All Questions

0
votes
0answers
27 views

Play a sound with python [duplicate]

I am trying to play a sound at a certain altitude with my raspberry pi. I would use import winsound but I have no idea what I would use if it was on the pi. Would it remain the same?
1
vote
0answers
39 views

Odd characters in LXTerminal with RealVNC viewer

Image below shows the output from service cron status, via ssh on the left, LXTerminal via RealVNC on the right. Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/Linux ...
0
votes
0answers
16 views

Raspberry pi node: error while loading shared libraries: libl.so.6: cannot open shared object file: No such file or directory

I have a raspberry pi 3 which has been running a node JS script using PM2 for 6 months without issues . However yesterday it stoped working and gives me the following error : node: error while ...
1
vote
0answers
48 views

Why is my raspberry pi crashing? Reading DHT11 - Logging to text file with python

So, I'm pretty new to this. Want to play around with temperature & humidity sensors. I have a pi with 4x DHT11 sensors, on wires of ranging lengths hosted in different situations. I've written a ...
0
votes
0answers
11 views

Install USB Wifi to run in parallel on RPi 3+

This is a very similar question to one already asked, but it is different in that I want the USB dongle to provide internet access to the RPi while the RPi AP still operates. I am trying to set up a ...
0
votes
0answers
18 views

HD44780 Display and wiringPi

I have wired a display to the raspberry pi, which uses an HD44780 controller. The wiring was verified by using this python script: https://www.raspberrypi-spy.co.uk/2012/08/20x4-lcd-module-control-...
0
votes
1answer
21 views

How to restore SSH session after network failure on client PC [duplicate]

Sometimes my SSH session of my PC and Raspberry Pi is aborted, due to some network issues, eg. WIFI disconnected and connected back on PC. After that SSH client on PC (Putty) is saying that existing ...
1
vote
0answers
20 views

Regarding ttyS0 and ttyAMA0 of Raspberrypi b+

Is it possible to communicate at the same time with raspberry UART(ttyS0) port Rx and Tx and ttyAMA0 (inbuilt Bluetooth) Communication? In my current project, I am doing the serial communication of ...
0
votes
1answer
16 views

Controlling array of fans

So I'm building a stack of Pi's and the case I'm buying comes with four fans. I want to use a Pi Zero (ideally, but whichever one will work is fine) to control all the fans but I have no clue if this ...
0
votes
0answers
41 views

Raspberry Pi UPS with LiPo Battery

I have been working on a battery back up for my raspberry. The idea is classic: connect power bank to wall outlet and raspberry to power bank output. It works well with only battery power. But when ...
1
vote
1answer
21 views

Problem with public keys, installing libc6

I'm having trouble installing a dependency on libc6. I'm trying to follow the solution in this question but I get the following response from sudo apt update: Hit:1 http://archive.raspberrypi.org/...
0
votes
0answers
23 views

RaspberryPi as PPPoE server - issue in starting ppp service

All, I am trying to configure my RaspberryPi 3 B as PPPoE server (wlan 0 as wan and eth0 as lan). The below mentioned link is used to configure the PPPoE server and all the mentioned config provided ...
1
vote
2answers
88 views

Backup Raspberry Pi without empty space on macOS

I've got an issue with making the backup from microSD 16GB card. My Raspbian installation takes up 2GB and the other space is empty. When I tried to use dd on my MacBook, I've got an image with 15....
0
votes
0answers
17 views

console text written over plymouth splash screen

I have two RPi3s with Raspbian Stretch - one with RS Full and one with RS Lite. I have enabled autologin and our custom plymouth splash screen with "splash quiet" in /boot/cmdline.txt. Now I want to ...
0
votes
0answers
33 views

Several serial ports with c++

Trying to work on Raspberry Pi 3, Model B V1.2 with several serial ports with C++ code. Previously I should say that when I use only one ports everything works like a charm, so ports configuration is ...
-1
votes
1answer
44 views

Raspberry Pi Desktop, Guest Additions: Access denied under root

I've been trying to install Guest Additions for Raspbian Desktop on VirtualBox hosted on Linux. The script won't run even under root. How is it possible?
-1
votes
0answers
31 views

Connection guide for GT-521F32 Fingerprint Scanner and Raspberry Pi

I have this https://www.sparkfun.com/products/14518 There is a way to connect this with raspberry pi 3? I've searched around and I found only this Connection guide for GT-511C3 Fingerprint Scanner ...
0
votes
1answer
49 views

