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I inverted 2 GPIO pins. Is pi4 dead?

friends. I plugged in an LCD screen using single cables and accidently inverted the two top pins, numbers 1 and 2 as per the image reference. So 1 on the screen went into 2 from the Pi and vice versa. ...
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13 views

VNC and Putty not connecting to raspberry pi 3b+ headless again, internet connection also affected by raspberry pi connection

I have been using my Raspberry Pi 3b+ model for months now, with the headless setup. I connected the pi to my laptop hotspot (i.e., added the wpa_supplicant.conf file containing my hotspot ssid and ...
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11 views

Ubuntu server could not get clk: -517 on boot

I have a Raspberry Pi 4 8gb running ubuntu server 20.04, having the root partition through usb to a 1Tb ssd. And recently when booting the system, it displays this error: [ 1.313819] spi-bcm2835 ...
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2 answers
36 views

Where is the configuration setting for enabling and disabling low voltage warnings in Bullseye 64 bit?

I'd like to know where the configuration settings are set for the Bullseye 64 bit Raspberry Pi OS to enable or disable low voltage warnings, for both the terminal and the LXDE desktop environment. It ...
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1 answer
33 views

hc-sr501 goes high every minute

So I bought three HC-SR501 PIR and all of them keep trigging (high) every single 60 second on the dot. I don't know what I am doing wrong. The PIR does detect motion when a person is moving but it ...
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1 answer
33 views

Recording an IR signal and play it again on Raspberry Pi bullseye

I have a Teco aircon with an ifrared remote. I connected an IF receiver and an IF transmitter to my Pi and they are working fine. EC systems are different to TVs, in that they send a rather long ...
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  • 111
-2 votes
1 answer
32 views

control motor with raspberry pi and pi4j 2.0

I want to control a motor and a servo motor using a Raspberry Pi. As I searched, all projects are for pi4j v1.0. I'll be grateful if you guide me. Thanks in advance.
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1 answer
19 views

Seeed Respeaker speaker output is very low

I am using ReSpeaker 4 microphone array kit with raspberry pi to get the ASR system. Respeaker mic array has its own speaker output (not the jack output) on board but the output volume is very low. ...
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20 views

multile websites using lighttpd? I.E. just 2 for now

i am using bullseye on a pi 4. would like to understand the configutaion files on how do i set up 2 websites to be accessed from the Internet?
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1 answer
14 views

Increase I2C-Speed with Hyperpixel 4.0 mounted

i hava a Hyperpixel 4.0 mounted on my Raspberry Pi 3A+. Because of the Pin overlay for the Hyperpixel 4.0, the I2C bus is not Standard and is created on the Physical Pins 19 and 23 on my Raspberry. (I ...
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1 answer
12 views

Python program runs successfully through Thonny IDE but I get ModuleNotFoundError when I run the same through Terminal

I have a python code for attendance system which I'm trying to run in raspberry pi. I'm using python 3.9.2 and have installed all the required libraries through terminal. The code runs fine in Thonny ...
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  • 3
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1 answer
26 views

Prolific Technology pl2303: unknown device type

I am trying to connect a Prolific pl2303 to my raspberry pi 4 running raspberry pi os 64 bit. When I look at dmesg I get the following output: [ 31.714397] cam-dummy-reg: disabling [ 44.046197] usb 1-...
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  • 261
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2 answers
39 views

Makefile file format not recognized when using cross compiler

I setup a container to cross compile my program so taht i can run it on a Raspberry Pi. It compiles fine when using ${CC} but prints: /usr/bin/arm-linux-gnueabihf-gcc -o test main.o CAcquireData.o ...
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0 answers
26 views

How to open website with Python with 'sudo' permission?

I am writing a Python script to run on Raspbian that opens a webpage using webbrowser.open() and also writes to the GPIO pins to control some external LEDs. The problem is that writing the GPIO pins ...
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0 answers
11 views

bluetooth pan priorization over 4G in iphone

So, I created a Bluetooth PAN connection between the raspberry and the iphone using the following: How can I set up a bluetooth PAN connection with a Raspberry Pi and an iPod? everything went ok, the ...
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1 answer
50 views

Where's the windows 10 driver for the Raspberry Pi Pico?

I have a brand new Raspberry Pi Pico. And when I connect it to my Windows 10 PC i get a new device with missing drivers. Guess what: pressing "Update Driver..." is not very helpfull here. I ...
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  • 1
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1 answer
20 views

Which server software can be used to robot remote control from a browser?

