All Questions

0
votes
0answers
3 views

Libreelec startup with LAN excludes WLAN

When RPi (with Libreelec) is connected to the web with WLAN, plugging also the ethernet for LAN does not affect the WLAN functionality: it automatically connects to the web by LAN (which is faster) ...
0
votes
0answers
4 views

How to host godaddy domain in raspberry pi?

I am considering the raspberry as a hosting server. I had purchased a domain from godaddy website. I want to host it into raspberry and my website have to work. I have no idea to start configure the ...
1
vote
0answers
8 views

Automatic clean of unattended upgrades

Following the Debian wiki documentation and this answer I have successfully set up unattended upgrades. I have confirmed that upgrades are really run. However, I want to avoid eventually getting disk ...
0
votes
1answer
7 views

How to program active cooling connected to GPIO

I have Raspberry Pi 3b+ with the case, which has a small 5v fan, which is connected to GPIO. Look to picture below: Fan works all the time. But I don't want it. I want it to work only in case, when ...
0
votes
0answers
5 views

Can I use a Rasp Pi 3 B+ for Home automation and camera hub?

I'm currently investigating a setup to start in home automation and security. Since this question touch a lot of topic, don't hesitate to let me know where I can ask them as I'm not sure myself. My ...
0
votes
0answers
8 views

Serial communication with raspberry pi 3B and Xbee

I'm new to python programming, if I wanted to know if someone can help me with respect to reading a value that I am receiving serially. In if the topology of my network is based on two parts, in which ...
1
vote
1answer
14 views

How Can I Make Lights Flash On My Raspberry Pi When A SSH Connection is Active?

I recently got a Raspberry Pi B+, and I have been playing around with it a lot. I want to start a personal project where, when I link to my Pi through an SSH connection from my laptop, I can make a "...
0
votes
0answers
8 views

N64 games not loading

I have N64 loaded into my retorpie (actually someone did it for me). When I click on one of the games that I loaded, I get the standard message that pops up but then it goes right back to the menu. ...
0
votes
0answers
5 views

How can I add a menu item to exit raspbian and get back to the CLI

When I boot up, I go directly into RetroPie. I can exit RetroPie and get back to the CLI to start Raspbian (startx). I learned that I can exit Raspbian with pkill x so I can start RetroPie back up, ...
0
votes
1answer
20 views

Are my resistor leds safe

I have the following leds ... ... that I hope to be able to connect to my pi for power and disk activity indicators. I read some guide that claimed that around 330 ohm resistors were needed, but the ...
0
votes
0answers
16 views

Altitude will only work one time then spits 25000m? Camera also pausing every second

I'm working on a code for a High Altitude Weather Balloon and I wanted the camera to start recording after a certain Altitude. The first output of information is correct but then it spits out wrong ...
0
votes
1answer
9 views

SW-420 Sensor/Code doesn't work--help with vibration sensor

I'm working on a project that uses SW-420 sensors to detect vibrations. I was originally following this tutorial and my code is pasted below. I used a previous post to determine that I should be using ...
-1
votes
0answers
15 views

L298N not working anymore

This is an image of how I had it routed up, it was working just fine until I attempted to add a rocker switch. I used the 2 pin on/off rocker switch that came with my smart car kit (https://www.ebay....
0
votes
2answers
36 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 ...
1
vote
1answer
24 views

3B+ will not boot from USB

New Pi 3B+, Sandisk Cruzer 16GB as adviced here: https://www.raspberrypi.org/blog/pi-3-booting-part-i-usb-mass-storage-boot/ Formatted as one fat32 partition then Etcher:ed with the lite version, ...
0
votes
0answers
17 views

RPI zero W g_multi on Mac OS X

I've a strange issue when using g_multi on my Raspberry Pi Zero W. Now I can format the SD card with archlinux system and enable the g_multi (network, serial and mass storage) and work fine with my ...
0
votes
1answer
19 views

UV4L raspicam webstreaming in H264

I'm having some trouble getting H264 streaming to work. I've been digging around a little and it seems the problem is that UV4L is sending raw H264, which is not directly playable in Chrome. Does ...
2
votes
0answers
22 views

Google assistant on RaspberryPi3

I need help as I am stuck doing a project. I followed the tutorial on google developers website " https://developers.google.com/assistant/sdk/guides/library/python/extend/install-hardware" and got the ...
1
vote
1answer
15 views