I can't change pin value

I've been with my new Raspberry for a month and it worked perfectly but today the pins have stopped working. I have tried many ways to put them with value 1 but for more I try not change them from 0. ...
0
votes
0answers
11 views

Using Java JNA and native library on Raspberry Pi

I am trying to use JNA on raspbian. I have installed libjna-java sudo apt-get install libjna-java When I run my java application I get an "java.lang.UnsatisfiedLinkError" for libjnidispatch.so. This ...
0
votes
0answers
15 views

2 way Socket communication over bluetooth using python

Is there any way to make communication with 2 RBI over bluetooth using python Socket? Do you have some tips how can i do it? Should i use multithreading? Right now i'm using this lib -> https://...
1
vote
0answers
16 views

Problem: Tor Router with a Wifi to Ethernet Bridge

I configured my Raspberry Pi 3 Model B to route all traffic from wlan0 to eth0. This works for me and I can connect my RPI to a Wifi-Network, connect my computer with the RPI through ethernet and I ...
0
votes
1answer
30 views

DNS issue with Static IP

The office network uses static IP addresses. I've cleaned up an issue related to creating a wireless access point and I reverted back to the static IP on eth0. I am having a DNS issue, I'm fairly sure....
0
votes
1answer
108 views

Turn a Raspberry Pi into a voltage tester

I would like to create a voltage tester like the one described in this video, using 555 ic, and then connect it to Raspberry Pi, in order to log the frequency a 220V waterpump is switched on. My ...
0
votes
0answers
14 views

How to disable all service messages on boot

i'm quite new to raspberry development and i've already tried as much as i found to get a really clean boot -> cmdline.txt adapted (changed console=tty1 to console=tty3; added quiet etc...) but no ...
0
votes
1answer
19 views

Dualboot second OS without formatting previous OS

My PI 3 is currently running NOOBS on a Class 10 SD-Card. I see tons of guides online, but they always note to format the SD-Card. I want to dualboot another OS like Kali or Android (Emteria) aside ...
0
votes
0answers
11 views

Identifying when Audio output is selected as Hifiberry Dac+

I am running Kodi on Raspi3 with Hifiberry dac+ . I need to toggle between external input to an amplifier v/s input from the DAC+. I am thinking of doing it based on the selection done in Kodi - ...
0
votes
0answers
25 views

Is it possible to make a video input to monitor Security system?

I have a security system that has more features available if I hook up a monitor, mouse and keyboard directly to the system. But I Have to go upstairs and have all this hooked up all the time. If ...
2
votes
1answer
17 views

Pi 2: External HDD Randomly goes into Read Only File System Mode

I've a raspberry pi 2bplus and I've installed the latest Raspbian strectch on it. I've connected External HardDrive to the pi. I'm running into a really weird problem that doesn't make sense to me ...
0
votes
1answer
61 views

Running a Python script as a service file on boot

I have a Python script (that works) set up and I want to run it automatically every time the Raspberry Pi is on. I have read that I need to create a unit file and I have done so, but whenever I try ...
0
votes
2answers
38 views

Only red light, broken?

Last week I've bought a Raspberry pi3 b+ for my project. Today I've accidentally connected the 5v pin and the other 5v pin or with the 3v and then it has just shutdown. This time it wont boot, only ...
1
vote
0answers
35 views

A working HDMI switch for Raspberry PI 3?

I have a Pi 3 and regular desktop computer with a single (DVI input) monitor. The desktop and Pi both have HDMI out for video. I use an HDMI > DVI cable to connect whichever device I want to use to ...
0
votes
0answers
18 views

Any browser for LibreElec/Kodi von RPi 1 B?

I was just wondering why there is no browser for Kodi Krypton on LibreElec on my Raspberry Pi (Model B Rev 2)? Many forums state that there is no Chromium or Firefox browser for ARM processors like ...
1
vote
1answer
41 views

AM2302 no signal using Raspberry Pi 3

I am trying to setup a AM2302 (DHT22) to use with Raspberry Pi, and unable to get a signal. What I need help is to be able to conclude whether the problem is due to (1) sensor fault (2) wiring fault (...
-1
votes
1answer
43 views

Powering a line following robot with a power bank. Any thoughts?

