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18 views

Pi4 WiFi connection interuptions (Ubuntu 19.10 image)

I use RPI4 and Ubuntu 19.10 64bit image. The WiFi (I use the built-in) stops from time to time with those errors: Feb 08 15:21:58 ubuntu kernel: kworker/u8:2: page allocation failure: order:0, mode:...
0
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0answers
12 views

Raspberry Pi 4 Camera video not working but image are

https://projects.raspberrypi.org/en/projects/getting-started-with-picamera/4 The error is persistent using the CLI raspivid -o Desktop/video.h264 and with python camera.start_preview() camera....
-3
votes
1answer
33 views

How do I set up an external drive as a network share using the Raspbian GUI?

Using the GUI, and only the GUI, how can I share a USB drive on the network? I'd prefer to use Samba since my clients will be Windows. Using Raspbian Buster (current version) or later. For ...
4
votes
1answer
400 views

Large Download Pi Server

I have a raspberry pi 4 (2gb) set up as a file server. I was wondering if it was possible to create a tool, where when I paste a link into some sort of prompt, my raspberry Pi would download the file ...
0
votes
1answer
18 views

How to pass parameters to program run from init.d?

I'm debugging lirc on a Pi 3b running Stretch with 4.19 kernel. In my previous question, I found a way to cause lircd to function, but it requires invoking the daemon with passed parameters. I ...
1
vote
1answer
30 views

Get cheap ST7789 TFT display working through SPI (without CS pin)

I purchased a cheap Chinese ST7789 TFT (1.3in, 240x240) that is clearly identified as SPI compatible, tough it does NOT have a CS pin and also some of the pins seem weirdly named to me. I have been ...
2
votes
2answers
108 views

LibreOffice Base in Raspbian Buster image will not find openJDK v 11's JRE

2-8-2020: While attempting to explore Libreoffice Base on the pi4B 4GB running: pi@raspberrypi:~ $ uname -a Linux raspberrypi 4.19.97-v7l+ #1294 SMP Thu Jan 30 13:21:14 GMT 2020 armv7l GNU/Linux I ...
0
votes
0answers
18 views

RPI-KYB keyboard model not in keyboard configuration list

I have a raspberry pi keyboard from the desktop starter kit (Model: RPI-KYB). I am running raspbian lite and cannot configure the keyboard correctly. The RPI-KYB model is not in the raspi-config list ...
1
vote
2answers
89 views

PIVPN Wireguard + TOR

I have installed PIVPN with the Wireguard protocol. So from my mobile phone, for example, my data are encrypted between my mobile phone and VPN but not between my VPN and the Internet. Is there a way ...
1
vote
1answer
75 views

Problem with iptables on buster - neither legacy or nft work

I recently installed buster on a Pi 3 Model B. Trying to setup a von (using pivpn) I realised that iptables is not working. I've learned that there's legacy mode and nft. Here's part of the output ...
1
vote
1answer
28 views

Copy OS Image onto SD Card Partition

I have a 128GB SD card that I've partitioned into 4x30GB primary partitions and a 200MB EFI boot partition. I would like to be able to have four OS on this card, but can't find software that allows ...
0
votes
1answer
43 views

Operating 2 Gpio pins at same time

I want to write a program that can operate 2 gpio pins with different ON-OFF times at same time. Say the time duration is 2 sec. In this time duration, I want to set GPIO 4 HIGH for 1 sec and LOW for ...
2
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0answers
23 views

Wire length between Raspberry and RC522

I want to know what is max length can be wired connection between Raspberry and RC522 module?
2
votes
1answer
115 views

PHP 7.4 on raspbian

I'm trying for about 4 hours to install PHP 7.4 on my Raspberry Pi Zero W. I tried different tutorials, but I endup crashing my raspbian completly or just the installed php. With crashing I mean, I ...
2
votes
1answer
39 views

Continuous data acquisition from ADC at around 10 MSPS

I would like to continuously stream data from an ADC with 12 to 16 bit to a Raspberry 4 at around 10 MSPS. Since the Raspberry is not realtime, I'm assuming I need some sort of FIFO buffer as ...
2
votes
1answer
32 views

How to specify the wifi network to connect and avoid any other (for raspberry pi 0w)

I am using raspeberry pi 0W (Debian) to connect to a specific WiFi network, the problem is that sometimes it connects to other networks (open wifi networks). I do not want to edit wpa_supplicant.conf ...
1
vote
0answers
32 views