I'm considering to make a Raspberry car robot with camera which can be controlled from a web browser (via WebRTC). Is there any services/SaaS/open-source-software which I can use for building ...
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1 vote
1 answer
32 views

Raspberry pi 4, UART4 and SPI0

Raspberry pi 4 has 4 usable uart ports, uart 4 with rx in gpio 9 and tx in gpio 8, share rx pin with SPI0 miso0 pin. I would like to use both peripherals no ate the same time, but in different moment ...
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0 answers
24 views

Unable to connect to Raspberry Pi 3 B+ from MacBook Air through wire

I am trying to establish a wired connection between my RPi 3 B+ and my MacBook Air. After I connected the two devices with a wire, my MacBook got IP=169.254.214.218, and my RPi got IP=10.0.0.21. When ...
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  • 1
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0 answers
14 views

Will the arducam 16mp autofocus camera work on a raspberry pi 2?

I will be getting this camera, the arducam autofocus camera, https://www.arducam.com/product/imx519-autofocus-camera-module-for-raspberry-pi-arducam-b0371/ and a raspberry pi 2 for my first project. I ...
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0 answers
16 views

cvlc command only shows video on primary display

I am experiencing some trouble getting a video using vlc to play on my secondary display on Rasbian Bullseye. my command from the terminal for my primary display looks as follows: cvlc -f --play-and-...
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  • 1
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0 answers
16 views

HDMI TV works only with hdmi_safe=1

I'm connecting TV display to Raspberry Pi4B via HDMI and it works only in safe mode (low resolution). Here is working /boot/config.txt: hdmi_safe=1 dtoverlay=vc4-fkms-v3d max_framebuffers=2 [all] ...
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1 answer
23 views

weird @^ in log files

i recently checked my log files and found lines just consisting of "@^@^@^@^@^@^@^@^" like specific lines have been removed from my log files, during the system bootup. here are 4 images. ...
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0 answers
12 views

NPM and Node very Slow on Raspberry Pi 3 running Ubuntu 20.04

I try to run zigbee2mqtt on my Raspberry Pi 3 running Ubuntu 20.04. But the installation of the Node.js dependencies is painfully slow and does not finish. What can be the problem here that everything ...
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2 answers
39 views

strange RPi4 Crash that knocks router off the internet

I've been using a raspberry pi 4B with 8GB of ram for about a year now. Common Features Raspberry Pi 4B 8GB booting from an SSD connected to the internet via wired connection running cron jobs, ...
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  • 126
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0 answers
21 views

How to connect cellphone display to Raspberry Zero [duplicate]

I need to connect a Umidigi A5Pro cellphone display to my Raspberry Zero 2W. How can I do this? I'm new in electronics...
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0 answers
9 views

Raspberry Pi4- Dual HDMI -fbi

I am trying to display tkinter GUI on raspberry pi touch screen which is on hdmi0 and project the images using projector on hdmi1. But when I click the button to project image ie when I execute the ...
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0 answers
19 views

Possible to install Raspbian on iPhone using CheckM8?

I understand the reverse of this question has been asked before (can iOS be installed on an RPi), but I haven't seen this asked. With CheckM8 and CheckRa1n, would it be possible to bootload Raspbian ...
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1 answer
33 views

Is the Boot Partition unique to a Raspberry Pi?

I have ten Raspberry Pi's. I'm flashing Raspberry Pi OS Lite to each of these, using Raspberry Pi Imager and after flashing need to edit the cmdline.txt & config.txt found in the Boot partition of ...
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  • 101
0 votes
1 answer
22 views

How to decode struct data sent from an Arduino via NRF24L01?

So basically I'm sending this struct data from my Arduino to my RPi, both fitted with an NRF24L01 module. Library on the Arduino is tmrh20, and on the RPi, BLavery. struct values{ char ...
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-1 votes
1 answer
51 views

Standard Passwort not Accepted – Headless Setup [duplicate]

I downloaded the most recent version of Raspberry Pi OS, saved a wpa_supplicant.conf and a ssh file in the boot partition, but I was not able to ssh to the pi with ssh pi@raspberry.local as the ...
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  • 1,079
0 votes
1 answer
21 views

What is better to write/read to the USB or the SD card in terms of speed and reliability?

I have been using both the SD card and the USB drive to save large files (videos) over a long period of time (weeks) and wondering what is best (and why). I have had problem with both (lags, corrupted ...
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  • 123
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0 answers
21 views

Raspberry Pi 4 displays colored vertical lines

I have seen this question asked but I couldn't figure out if the color scheme tells something or not. Bottom line is the PI was working flawless until one month ago. I did not have time to check it ...
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0 votes
1 answer
27 views

GPCLK vs PWM using micropython with Pico

I have a DC motor I can spin via ESC connected with a Raspberry Pi 4, but I want to use a Raspberry Pi Pico instead. Using GPIO4, that has the clock, I have this code that works for spinning the motor ...
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  • 101
0 votes
0 answers
18 views

No internet and bridge100 interface has no IP, no SSH to Pi?

