Questions tagged [pi-4]
For questions that apply specifically to the Raspberry Pi 4 and not other/all models.
2,112
questions
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How to remotely connect to a Raspberry Pi that is connected to the internet via a mobile hotspot? [closed]
Raspberry Pi will be connected to the internet via a mobile hotspot (different mobile hotspots at different times). I am looking to connect to this Raspberry Pi remotely, be able to SSH into it. Would ...
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-2
votes
1
answer
166
views
Why does Raspberry Pi 400 use white color (and not black) for its USB 2.0 port?
On a quick look up, it seems the general trend is white for USB 1.0 and black for USB 2.0. I also glanced through the USB 2.0 specification to try find anything relevant but it seems a bit ...
- 115
2
votes
2
answers
130
views
Make screenshot of a program without being connected to a monitor
I am working on a project at a company where I read the temperature of a machine with a raspberry pi. I have downloaded the necessary program and can use it through Wine.
In addition, I have made a ...
- 21
1
vote
0
answers
62
views
How to turn PI4 into a IOT device , discoverable and configurable via mobile app (Wifi P2P or BLE) [closed]
I've created a simple camera system on the PI 4 which I want to be discoverable with a custom android app.
The should find the PI device, then automatically connect, then mobile app will share the ...
- 11
1
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0
answers
725
views
PiOS lite bullseye on my pi 4 keeps saying “Firmware rejected country setting”
Whenever I run piOS bullseye on my pi4, it keeps saying “firmware rejected country setting” in sudo dmesg:
I tried using a completely fresh installation of piOS bullseye without any pre configuration ...
- 21
2
votes
0
answers
88
views
Unable to connect to pi 4 Ad-Hoc network
I've been trying to create an ad hoc server using a Raspberry Pi 4 running Raspbian GNU Linux 11 (Buster) following this forum post. I've modified it slightly to make it simpler, rather than any ...
- 21
1
vote
0
answers
592
views
How do i know whether an update to Chromium browser is available from the command line?
My RP4 is currently running Chromium 88.0.4324.187 on Raspbian 10. How do I find out whether an update to Chromium is available (and what version it is) without actually installing the update?
- 157
1
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0
answers
200
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Cubic Ubuntu virtual environment not working
When I try using Cubic Ubuntu to make a custom image of Ubuntu, I put in the ISO file, rename some things here and there, and click next. After it copies some stuff and does its thing, it tries to ...
1
vote
2
answers
1k
views
is widevine supported for 64 bit pi-os
I'm using the official 64bit version of pi-os but widevine
in the form of
sudo apt install libwidevinecdm0
doesn't make it available in chromium is it available? for 64bit
- 61
1
vote
1
answer
108
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Raspberry Pi 4: Maximum current for the 5 V/ground GPIO pins
As there are two 5 V GPIO pins (2 and 4), I wonder what the maximum current draw is for each pin. Can I safely power the RPI 4 only using one pin (GPIO 2 + 6)?
- 71
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105
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Raspberry Pi 4: Black screen after boot both local and via vnc
I have a Raspberry Pi 4 that I have had running for at least half a year as a Plex server.
I used Raspberry Pi Imager to create the os, and then I connected via vnc from either my mac or my pc, the ...
- 11
1
vote
1
answer
387
views
RPI4: sleep 10 waits 43 seconds when CPU underclocked
I use an under-clocked Rasberry Pi 4 to save power using these settings in /boot/config.txt:
arm_freq=700
arm_freq_min=100
core_freq=250
core_freq_min=75
sdram_freq=400
over_voltage=0
# source
# https:...
- 119
0
votes
2
answers
49
views
.net or other extension in Raspberry Pi hostname
Abandoned post by Unregistered user.
i saw on Jeff Geerling's site his Raspberry Pi had a hostname ending with .net, i want to have this too, since it would be prettier to access my Raspberry Pi via '...
1
vote
2
answers
218
views
How do I fix the usb-c port cracking on my pi 4?
Today I inspected my raspberry pi (4B, 4 GB ram) to see if any cables were disconnected, as my new Viewsonic monitor kept restarting for some reason, and I saw this:
It looks as if the USB-C port in ...
- 111
4
votes
3
answers
2k
views
RPi 4 4gb slow VNC
I have an RPi 4 4GB and I'm running RPi 64bit OS from a NVME HD connected via USB.
When remoted in via VNC, everything is very slow. It takes about 10s to open the browser.
I remote in using the local ...
- 141
2
votes
2
answers
169
views
Is there a way I can use the HC-SR04 (ultrasonic sonar) along with the LCD display?
I have a Raspberry Pi4 Model B, with a 3.5" LCD display attached:
Since the display occupies the first 26 pins, and therefore also the power supply ones, is there a way I could use the HC-SR04 ...
- 123
3
votes
1
answer
750
views
Can't boot Raspberry Pi 4 (4GB RAM) from USB
I am trying to boot my Raspberry Pi 4 from SSD attached to USB3.0 port via USB-SATA cable. The disk works fine under Linux (I am running Ubuntu 22 LTS) when Pi is booted from SD, but I can't boot from ...
