Questions tagged [pi-4]
For questions that apply specifically to the Raspberry Pi 4 and not other/all models.
1,986
questions
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Space gap on top of Raspberry Pi
how can I let the Chromium to fill the gap on top of the screen?
I have set the autostart like this already:
@lxpanel --profile LXDE-pi
@pcmanfm --desktop --profile LXDE-pi
@xset s off
@xset -dpms
@...
- 1
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0
answers
22
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Why My Spi Connection Is Not Getting started?
Hello Guys I Am New To Embedded & Rasberry PI. So In Order To Understand SPI Connection I Made An PI-PI SPI Setup PS. I am Using Two Rasbrry Pi Model 4 B with Raspi OS & i did the followings ...
-2
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0
answers
13
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MOD 3 camera on a PI4 board
after trying to take a photo with rapstill -0 camera/img.jpg
i recieved
mmal:mmal_vc_component_enable :failed to enable component:ENOSPC
mmal:camera component couldnt be enabled
mmal:main:failed to ...
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0
answers
11
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unable to boot to network mode in pi4 B board when SDcard is removed
I am trying to Boot pi4 Board in Network boot without Sdcard for that i have done below steps
1 > sudo rpi-eeprom-config --edit and set as below
BOOT_ORDER=0xf21 - **Try SD first**, followed by **...
- 13
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1
answer
46
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Can't Install netperf on Bullseye
I am trying to install netperf on a RPi 4 with Raspbian 11 Bullseye I followed the directions from a previous post, netperf command doesn't exist on raspbian, but receive an error after make
I ...
- 3
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0
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19
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How to diagnose and fix extremely laggy VNC experience
I am using a Raspberry Pi 4 with an external SSD to boot from. I am finding that when I connect to it remotely and try to browse the web with VNC it is just hopelessly laggy. Like seconds of delays ...
- 101
0
votes
1
answer
47
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Raspberry Pi4 + Neo 6 GPS : Problem with getting data
I am using Raspberry Pi 4 (OS:bullseye, version 11) and Neo 6 GPS. I have tried to follow the tutorial https://www.instructables.com/Interfacing-GPS-Module-With-Raspberry-Pi/ but I am stuck at step 8.
...
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1
answer
24
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Qt error running a simple Python program to check connection between RPi 4B and camera module 3. (see the description)
I wish to deploy this RPi along with the attached camera module to a factory floor and then analyze the video stream. Hence, I have a headless RPi which I plan to use for this purpose.
Code:
import ...
- 111
0
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0
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23
views
Gpredict and Hamlib's rotctld problem. AZ & EL reads error message in Rotator controll section
I'm trying to build an automatic tracking system to track CubeSats with my Raspberry Pi 4B using GitHub Python code to emulate the Yaesu GS-232B and Gpredict via TCP 4533 to control a future Yaesu ...
- 1
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0
answers
30
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How to connect to Wi-Fi while using a Wi-Fi dongle
I have a raspberry pi 4b. It is attached to a hexapod robot, and the wlan0 port is used to host a network that I can control it through. I recently ordered a usb Wi-Fi dongle so I could aslo connect ...
0
votes
1
answer
33
views
Raspberry Pi won't boot after update Ubuntu Mate
Updated Ubuntu Mate on RPi 4 8GB. It rebooted and ran.
Subsequent boots fail with messages:
Initramfs unpacking failed: Invalid magic at start of compressed archive
spi=bcm 2835 fc204000.spi could not ...
- 11
0
votes
2
answers
36
views
Does it matter whether I use internal or external or sata or nvme drive in terms of power consumption for RP4?
I want to use an ssd to use raspberry pi with home assistant and I’ve found some information that an external ssd may require too much power and be unstable with the RP4. Is this true? Is one type ...
-2
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answers
42
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Dot Net 7 Installation on Raspberry Pi 64 Bit is invalid
I have a Raspberry Pi 4b 8GB.
I'm trying to install dotnet 7 64-bit, but it doesn't work.
The steps I used are linked below:
Dotnet 7 Installation on Raspberry Pi
After running the download and ...
- 97
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0
answers
28
views
Raspberry Pi 4 not outputting to 4K
My new Raspberry Pi 4B doesn’t seem to support 4K resolution out of the box.
I have tried two different 4K native screens and two micro-HDMI to HDMI cables, and neither works. However, if I connect a ...
- 1
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31
views
Case for multiple different versions of pi
Firstly, I'm not building a cluster, but due to lack of space, I just want to put my Pis into one case where they can share power and ethernet (POE)
I currently have a Pi 3B and 4B with plans on ...
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2
answers
47
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How can i backup/clone one Pi to another, Real Time
Background: Pi-4 running Buster configured with Postfix and dovecot serving several domains. It is working fine.
I would like to set up a second Pi as a backup. I already have a process to backup ...