Campus Network wi-fi issue

I have a raspberry pi which is connected to University network via wi-fi. I usually just ssh to it through my PC if i want to do anything. The internet is working as I can ping google and even fetch ...
0
votes
0answers
10 views

DS2482 kernel example / usage

Like the post on Oct 2013 by AnyNC I to would like to use the DS2482 module in a C program on my Pi but I'm unsure how and where to get further information on this. All the reply links to his post ...
1
vote
5answers
159 views

How do I SSH into my Pi at home from a remote location? [duplicate]

I can't seem to find a straight answer anywhere. So I'm just going to ask SO instead. For arguments sake, lets assume these are my details public IP ~ 11.111.11.11 Pi's private IP ~ 192.168.0....
0
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0answers
32 views

PIVPN with Wireguards - Hide IP

i have a question: i installed PIVPN with Wireguard protocol. From my mobile phone, my endpoint is the my ip public and with a specific port, I reach out my VPN. Perfect! My data are encrypted between ...
3
votes
2answers
66 views

Hosting LAMP on SD-card in RPi now - would like to move whole database and website to External USB 3.0 SSD

.I am hosting this website on the RPi 4 - 4GB Ram model. I'm guessing the google PageSpeed insights ranking score is kinda ok right now (it ranges in the middel with a score of 56) - try and test it ...
1
vote
0answers
32 views

Grove - IMU 9DOF v2.0 with Raspberry Pi for calculating position, compass values

I am using Grove - IMU 9DOF v2.0 with Raspberry Pi to calculate the linear displacement, compass values. I followed the code given in this GitHub URL. While running the read9Axis.py code (which is ...
3
votes
1answer
76 views

How to hibernate raspberry pi4? suspend-to-disk, aka power off state

I apologize for the lack of knowledge. I am attempting to Hibernate / leave all open applications open, unplug power take the PI somewhere else and reboot starting up right where I left off. This ...
1
vote
0answers
19 views

If I want to program I2S by bit-setting the PCM registers manually, do I need to disable any kernel settings (eg snd_bcm2835)?

(I'm not with my board at the moment - if I need to share my code, I'll have to edit this post or post a new one at a later time) I didn't realize how complicated I2S setup on the Pi is. I've been ...
4
votes
0answers
58 views

Host Web Server on Raspberry PI via Bluetooth PAN

I don't often post on forums like this, but when I do, there's always someone in the comments telling me I violated some practice of forum posting and I never get a legitimate answer, so I figured I'd ...
1
vote
1answer
26 views

Is it possible to recover the package/program “Screen Configuration” in Buster

I removed Python 2.7 and some packages attached to it by mistake, I've to reinstall the desktop and other utilities, but I couldn't figure out how with this one. Only way to change screen resolution ...
2
votes
2answers
35 views

No menus after reboot

Running Buster on a Pi4, updates, upgrades were just done. Everything was working just dandy then... I shut my Pi down in order to physically move it on my workspace. I reconnected everything exactly ...
2
votes
1answer
69 views

What is the relationship between angle and servo motor duty cycle? How do I implement this?

I am unsure of the relationship between duty cycle and angle. I see lots of tutorials online with many different equations to calculate duty cycle for a given angle. I have a 50Hz servo motor that ...
1
vote
0answers
22 views

Raspberry Pi4B+ Access able over LAN but has intermittent internet access

As above, I'm able to SSH and VNC into the box without any issues (lag, packet loss) on the local network, however it seems to have intermittant internet access. If at all. I thought this was a ...
1
vote
1answer
54 views

Setting up Raspberry Pi as an access point for IPv4 and IPv6

I setup my pi using this guide (NAT version): Setting up a Raspberry Pi as an access point - the easy way For IPv4 this worked like a charm. The problem is, that I cannot get IPv6 to work as well. My ...
1
vote
1answer
26 views

How to remove choppiness from streaming?

I tried GStreamer but it was not getting installed as its dependency repo link which we place in source.list was outdated. I tried mjpg-stream but it kept saying that I don't have a camera connected ...
1
vote
1answer
23 views

Can I use 12v and 8amp battery with L298 motor driver

Can I use 12v and 8amp battery with L298 motor driver with raspberry pi model?
2
votes
1answer
38 views

How to change wi-fi country in Raspberry Pi 4?