- 31
3
votes
2
answers
1k
views
Why does `apt install linux-headers-generic` install old headers for the newest stable kernel?
I can boot a vanilla pi-4 with kernel8.img (Feb 15, 2023) to release 5.15.84-v8+ ... the pi-4 runs admirably.
# ls -ltr /boot/*.img
-rwxr-xr-x 1 root root 8194604 Feb 15 18:02 /boot/kernel8.img
# ...
- 143
2
votes
0
answers
58
views
Simultaneous video streaming to raspberry pi and GCS
I am working on a project in which I use a raspberry pi 4 on my drone to process the camera images and send some commands to pixhawk autopilot based on the information coming from image processing.
I ...
- 121
1
vote
0
answers
191
views
How to interact between ev3 and Raspberry Pi?
I recently bought a Raspberry Pi 4B, and I think it will be nice to connect it to my old LEGO EV3 hub so I can used the EV3's mentors and sensors. I plan is to make Raspberry Pi send messages to the ...
- 11
2
votes
1
answer
116
views
Multiple Sensors connected using I2C with different addresses software approach
I'm using a Rapberry Pi 4 Model B with 4 same I2C sensors. I want to get real-time data from them, but my knowledge of I2C is limited. I know that I can connect them, using different buses, but same ...
1
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0
answers
69
views
My raspberry pi is not working after I connected an android display to the one inside raspberry pi
So what happened was I connected an android display to my display thing inside the raspberry pi(not the hdmi). but then after that my raspberry pi did not work the pins all worked. But the hdmi did ...
-1
votes
1
answer
102
views
Pi 4 booting but no green LED blinking
Raspberry pi 4 4GB booting and everything works fine. But no green light blinking. What is the possible reason?
- 1,828
0
votes
3
answers
690
views
Is it possible to install Mac OS on a Pi 4B 8GB?
I am wondering if I can install Some version of Mac OS on my Pi 4B with 8GB ram and 128GB SSD card. I heard a rumour that it is possible but thought I would ask this community for advice.
I did manage ...
- 119
2
votes
3
answers
559
views
Powering Pi 4B with dead PMIC
One of my many Raspberry Pi 4's in one of my clusters recently broke down. After some troubleshooting, I was surprised to find out, that the power circuit on the board was actually toast.
I have no ...
- 123
0
votes
2
answers
354
views
Can Raspberry Pi 4 benefit from 3.5A power supply?
Experiencing external SSD data corruption issues which I believe are related to power issues.
Evaluating if it’s worth upgrading power supply from official Raspberry Pi 3A USB-C power supply to Argon ...
- 447
-1
votes
2
answers
70
views
Turn ON without a screen or delay after power ON
I have RaspberryPI 4 and a few 3 that are hooked up to TV.
If power goes out, I have to grab a ladder and turn ON TV first and then hook up raspberryPi for it to start booting.
Is there a way to turn ...
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1
vote
0
answers
429
views
Unable to sudo apt-get update and I want to install 32bit libraries
So I've been trying to install 32 bit libraries to my 64 bit pi.
sudo dpkg --add-architecture armhf
sudo apt-get update
sudo apt-get install libc6:armhf libstdc++6:armhf
and the result is
gz-01@...
- 11
2
votes
1
answer
115
views
Internet Slow when No HDMI
I am not sure this issue to be post or not here. But I feel something strange in raspberry.
Let me explain.
My Raspberry Pi 4 Board is connected with Ethernet cable and I have installed remote ...
0
votes
1
answer
106
views
Why can I mount an NTFS HDD, but mounting an NTFS SSD fails?
I have a Pi 4 and want to mount my Samsung 860 EVO SSD. I am unable to accomplish this, but attaching a HDD (same adapter and usb port) work just fine.
Both the SSD and HDD were formatted in NTFS (...
- 9
1
vote
1
answer
827
views
Retropie with Raspberry Pi 4 can't install dolphin
I have installed Retropie using the Pi Imager and when I try to install Dolphin in the experimental packages it gives me the error that it only works on a 64 bit OS, but according to this website, ...
- 19
-3
votes
2
answers
64
views
will painting the case and applying stickers effect the cpu temperature?
I want to paint or add stickers to my raspi case so it'll be more colorful. Is it ok to do that? Does it affect the CPU heating up? What other things do I need to consider?
- 113
0
votes
0
answers
118
views
python script for 4x4 keypad, some buttons not working
I'm trying to use a python script to make a connection with my 4x4 keypad on Raspberry (RPi.GPIO). The code does not work correctly, because the first and second rows do not respond. I'm trying to use ...
1
vote
0
answers
108
views
Problems addressing WS2812B LED Strip with Raspberry Pi 3 A+
Hello!
