspberry pi I have to unplug my mouse from my main PC into my raspberry pi 4 and manually open up barrier so that I don't have to use 2 set of KB&M but I want to cut ...
3
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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 ...
2
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1answer
171 views

Bluetooth connection between Android smartphone and Raspberry Pi fails

A Bluetooth connection with a fresh flashed Raspberry Pi OS should work out of the box, at least with a Media audio profile. I can pair the smartphone and the RasPi but I cannot connect using ...

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