- 1
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0
answers
37
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Raspberry Pi 4 - hwclock DS3231 RTC delay at boot
Running a Raspberry Pi 4 with a DS3231 RTC setup.
Everything is setup correctly and working fine and the hwclock is synced correctly.
The unit is running without any internet connection.
The problem ...
- 1
0
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0
answers
71
views
How to determine RAM size of Model 4B without power?
I wanted to buy an RPi4 on a flee market. Prices between the 1 GB, 2 GB, 4 GB and 8 GB differ a lot, so I wanted to make sure not to get scammed. The RAM size is not printed on the silk screen of the ...
- 2,335
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13
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Raspberry Yocto image boot stops at crnod : OK
I've built a Yocto linux image for Raspberry4. the boot starts normally, but after reaching crond : Ok, nothing happens. it stuck there
I used bitbake core-image-full-cmdline to build the image
- 1,195
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1
answer
54
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Fastest Way to Flash OS Image to Raspberry pi SD card
I want to Flash OS Image in a Much Faster way , In network Boot Mode, Currently i am using DD Command to Flash OS to 32 GB SDCARD on Client raspberry pi 4 board, its taking 10mins for 6.5GB image size,...
- 13
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24
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TFT HSD - 9190J-D1 connection to Raspberry Pi model B
I have Raspberry Pi 4 Model B
I want to connect SPI TFT 4" LCD HSD-9190J-D1 using GPIO pins.
Kindly help me up with proper connections and necessary drivers required for the LCD to work as ...
0
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0
answers
22
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pymodbus issue in in raspberry pi 4B
Please note that i am initialising my coding as below
import pymodbus
import serial
from pymodbus.pdu import ModbusRequest
from pymodbus.client.sync import ModbusSerialClient as ModbusClient
#...
- 1
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0
answers
22
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Multiple first time start issues, including "Unable to mount root fs on unknown-block(179,2)"
So from what I have been googling, it sounds like it could be the SD card, but it is brand new and no other applications detect an error with it. Hopefully someone here can help me confirm.
I bought a ...
- 101
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0
answers
15
views
Building RAID fails
I try to set up a RAID1 on a RPi4 with mdadm.
I struggled at various corners along the way. Since it still doesn't work, I'm not sure what's fixed and what's still causing problems.
Equipment
...
0
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0
answers
16
views
How Can I Expand The GPIO / Pin Quantity When A PiSound is Installed on the RPI4?
I'm working on creating a musical synthesizer and the sound engine requires a Raspberry Pi 4 + PiSound. From what I can gather, the PiSound is placed right on top of the RPI4 and uses its GPIO pins.
...
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0
answers
37
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Rapsberry Pi Camera v3 issues
I want to make a Rpi4 8GB livestream 2 camera feeds over 4G (SIM7600X module). One camera is a generic action cam and the other one is a PiCamera v3, which I have issues with. I'm running Raspbian ...
0
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1
answer
37
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How to Access corrupted Raspberry Pi SD card using Ethernet Connection
I have Raspberry PI with Corrupted SD card, showing Kernel Panic Message, is there any way i can access it without removing SD card from SD card SLOT, raspberry pi is connected with Ethernet, which is ...
- 13
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0
answers
37
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camera not detected even though it works once in a while
I am a 3D enthusiast and I use my Raspberry Pi 4 for 3D printing with my Creality CR-10S Pro V2. I had successfully installed Klipper on my Raspberry Pi 4 and everything was functioning properly. My ...
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0
answers
43
views
No output from /dev/serial0 (RPI 4) [duplicate]
I am also doing similar project with raspberry pi 4 (bullseye version) and neo 6m module. I have followed all the steps given in https://sparklers-the-makers.github.io/blog/robotics/use-neo-6m-module-...
- 1
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3
answers
45
views
RaspberryPi 4 64 bit: root is neither allowed to ssh out to another box nor rsync
When I load a new machine (PI), I allow root login, then login and rsync to root@xxxx:/*.sh . to bring in my auto update and daily status scripts. Just loaded this RaspberryPi 4 with 64 bit and it ...
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0
answers
24
views
RPi 4B fails to output to monitor after boot
I'm trying to configure an RPi 4B as part of my homelab alongside other, older RPis. My usual steps would involve:
Installing an OS (usually either Debian or Ubuntu server) using the Raspberry Pi ...
- 111
0
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0
answers
11
views
G150XG01 LCD not working
I have an AU Optronics G150XG01 LCD screen and a controller card to go with it. I am connecting it to a Raspberry Pi with an HDMI cable. I started it up and it looked very distorted. I read online ...
-1
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1
answer
37
views
Does Pi draw more power when GND is connected to pin 16?
Strange question perhaps, but I was wondering if anyone knows if a Pi would in theory consume more energy when the GND pin is connected to pin #16? I have an interactive piece of software running on ...
