Questions tagged [pi-4]

For questions that apply specifically to the Raspberry Pi 4 and not other/all models.

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25 views

Unable to login in Zoom with Google Sign In when running on Box86 emulation

I followed the instructions on this article (https://pimylifeup.com/raspberry-pi-zoom/) to run Zoom App using Box86 emulation. Everything worked as expected except I could not log in using Google as ...
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1answer
34 views

Booting Debian 10 Buster from Raspberry Pi 4B USB3.1 device

I have followed this YT video guide to be able to boot from a USB device on a Raspberry Pi 4B. It worked perfectly from my USB flash drive (#1) running Raspberry Pi OS. However, when I swapped out the ...
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2answers
46 views

How to make headless Raspberry Pi automatically perform a command over ssh?

I have a headless Raspberry Pi accessed from my Mac over WiFi. However, whenever I lose the connection, it stops doing whatever I'm having it do; is there a way to make the Pi do a command on its own, ...
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76 views

Raspberry Pi 4B cannot run Linux XMRig

I'm running a headless Raspberry Pi 4b connected to Ethernet and controlled via SSH from my MacBook Pro. I used scp to move XMRig for Linux over to it, preset to mine. However, when attempting to run ...
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1answer
44 views

Pi4 won't boot - 3 long / 3 short green flashes

My Pi4B wouldn't boot up the other day and have been trying many different things with no luck. I have everything unplugged from it except the official power supply. With or without the SD card ...
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30 views

Slower boot time

I have a raspberry pi 4b 8gb variant, using official raspberry pi 4 psu , with sandisk ultra 32 gb micro sd card. The problem is the boot time it take 6-7 minutes to boot. And while running it ...
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1answer
32 views

Raspberry Pi 4B power consumption headless with constant usage

I'm setting up my Raspberry Pi 4b 2GB RAM in headless mode with a 64-bit Raspberry Pi OS Lite. It won't have anything plugged into it, but for an ethernet cable. It'll be performing FAH tasks (...
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49 views

RPi4 audio periodically but randomly drops out

I am using a RPi4 and have connected it to ethernet and wifi, and run shareport to stream audio to my HDMI hifi (so I can have a wifi hifi!). I also installed Rhythmbox, so I can stream the radio to ...
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16 views

After activating Watchdog on Raspbian the system goes to login screen when system reboots after freezing

I have made the necessary watchdog settings for 2021-12-02-raspios-buster-armhf in accordance with Watchdog on the RPi4 in the operating system. When I test the watchdog with fork bomb command sudo ...
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23 views

pause raspberry pi 4 taking input from MFRC522 while the video is playing

The cards have video file names written to them. When a card is placed on the MFRC522 sensor, the video is played. Now, I am unable to figure out how to stop or pause the raspberry PI from taking the ...
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1answer
95 views

No HDMI video after boot sequence

Raspberry Pi 4B connected via micro-HDMI to HDMI cable to a 1920x1080 computer monitor. The boot sequence starts with text being printed to the screen (splash screen off) and when it should switch to ...
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25 views

Scapy python module isn't working and other solutions won't work on raspberry pi

when I run anyu python using scapy fully updated it does this: Traceback (most recent call last): File "/home/pi/pentest/NetScan/netscan.py", line 36, in <module> from scapy.all ...
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1answer
25 views

Streaming video+audio from Pi4 to Pi4 via ethernet

I would like to stream video & audio from one Pi4 (equipped with mic/cam) to another Pi4 (equipped with screen/speaker) via ethernet (cable connected directly between them). I've looked around, ...
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252 views

Raspberry pi 400 no sound over HDMI

I bought a Raspberry Pi 400 to connect it to my old TV (Telefunken) and make it a smart TV. I installed the latest Raspberry Pi OS, and everything works EXCEPT the sound. I connected the TV by the ...
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32 views

How to change the trackpad sensitivity on Raspbery Pi 4?

How can I change only the trackpad sensitivity on Raspberry Pi 4? My trackpad is very small and I'd like to change the sensitivity on it to make it easier to use.
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184 views

Consumer eSIM solution Raspberry PI 4?