I'm on my Mac OS. I have internet sharing enabled on the wireless interface. When I have wifi I can ssh to the pi using the bridge100 IP + .1 But if I have no wifi (as in no router or in any LAN) or ...
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  • 1
1 vote
0 answers
40 views

Shorted Raspberry Pi Pico 3v3 pin to GND

I accidentally shorted the 3v3 pin (36) to GND pin (38) for a split second. It turned off, but after that it seems to be working. Did I damage it in some way? Is it safe to use after this?
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  • 131
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0 answers
31 views

I2C sending data from arduino to python gives gibberish data

It's my first time working with SMBUS and I've read the docs of arduino and the Wire object. It states that I can send a string. To quote the docs: string: a string to send as a series of bytes. https:...
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-1 votes
0 answers
10 views

xforwarding or thin client for digital signage?

my Raspberry Pi 3 is not powerful enough for showing Videos in a Browser. I think it should get the power from somewhere else - is x forwarding a good Idea? Or should i use some Thin Client solution? (...
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  • 1
0 votes
0 answers
13 views

Some gnome apps look inconsistent with the default Raspbian theme

Some GNOME applications such as epiphany-browser or simple-scan look inconsistent when I'm using the default Raspberry Pi theme (lxappearance says it's called Pixflat). The windows have dark gray ...
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  • 111
0 votes
0 answers
24 views

Picam preview shows on HDMI monitor, but not GPIO connected display. How to fix?

I'm making a project that requires an automatic and constant preview from the camera shown on a small LCD display. I managed to have the camera preview upon the Pi startup by adding raspivid -t 0 -f ...
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1 vote
1 answer
26 views

debug dhcpcd using the lease file at /var/lib/dhcpcd/*.lease

I am having problems with the dhcp leases of my eth0 interface. My rpi does not renew its lease when it expires. My lease file has many special characters, is this normal? My configuration : Compute ...
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  • 13
0 votes
1 answer
19 views

Timeout when browsing network

This happened suddenly on a pi 4, with no clear reason (system update, maybe?): When I'm logging on the GUI console, open the Raspbian File Browser (which is pcmanfm), click "go to" => &...
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  • 1
-1 votes
0 answers
19 views

How to set up RPi as a local router not connected to the internet [duplicate]

I am looking to set up an RPi as a router so I and others could have access to the data stored on it using our phones without the need of internet access. I believe this is possible, as it has been ...
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0 votes
1 answer
32 views

How to change IP address on a live system?

I want to change the IP address persistently on a running rPi, by running a script. I tried now to change the /etc/dhcpcd.conf file and running sudo systemctl restart networking and sudo systemctl ...
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0 votes
0 answers
47 views

Help! Designing a 3 push button circuit that sends emails

First time posting here. I'm in a bit of panic mode because I need to deliver a project this Wednesday and I'm having issues with my coding. As the title says, I'm using a circuit of three push ...
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-1 votes
0 answers
43 views

Cannot access headless PI via SSH after upgrading from Buster to Bullseye

Yesterday I upgraded my PI from headless Buster to headless Bullseye. I can ping my PI, but SSH no longer works. The connection is refused. I tried to fix this problem by adding an ssh file on the ...
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  • 99
0 votes
0 answers
19 views

Why can't I start OpenVPN outside the directory?

I am trying to set up Pi running 5.10.60+ to be a VPN portal. When I start openvpn from within /etc/openvpn, I see this pi@safeSpace:/etc/openvpn $ sudo openvpn us-free-01.protonvpn.net.udp.ovpn Sun ...
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0 votes
0 answers
21 views

CUPS HPLIP config problem

I am trying to connect a HP LaserJet 4 to CUPS/HPLIP. Originally, I was using Raspi OS 11.3 and getting nowhere but eventually discovered "hp-setup" which listed loads of missing ...
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  • 33
-1 votes
0 answers
17 views

Wrong sound output when using pygame

I am using a raspberry pi 4 and am having issues with the sound output. I am trying to run a program in python using pygame to play an audio file when I run the program. The program works and it plays ...
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-3 votes
0 answers
51 views

How to create c/c++ program that runs on startup?

I am new to raspberry pi. I have been stuck on this problem for a few days, but haven't managed to find a solution to this problem although I know it has to be possible. Basically I need a way to ...
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