I am currently wondering for a college project, if it'd be possible or not to use a power bank to build a line following robot and power both the pi 3b+, the waveform motor driver hat with 2 dc motors(...
0
votes
0answers
11 views

Installing “Testing” version of a package on stable Stretch

I recently made a seedbox with Transmission 2.92, which is the latest stable package update on Raspbian, but the tracker I use only accepts Transmission 2.93 and up. I went to the package page for ...
0
votes
1answer
44 views

Creating A Website

ok so, I have everything correct I think for port forwarding but the issue is that my pi (Raspberry pi 2B running RetroPie add-on on top of the regular Debian OS) is not opening the port that I have ...
0
votes
3answers
28 views

Find usb device name to unmount/eject

I have a canon camera plugged into the usb of my Pi. I want to unmount or eject it but I dont know how to find the device name to supply to the unmount or eject command. lsblk gives the following ...
2
votes
0answers
49 views

Bluetooth Blues

I've discovered again that cursing and swearing at inanimate objects doesn't actually improve things, so I'll try posting a question. A couple of months ago I attempted a fairly ambitious project (...
1
vote
1answer
12 views

How to bridge the local network of an access point with a remote private network by openvpn?

My access point spawns a wireless local area network. Now I want to connect it to my other private network over the internet with openvpn so it gets direct part of the remote network in a common ...
1
vote
3answers
57 views

Powering 100mA LED

I want to power an 1.5V LED fully and control it using pi. I can only use 16mA per pin and i need 100mA. Can you give me suggestions? I can turn it on with 5V and 35 ohm resistor but not control it. ...
0
votes
0answers
22 views

Creating device driver which feeds GPS Co-ordinates from phone to raspberry pi

I don't have GPS module, so I was thinking whether I can feed GPS coordinates from my android/ios phone to raspberry pi over wireless protocol like bluetooth/TCPIP. Can I create a virtual device ...
1
vote
1answer
29 views

Is it possible to revive GPIO 18 pin? [duplicate]

I guess it (pin 18) got burned after me accidentally connecting it to the 12V of the led strip and not the data pin, while the RPI ground and 12V ground were connected too. I used pigpiod, gpiotest ...
0
votes
0answers
6 views

Updating Fedora 29 gives me this “error loading repository 'fedora' has failed”

I have Fedora 29 minimal running on a Pi 2. However whenever I run the command; sudo yum update I get the following error message; error loading repository 'fedora' has failed I am able to ping ...
0
votes
1answer
15 views

wps_supplicant@.service not present in Jessie

I've been following along with the WiFi repeater setup and I've hit a snag. I am running Jessie rather than Stretch. I don't have wps_supplicant@.service in /lib/systemd/system/, just wps_supplicant....
0
votes
2answers
32 views

VNC disabled after each reboot

I run VNC through raspi-config. Turns on. I run sudo vncserver. Works. I reboot. Everything is shut down/disabled and i have to redo it. How can i permanently enable vnc? (raspbian, over ssh) error i ...
0
votes
2answers
50 views

Camera with speed sensor on raspberry pi?

im useing raspberry pi 3 with ultrasonic sensor and normal usb camera . so i will connect the raspberry pi to AZURE IOT HUB so ive setted the ultrasonic sensor in a place so if any car pass that place ...
1
vote
0answers
45 views

Error unknown machine command despite compiling without errors

I recently made a project using opencv 4 on my raspberry pi 3 b+, but then decided to port the whole project to a new raspberry pi zero, as I want to make it a permanent setup and want to keep my py 3 ...
0
votes
2answers
40 views

Can a single Ethernet interface be addressed on DIFFERENT subnets?

Can a single REAL Ethernet interface be addressed on (2) DIFFERENT subnets? But how can this be when a Pi only has a single REAL interface- and therefore only a single MAC address to map the (2) ...
0
votes
1answer
35 views

SSH over hotspot network?

I have looked through here a bit and seem to have a unique situation I'm trying to address. I have an iphone with my hotspot enabled. I connect to the hotspot with a raspberry pi zero w over wifi. I ...
0
votes
0answers
26 views

Mobile Wi-Fi Solution

I have created a Raspberry Pi 3A+ prototype system consisting of a rover with camera and touch screen remote control that communicate across a Wi-Fi network. My expectation was to have the rover ...

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