Host MP3 stewing website on raspberry pi

I (as I am sure most people do) have loads of MP3s and CDs from pre Spotify days (other services are available). In particular I have quite a few that aren't on Spotify. So I have decided that I would ...
1
vote
1answer
26 views

Raspberry Pi Model B for a Wireless AP: nl80211 driver initialization failed

I'm trying to setup my Raspberry Pi Model B to act as a standalone Wireless AP using a Ralink MT7601U Wireless Adapter. However, starting hostapd presents me with this error. pi@raspberrypi:~ $ sudo ...
0
votes
0answers
18 views

dhcpcd times out

I've had a 3b+ running in headless mode for ages. I rebooted it last week, and it never came back online. It looks like dhcpcd is failing to start. I figured I might have misconfigured something, so I ...
-6
votes
0answers
21 views

Codesys, Strange file output with CONCAT

I'm using the CAA File library to write data to a txt file. I can write a regular string to a file like 'This is a test', and it works just fine. However if I use CONCAT to combine 2 strings and then ...
1
vote
1answer
45 views

Rasberry pi 4 channel relay switch off after 10 seconds

import RPi.GPIO as GPIO import time def mist(): GPIO.setmode(GPIO.BCM) # setup and switing on relay GPIO.setup(4, GPIO.OUT, initial=GPIO.LOW) # sleep for 30 second ...
0
votes
0answers
9 views

SPH0645LM4H Adafruit I2S MEMS Microphone Kernel Error

I'm trying to configure the i2s kernel following this website: https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/raspberry-pi-wiring-and-test but when I run the following code rpi-...
0
votes
0answers
15 views

Raspberry pi ntp client fails to sync on network master clock

I have a pi3B+ with stretch. I am trying to sync its clock using a network master clock (a pc set as ntp server) through direct ethernet connection. I can't see my server synching the pi. I followed ...
-1
votes
2answers
47 views

How to receive an measurement via RaspberryPi GPIO

Existing codebase being written in python, now requires attaching a new device. Purpose of that device will be to measure analog angle, convert to some format of a number and send it to rpi via some ...
0
votes
3answers
37 views

Full backup of server [duplicate]

I am building a web server od Raspberry Pi 3. The system and the data will be on microSD card and I am curious if there's any way to automaticaly backup the whole card with data? I mean - if anything ...
0
votes
0answers
18 views

Install CentOS 7.6.1810' on Raspberry Pi Zero HW

Have a Raspberry Pi Zero HW v1.1 and want to install CentOS 7.6.1810. When download the file CentOS-Userland-7-armv7hl-RaspberryPI-Minimal-1810-sda.raw.xz and after unzipping I use Etcher to flash the ...
0
votes
0answers
14 views

How to change the clock to 12-hour format in fullpage os jessie-lite

Can someone help: I am trying to set the time from the cmd line on fullpageos running jessie lite and cannot find the .config file to change the %R to %r. I am a bit of a newbe so any help would be ...
0
votes
0answers
9 views

PIServer client autologin

I've got a Raspberry PI 3B+ configured to diskless boot with the PIServer PXE system. I have created a user 'map7' and would like it to autologin to the thin client using that user. I've edited /etc/...
0
votes
0answers
30 views

How to execute Python code in Raspberry Pi from an Android phone?

My Android phone is connected to the Raspberry Pi via Wi-Fi. Is there a way to execute a Python code (with arguments) from smartphone to Pi?
0
votes
0answers
14 views

Pi Zero splash screen

I created a custom splash screen on a Pi 3 B+, when I transfer the card over to my Pi zero, the splash screen does not display, only 3 small squares about 2/3 of the way down the screen. What am I ...
0
votes
0answers
16 views

how can I use an external GPIO sound card and set it as default?