- 101
0
votes
1
answer
40
views
My Raspberry Pi 4b changes password by itself
I am using Raspbian Bullseye on my Raspberry Pi 4b, and in the last few days it has been changing the password by itself.
I have a headless setup, so I can only connect via SSH, and sometimes, several ...
- 1
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0
answers
37
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The following code is for a random number guessing game using Arm assembly on Raspberry pi 4 .Can anyone help with it?
.data
//* The welcome message. */
welcome_message: .asciz "Welcome to the guessing game! This has been created by Ahmed Imran naeem (6779560)"
/* The prompt for the user to ...
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1
vote
2
answers
849
views
Unable to ssh into headless raspberry pi?
I am trying to set up a headless raspberry pi 4 so that I can ssh into it via my computer. To set it up, I did the following:
Erased the microSD via disk utility
BalenaEtched raspberry pi OS from ...
- 113
0
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0
answers
14
views
Building a LoRa Gateway to capture all spreading factors and all bandwidths on Raspberry PI
As the title suggests, I have a substantial task at hand, so I'm unsure if I'll be able to cover everything in this message. However, I'll attempt to provide links to related questions if needed. I ...
- 101
0
votes
1
answer
45
views
Using 5V and ground for fan with PoE+ HAT
I have a 10" rack with 5 rpi 4B devices. All rpis have a PoE+ HAT. The rack supports the addition of 2 fans, which each require a 5V and ground connection.
I noticed that the GPIO pins don't ...
- 101
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1
answer
21
views
putty ssh 2MFA isn't prompting 6 digit code but other options do
I was following along with 2 guides for my new Raspberry pi 4b. To get ssh setup and MFA. I've included the link for the MFA as this appears to be where I'm having an issue.
My issue is that when I ...
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1
vote
1
answer
51
views
Raspbian: Visually Open Terminal Window and execute command after boot and login to desktop environment
Please god can someone help me. I've just spent the last 8 hours trying absolutely everything I can find online in every different way I can possibly think of and none of it works.
Chron jobs cant ...
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1
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0
answers
34
views
Where is the boot sequence documented in detail?
I'm following this tutorial on writing "bare metal" code for the Raspberry Pi 4. I've gotten the code working fine, but I'm left wondering how I could have figured any of this stuff out for ...
- 111
-2
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2
answers
55
views
How to physically remove WiFi from 4B?
I am closely following Scott Young's training on working with deep focus.
I have a new 8GB Raspberry Pi 4B along with an Samsung 870 SSD and NVMe to USB 3 converter - I am working just right.
But as ...
- 1
0
votes
1
answer
43
views
How to Convert 32GB Cloned SD card Image to small size ISO file
I have have 32GB SD card Cloned Image of Raspberry PI, I want to make it small size as Flashing back to another SD card takes more time using DD command, I need a small size image so that i can place ...
- 13
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0
answers
36
views
PI camera is not working
Dear Raspberry Pi Community,
I am reaching out to seek insights into an issue I've encountered with the Raspberry Pi camera across three Raspberry Pi 4 (4GB) units, one of which was just recently ...
1
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0
answers
44
views
How to Change Raspberry pi 3 Boot order to Network boot with SD card Inserted
In Raspberry Pi 3 board, I am able to boot from network by changing the boot order to Network Modes as below :
sudo apt-get update
sudo apt-get upgrade
echo program_usb_boot_mode=1 | sudo tee -a /...
- 13
0
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0
answers
49
views
cant SSH into Raspberry Pi for the first time headless setup, login issue
I am trying to SSH into my Raspberry Pi 4 Model B for the first time.
I've successfully installed the Raspberry OS using the UI configuration tool from the official website and boot loaded and SSH ...
- 101
0
votes
2
answers
41
views
Raspberry Pi 4B giving 0.3V output when GPIO is set to True or High
I have a Raspberry Pi 4B, 4GB version. When I try to run the following code it gives 0.3V output. I mean it works, on-0.3V, off-0V. But I need 3.3V output. I measured it with a voltmeter, as the ...
0
votes
1
answer
41
views
Help loading backup in new rpi. It does not work
I am new here and this is my first question. If it is out of place I apologize, and please move it to where it belongs.
First of all I will put you in background:
In my building automation and control ...
- 1
0
votes
0
answers
30
views
Installation failure
I have an 8GB Raspberry Pi 4 my company gave me to configure. I installed Home Assistant on the 32GB memory card and placed it in it. I am using a Windows 10 system.
The issue I am facing is that on ...
- 1
1
vote
1
answer
94
views
Why is my measured I2C clock frequency significantly slower than its setting?
I am setting the I2C frequency on the Compute Module 4 (running Ubuntu 22.04.2 LTS) with dtparam=i2c_arm=on,i2c_arm_baudrate=400000. The I2C bus has two parallel 10kOhm pullup (to 3.3V) resistors per ...
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