Disclaimer: I don't have a lot of knowledge about hardware and cellular networks so these concepts are quite new for me, I apologize for the lack of knowledge however I'm eager to learn more and make ...
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1answer
36 views

Raspberry Pi 4B script won't run without being plugged in to monitor

I have a Python Script which takes input from a USB camera to monitor the face. The script runs as expected and runs automatically on start up when connected to a monitor. However, I need the script ...
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1answer
45 views

Air pressure transducer to be connected with RPI4

-I just want a recommendation for an analog air pressure transducer with a range from 0-10 bar (to be used in an electro-pneumatic system) to be connected easily with RPI4 (compatible with RPI4) and ...
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1answer
32 views

Delay booting devices or booting the kernel

BLUF: I'd like to see if there's a solid way to delay the boot-up of the kernel to keep a Pi from sucking up a lot of juice out of the gate, or the USB bus to delay the devices' boot-up until after ...
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1answer
79 views

How to use only pi-hole dns in Windows 10 client, exclude router dns

I have installed pi-hole on two Raspberry Pi 4 devices. Both are connected to my network and working. I have an ATT router, so I cannot change the DNS servers in the router. I am attempting to set ...
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0answers
38 views

Raspberry Pi 4B 8 Flashes on ACT Light

I have a Raspberry Pi 4B which was working for a while, when one day it flashed 8 times on the green ACT Light and nothing was displayed. I know that 8 flashes means broken bootcode.bin or something, ...
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1answer
25 views

Boots correctly but says "No HDMI signal" after finishing kernel boot logs

I have a Raspberry Pi 4 Model B (8GB), I have flashed the latest version of Raspbian into a USB flash drive and I boot it from there. I've had no problems so far. Today I restarted it after about 2-3 ...
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13 views

I would like to know please how to connect a GENSPEC GS4002 pressure transducer (13-30VDC input & 10VDC output) to raspberry pi 4? Thanks

this is the datasheet of the sensor (https://www.esi-transducer.com/wp-content/uploads/ESI_GS4000.pdf), I would like to know please if it is easier, better or cheaper to get another pressure ...
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24 views

Pi use monitor and projector at the same time

I have Raspberry Pi 3 Model B+. Now I use Pi with monitor using HDMI port but my project requere to have connected projector and to show static images on it. Projector will be controled with script(...
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164 views

RaspberryPi Compute Module 4 bootloader EEPROM update issue

One day I got a new CM4 Lite module and the official IO board. I wanted to try a NVME disk as a boot device but I found that original EEPROM didn't have this option enabled (BOOT_ORDER didn't have 6 ...
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2answers
89 views

UTF-8 support on Raspberry Pi

I want to run a python program that receives the data through serial communication and saves it to a file, but after receiving the data this error shows up. Any idea? (code runs ok in Windows but in ...
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0answers
31 views

GPIO9 Input Always Active

Porting an application from a RPi 3 to an RPi 4 that requires several button inputs. All are working properly, except the button in GPIO9 (Pin 21) is always high/true. Guessing this has to do with SPI ...
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1answer
42 views

Windows 11 Pro not booting when installed onto a USB via WoR:

I recently created a Windows 11 Pro ARM64 .iso through uupdump.net aria2c to .iso conversion everything went fine the .iso was made i then launched WoR (Windows on Raspberry) everything was done ...
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36 views

RPI 4 with wifi fails to ping addresses and websites: Destination Net Unreachable

we have several RPIs 4 which work without issue when connected to wifi (hotspot or directly via router). However, we currently have one RPI 4, which is connected to a hotspot from a laptop but is not ...
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20 views

Hdmi turns off after few seconds in raspberry pi 4

When I use capture card for display output it works fine but when i use monitor with hdmi output turns off after 2-3 seconds in raspberry pi 4
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Powering a Pi 4 with a small power bank [duplicate]

For my project SamplerBox, I had done many extensive tests in the past and it was possible to successfully power a RPi 2 for multiple hours with such a small 2600mAh power bank (18650-battery inside), ...
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91 views

Raspberry pi 4 vanilla debian 11 arm64

I have been trying to install "vanilla" debian 11 on my raspberry pi 4. By vanilla I mean the regular arm64 debian 11 net install iso which can be found here: https://www.debian.org/CD/...
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69 views

Problem with booting Raspberry Pi 400 from USB drives

Summary: I have a USB3 flash drive that I can use to boot my Raspberry Pi 400 without a problem, but only when it is directly attached to one of my my RPI 400 USB3 ports. However, when I attach the ...
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30 views

PI4 websdr-rpi needs libcrypto.so.1.0.0

Trying to move the websdr (ham radio web short wave receiver) software from Ubuntu16-04 desktop box to RPI4 but the program does not start requiring the libcrypto.so.1.0.0 All possible libssl and ...
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2answers
44 views

Raspberry Pi cannot connect to network

Hopefully someone has experienced this issue before but it may be a long shot... I was transferring some large files via smb to an external drive setup on my Raspberry Pi when the connection died. I ...
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24 views

Why am I getting "bash: javac: command not found" after supposedly installing jdk17.0.1 on Raspberry pi OS 64 bit?