I've bought a seeed voice card as an external GPIO sound card and as a input audio device to use pocket sphinx.After it was installed successfully, i typed "cat /proc/asound/cards" to see my card ...
0
votes
0answers
17 views

Checking Voltage Level at GPIO Pin Program

I’m trying to write a program that will loop through 3 GPIO pins connected to an external charging pad and see if a device has been placed on the pad (high voltage). If high signal is detected the ...
0
votes
1answer
41 views

Raspberry Pi not booting, even when I install NOOBS on a formatted usb

I have this problem for a while now, the rpi doesn't boot. The red led is on but the green led never opens. I have formatted the SD card and re-install NOOBS on it but again I can't boot it. Before ...
0
votes
0answers
24 views

Curl: No route to host via ipv4 but works with ipv6

I can curl with ipv6 succesfully but not with ipv4. > curl -4 icanhazip.com curl: (7) Failed to connect to icanhazip.com port 80: No route to host But with ipv6 it's successful > curl ...
1
vote
2answers
18 views

/dev/fb0 is the wrong resolution

I noticed that when I plug my raspberry PI 3B+ into my monitor fbset reports this: mode "1824x984" geometry 1824 984 1824 984 32 timings 0 0 0 0 0 0 0 rgba 8/16,8/8,8/0,8/24 endmode This ...
0
votes
0answers
12 views

MPC stream MP3, but doesn't stream PLS

I use Pi to listen to internet radio. If the url is of the type url/file.mp3, then everything is fine; if the url is of the type url/file.pls?id=1 (SHOUTcast), then the tracks do not start, what could ...
0
votes
0answers
14 views

GUI Login Fails for all accounts

I'm relatively new to both raspberry pi and unix. In spite of that, I'm teaching intro to programming classes at a school using raspberry pi's. These pi's are NOT connected to the internet. Each ...
1
vote
1answer
41 views

Would ZRAM be helpful for running OpenCV?

I'm doing some OpenCV development on a Raspberry Pi 3, and I have found some information about using ZRAM on the Pi to try and boost its processing effectiveness. I know this isn't actually adding ...
1
vote
3answers
55 views

Self-balancing robot using Raspberry 3b+

I have built a self balancing robot using raspberry pi 3b+. I am not able to reduce the response time. Hence, the robot doesn't balance properly. I am using MPU 6050, 150rpm 12V DC motor. I checked ...
1
vote
3answers
50 views

How to recover 'deleted' microSD card space? [duplicate]

I've been playing around with my RPi3B lately and for whatever reason wanted to reformat my SD card. I'm unsure how I did it but now when I insert the card it says there is only 31mb of space. The ...
0
votes
0answers
31 views

Meaning of output from 'ps -aef | grep python3'

When I enter this command, ps -aef | grep python3 I get the following message pi 828 1 0 12:06 ? 00:00:08 /usr/bin/python3 /home/pi/hs110-data-collect.py pi 5079 863 1 ...
1
vote
1answer
31 views

P5 code optimisation for raspberry Pi

When I try to execute this sketch that is based on a face recognition algorithm it really lags on raspberry, whereas when run on different devices (macbook pro and notebook), it runs smoothly. You can ...
1
vote
1answer
39 views

Copy program to SD card before boot

I'd like to "install" a programm on the Pis SD card before I instert it into the Pi and ideally configure it to run after boot. When I insert the SD card into my PC, all I can see is the boot folder,...
0
votes
0answers
9 views

Local autostart file is missing, general autostart file throws error, direct execution of file goes well

I try to make a script startup via an autostart file. But I run into two problems which I do not understand. Why am I missing the ~/.config/lxsession directory. It is just a fresh raspbian ...
0
votes
0answers
35 views

DS18B20 temperature sensor not found in devices folder

I am trying to setup DS18B20 for Raspberry Pi. I have followed the instructions from Adafruit Lesson 11 updated RBPI kernal to 4.19 setup wiring (see below) with 10k resistor verified signal (yellow ...
0
votes
0answers
26 views

Porting tizen 3.0 on a raspberry pi 3

it's my first time to run another os on my RPI3 other than rasbian so I'm trying to set-up tizen 3.0 on my RPI3, I have found this link that describes all the steps to port tizen on a raspberry pi3 ...
-5
votes
0answers
28 views

USB camera and ultrasonic sensor [on hold]

i have small project using Usb camera and ultrasonic sensor in raspberry so if my sensor read a value it will ask the camera to take picture . and than send it to database through iot hub . i need ...
1
vote
0answers
18 views

Running Opengl application on pi 2b, frame issues. Pi issues, or optimization problems?

Here is my application that I have managed to get running on my pi. import pygame import random from pygame.locals import * from OpenGL.GL import * from OpenGL.GLU import * vertices = ( ( 1, -1,...

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