My Raspberry Pi information: > uname -a Linux raspberrypi 4.19.93-v7l+ #1290 SMP Fri Jan 10 16:45:11 GMT 2020 armv7l GNU/Linux > cat /etc/os-release ...
1
vote
0answers
29 views

Can i transfer files between two rapberry pi's using Aux cable?

As a part of project, i have to transfer any file from one pi to another pi through Aux cable.
1
vote
2answers
44 views

What's the best way to transfer data one-way from one Pi to another?

I would like to connect some sensors to one Pi and have it collect data from the sensors exclusively. This Pi will have only sensors and no display attached. Another Pi will act as a computer in ...
-2
votes
0answers
21 views

How to use my Arch Linux machine to access my Raspberry Pi, which is on the local network?

I have Raspbian installed on my Raspberry Pi Zero, which is connected to my internet modem by Ethernet cable. My Arch Linux desktop computer also is connected to my modem via Ethernet cable. How do ...
-4
votes
0answers
32 views

Pi not copy+pasting correctly

My raspberry pi is not copying and pasting correctly from thonny to python2. It thinks I want more than one prompt for when I copy 1 thing. Here: code: >>> client = pytumblr.TumblrRestClient( ... ...
3
votes
2answers
40 views

Ambient operating temperature

Will the raspberry pi be able to operate with an ambient temperature of between 50c to 80c? The model we are using is the raspberry pi 3 b+.
1
vote
1answer
42 views

Rpi 4b bluetooth does not show up

My bluetooth will not show up at the top right corner of the taskbar like it is supposed to. I have tried: -Adding multiple of them in the add/remove panel items, but none show up. -rm -r ~/.config/...
0
votes
1answer
28 views

How to share WiFi internet from pi zero w to computer

I am trying to setup my Pi Zero W as an internet bridge where it connects to existing WiFi hotspots (using its internal WiFi card) from behind a VPN (openvpn) and then shares the network to a Mac via ...
4
votes
2answers
61 views

Watchdog on the RPi4

Does the Raspberry Pi 4 have a hardware watchdog timer like the RPi3 does? If it does, which kernel module should I load in order to use it? I'm running Raspbian Buster, kernel 4.19.93-v7l+ Thanks.
3
votes
1answer
40 views

ds18b20 + USB serial adapter

I have this "QinHeng Electronics HL-340 USB-Serial adapter" and a couple of DS18B20 temperature/humidity sensor but I can't get to read data using digitemp. Also tried with this #include <stdio.h&...
1
vote
0answers
13 views

USB networking between Pi Zero and Pi 3 not RUNNING

I am struggling to get a Pi3 and a Pi Zero to network over USB. I have followed the advice at https://en.iakta.org/progetti/2raspiviausb/ and https://en.iakta.org/progetti/2raspiviausb/ (and elsewhere)...
1
vote
0answers
33 views

LIRC sending error transmission failed

I am trying to set up and send IR-Signals with my Pi using LIRC I was already able to receive signals and to configure them as a remote device. I followed this tutorial : https://gist.github.com/...
3
votes
1answer
69 views

Power Supply Raspberry pi 4

I have googled a lot but didn't find anything useful. Can I use any power adapter other than the official Raspberry Pi supply? Moreover, I have an Argon One Case and many people have recommended ...
3
votes
2answers
54 views

RPi 4 connected to wifi but no internet?

My problem is similar to this question but the answer provided there is not helping me. I am working on RPI4B and connected to WiFi with my Android device. If I modify the etc/network/interfaces ...
2
votes
1answer
49 views

Determining kernel release of kernel .img on disk

Does anyone know how to determine the kernel release of a Raspbian kernel on disk (e.g. 4.19.93-v7+ or something similar)? I know uname -r will tell me the release of the running kernel, but if ...
1
vote
0answers
46 views

USB cameras with Nanopi M4 using motion package

Sorry this is a question related to Nanopi M4 but I couldn't find anything pertaining to exactly that I am using 3 low light HD USB cameras (details on the link below) for my application. https://...
-3
votes
1answer
41 views

Is it possible to stop the Pi from powering the GPIO Ports 1,2 and 4?

As the title suggests, I would like to stop the Pi from providing power through the GPIO ports. Is this possible?
1
vote
1answer
56 views

DIY Ambilight project, Raspberry Pi receiving video input

So Got myself a Raspberry Pi 4 Model B 4GB RAM. I have also bought a S-100-5 PSU (20A) for lighting a WS2812 addressable light strip. My overall goal is to create a Responsive AmbiLight for my TV. ...

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