Questions tagged [connection]
A connection describes a link between two systems where data can be exchanged.
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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
28 views
Send data from raspberry pi to another raspberry pi
I'm currently working on a project where I have 2 RPIs both with multiple sensors e.g. dht22, sw-420, photoelectric IR optocoupler and they are connected to cloudMQTT. What I need is that the data ...
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1answer
33 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
37 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
106 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
149 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
29 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 ...
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1answer
35 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
48 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
436 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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Problem with WIFI Dongle D-link DWA-121 ID 2001:331b
Guys i've some problems with my wifi-dongle DWA-121, i've installed the driver module 8188eu and i can't get any ip address on my wlan0 interface. The wpa_supplicant.conf files and interfaces seems ...
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3answers
207 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
55 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
31 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
121 views
Connect RunCam to raspberry pi
Just recently I got RunCam micro swift 3 (https://www.runcam.com/download/MicroSwift3-Manual.pdf) for computer vision project. However, I am struggling to understand how can I connect it to Raspberry ...
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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
28 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
70 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 ...
1
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1answer
20 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
18 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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1answer
178 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 ...
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1answer
57 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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45 views
Pi Does not respond to SSH and ping wireless commands
Rasp. Pi Model B: Does not respond to SSH and ping commands via router. Always have to reboot physically by unplugging power cord USB and plugging it back. Any suggestions on how it can reboot locally ...
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1answer
2k 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 ...
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1answer
228 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
59 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
310 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
1k 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
636 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
393 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
62 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 ...
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2answers
116 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 ...
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2answers
102 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 ...
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0answers
87 views
RasPi not reachable from Android phone
I've been strugling with this problem for quite some time now, and i'm at my wit's end. I don't even have any idea what i could try to be looking for.
I have a raspi running with raspbian lite and ...
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0answers
545 views
OBD II Bluetooth Connection
I'm trying to connect an OBD II(ELM327) bluetooth adapter to my Raspberry Pi 3 for one of my projects but it keeps failing everytime I try it.
I have the Raspbian updated software. I made a C ...
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1answer
238 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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1answer
3k views
Using /dev/rfcomm0 in raspberry pi
I have paired two android phones to the Raspberry Pi 3. However when I attempt to execute a file it gives me the error:
[Errno 2] could not open port /dev/rfcomm0: [Errno 2] No such file or directory:...
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1answer
301 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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0answers
214 views
How to solve libreelec on raspi3 kicking me out of wifi on other devices
I'm running libreelec (only openelec tag exists so far) on my raspi3 and am really happy with it.
Via yatse app I can control it using my smartphone.
Unfortunatelly I'm often kicked out of my wifi on ...
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1answer
2k views
Enable Ethernet tethering with LibreELEC
I have my Raspberry Pi 3 connected to my WLAN with the on-board chip. Now I want to connect my TV's Ethernet cable (it does not have WiFi) to the RPi3 to connect to the Internet from my TV (Ethernet ...
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2answers
35 views
When connecting the sense hat using jumping wires, do I need to connect to a ground pin?
I want to connect the sense hat to a raspberry using jumping wires. I understand that I need to connect the highlighted pins in this schema of the pin out.
But do I also need to connect wires to a ...
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1answer
2k views
Send audio from one Pi to another- Same network
Beginner here.
The Goal:
Send audio source from one Pi to another over the same network.
Both Pi's will have a static IP and will be locked onto each other.
I've attached a diagram for ...
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1answer
33 views
Rpi3 tethering with mobile phone
I would like to give an internet connection to my rpi3 no matter where I am.
I have no screen and no keyboard for my rpi3, but I can modify the sd card in my computer.
I saw a lot of thread where ...
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1answer
500 views
How do I connect this anemometer to a Raspberry Pi? [closed]
I want to connect an anemometer to my Raspberry Pi 3.
I'm trying to use the Maplin N25FR Wind Speed Sensor.
How do I connect it to my Raspberry Pi?
I found this picture online, but I don't ...
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0answers
614 views
Cannot SSH into raspberry pi zero v1.3 over usb, “ssh” file keeps getting deleted
I have put the November 2017 version of Raspbian Stretch onto a micro sd. I created an 'ssh' file under boot, put dtoverlay=dwc2 in 'config.txt', and put modules-load=dwc2,g_ether in cmdline.txt. I ...
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2answers
3k views
Connect to Raspberry Pi 3 without ethernet and keyboard
I have a Raspberry Pi 3 without any monitor, keyboard or even LAN cable.
I only have a laptop with Ubuntu. Can I connect to Raspberry Pi 3 via wifi+SSH without ethernet?
I do not know the IP of ...
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0answers
48 views
Raspberry pi one as vpn router
I have a router that is connected to a modem. All connected devices have internet access through the router. I would like to connect a raspberry pi (version one, model B) to this network via cable, ...
0
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2answers
414 views
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
663 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....
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2answers
441 views
Controlling robot using raspberry pi 3 WiFi with no server, no web, no internet
I want to build a mobile robot with android as a controller from long range, I think it's best to connect using wifi, not a bluetooth because it's too short range.
My problem is
"how to connect my ...