So I followed The instructions here https://linuxhint.com/install-oracle-java-jdk-16-raspberry-pi/ Except I did so entirely on the gui of Raspberry pi OS. I downloaded the jdk file from the same ...
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0answers
51 views

RPi, Ubuntu, dual monitors no longer working

Raspberry Pi 4B 8GB; Ubuntu 21.10, X11; two BenQ EL2870U monitors I had some system problems after upgrading Ubuntu from 20.something to 21.10. Decided to start fresh: new disk, installed fresh ...
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1answer
20 views

Opening web-page in CLI

I have a Gmail API running in a docker container on raspberry pi. I only access the pi through an SSH session via terminal. It needs to authenticate me as a user. This requires that I go to a ...
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0answers
69 views

Redshift on Raspberry Pi 4

Is there any way to use Redshift on Raspberry Pi 4? I used redshift -P -O 3700 -g 0.7 -b 0.7 and it only works from time to time. Some times after restarting it doesnt filter the blue light anymore. ...
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37 views

LIRC error while trying to read file for AC controlling

After going through the steps mentioned in this tutorial, it all worked fine until the IR receiver(where I had a small issue of false input detection). When I tried to run sudo /etc/init.d/lircd ...
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0answers
22 views

RPi4B & miniDLNA-why is one drive accessible and the other not? (usb drives on a powered hub)

I have set up a Raspberry Pi 4B/2gb as a media server using miniDLNA. An Amazon Basics powered hub with two drives attached, has been installed. One drive is 500gb and has two partitions, one a ...
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1answer
37 views

Why did Pi-4's port layout change?

If you look at a Raspberry Pi 4 B from port side the side of the USB ports, it's a striking difference to previous B-models that USB block and ethernet jack have switched places. To me this is a ...
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0answers
36 views

Raspberry Pi 4 crashing(?) after OS is installed

I am trying to boot up my raspberry pi 4, but the green light (next to power) keeps blinking and then shutting down! I was able to install Ubuntu Desktop on the 32GB microSD, but as soon as I tried to ...
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3answers
54 views

Is there any advantage powering up a RPi 4B with a PSU rated for 8A @ 5V?

I have a Raspberry Pi 4B 4GB RAM variant that will be running 24/7 with the following attachments: an ethernet cable leading to a router for internet connectivity a 2.5" external HDD attached ...
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1answer
61 views

do i get more io from a cluster?

suppose i have a cluster of 2 pi 4s (8 gig model and 32gb sd cards). i will get 2 seperate computers together having 4 cores and 8gb ram (based on jeff geerling's blog https://www.jeffgeerling.com/...
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1answer
159 views

problems installing deepspeech on a pi 4

Ive been trying to get Mozillas deepspeech installed but i keep running in to the same problem. here is the terminal output pi@raspberrypi:~/dev/deepspeech $ pip install deepspeech Looking in indexes: ...
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1answer
80 views

how to increase fps of yolov3 on raspberry pi 4

I'm currently doing real time object detection with the help of pi camera using pre-defined weights of darknet and coco dataset using openCV. Currently I'm getting 0.14 fps and my video is too much ...
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0answers
16 views

i have a problem with trying to open dhcpcd on rpi 4

so when i open the wi-fi settings I get the warning "Error saving /etc/dhcpcd.conf". i have tried nothing yet because I don't know what to do
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1answer
30 views

How to nest 4 Gpu with Raspberry Pi 4 Model B?

currently i'm trying to nest 4 Gpus with my Raspberry Pi 4 Model B RAM 8GB. could anyone told me how to do it ? i would to use Raspberry Pi to Mining Crypto.
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1answer
67 views

Can I use USB 3.0 port to power RPI4 + external SSD?

On the Pi-4B, can I use one of the USB 3.0 ports for power, instead of the USB-C port? I will be powering the Pi-4, an SSD drive (Sabrent 512GB Rocket Nano), and a Conbee II — which btw currently ...

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