I am currently having issues addressing my WS2812B LED-strip correctly with my RPi 3 A+. I have followed the following video guide:
https://forum.core-electronics.com.au/t/problems-addresing-...
1
vote
0
answers
776
views
How to get camera module v2.1 to work on Ubuntu 22.04.1 LTS?
Not sure what I am doing wrong… camera module v2.1 is connected via ribbon cable.
$ cat /boot/firmware/config.txt
gpu_mem=128
start_x=1
$ vcgencmd get_camera
supported=1 detected=0
- 447
0
votes
1
answer
308
views
how to prevent rpi4 s to overwrite the cmdline.txt
I added to the cmdline.txt instructions
usb-storage.quirks=152d:0578:u force_mac_address=dc:a6:32:e6:58:51
to correct issues with a sata-usb interface and to change the mac address.
The quirks are ...
- 119
0
votes
1
answer
121
views
Can't access terminal after Raspberry Pi 4 boots (custom image)
I am trying to build my own custom Raspberry Pi 4 image.
I have successfully built the kernel and busybox.
I have setup my SD Card into 2 partitions:
-boot
-rootfs
I used a USB to TTL cable to view ...
- 21
0
votes
0
answers
71
views
Prime Video not streaming
I have installed Rasberry OS and ran the script to get streaming installed. Netflix and Disney+ is working fine but Prime Video is opening but does not want to stream the video.
The following message ...
1
vote
1
answer
838
views
Raspi camera module V3 with Octopi
Recently purchased raspberry pi camera module 3 NOIR. My plan was to use it for octopi (octoprint), however, i tried my best but couldn’t make it work, and followed many of pages on net but no result (...
- 11
0
votes
2
answers
664
views
Raspberry Pi Display issues on TV
I'm wondering if anyone else has run into issues like this and if they found the cause of it.
So I have a 'process' - any new machines get set up on my workbench (which has an old 22" 1920x1080) ...
- 133
3
votes
2
answers
181
views
Why are nodejs and npm versions way behind?
New to using a nodejs environment on a Pi.
I'm using a RPi 4B with Debian GNU/Linux 11 (bullseye) with nodejs v12.22.12 and npm v7.5.2. Latest nodejs is supposed to be v19, npm v9. I tried updating ...
- 153
0
votes
0
answers
155
views
No activity LED after shorting GPIO pins 3 and 5 on Raspberry Pi 4
I accidentally connected the fan to GPIO pins 2 and 3 or 3 and 4 (I am not sure which pair I connected but not both pairs are tougher) and now my Pi won't boot up. It is showing a solid red light. But ...
- 101
1
vote
1
answer
919
views
Audio via PWM pins?
Okay, kinda a noob here. I've been looking around, trying to find an answer to playing audio via the PWM pins. I tried rerouting the audio to no avail. I've tried making a script that uses PWM to play ...
- 13
10
votes
2
answers
3k
views
Boot from USB with a Raspberry Pi 4B that apparently has a broken SD card reader
I have spent the last couple of days testing my Raspberry Pi 4B to be able to boot from the SD card.
Apparently, I think that the SD card reader stopped working, and I can not have any OS inside my ...
- 203
1
vote
1
answer
73
views
Net install fails, could sd card be the issue?
I recently got my first RPi (4 model B 2GB) and a brand new SD card (Goconecto 1TB micro SD XC 3 A2). I'm trying to install Ubuntu Server via the net installer. Up to now I've tried 20.04 64bit, 22.04 ...
- 13
1
vote
0
answers
33
views
I2C 1 light at a time`
i am currently using the NCP5623 (I2C LED Driver) to light up my 5V 1A (as written on the box) RGB LED strip.
i followed the sample connection as shown on the datasheet of the NCP5623 and when i ran ...
- 11
0
votes
1
answer
534
views
php.in E212: Can’t Open File for Writing error
On my Raspberry Pi 4 in Terminal I edited /etc/php/7.3/apache2/php.ini to resolve some other issues I am having, and when I use :wq! to save and exit I receive the following error:
"/etc/php/7.3/...
- 25
2
votes
1
answer
882
views
Installing missing php extensions - NEMS/ Cacti
I'm installing Cacti Server v1.2.23 on my NEMS 1.5.2 for Raspberry Pi (Raspberry Pi 4)
I'm just learning about Raspberry Pi's and NEMS and I'm just in the process of installing Cacti.
On the Cacti Pre-...
- 25
3
votes
0
answers
173
views
Raspberry Pi 4B won't boot, is it dead?
I'm new to the Raspberry Pi world. I was in a charity shop today and I've seen a deal I couldn't resist so grabbed the Pi for 10 euro knowing full well that it could be faulty. Anyway once I got back ...
- 31
1
vote
0
answers
58
views
What is wrong/what did I do wrong on boot? Raspberry Pi 4 [closed]
I just got my Pi on Christmas and I mostly use it for Discord bot hosting and now I am interested into turning it into a NAS.
I followed Network Chucks video after I installed the Open Media Vault my ...
