Questions tagged [raspberry-pi-os]

Raspbian renamed Raspberry Pi OS (32-bit)

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Pigen stage fails due to CA cert validation for get.docker.com

Sometime between Jan 14 and Feb 10, 2021 there was a change that started breaking our pi-gen build which installs docker as a custom stage. The error message in the build comes from the shell script ...
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88 views

hdmi_cvt ignored on my boot/config.txt

I am testing a LCD HAT ( ST7735S ) that I bought and it is working great with fbcp, but I can´t get raspberry pi os to run at native screen resolution ( 128x128 ). I´ve been reading all documentation ...
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1answer
117 views

Installing Pi-Hole on Raspberry Pi OS via Windows: port 22: Connection refused

I've installed Raspberry OS on a MicroSD via the Windows installer downloaded here. I then used this tutorial. However, when I try curl -sSL https://install.pi-hole.net | bash via the Windows command ...
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54 views

Raspberry Pi - Chromium OS Only - Autostart

I am trying to reduce my Pi load to just Chromium and then change Autostart to go to fullscreen on boot. I have other Pi working on like Raspbian and have to change autostart. But I do not need to ...
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19 views

How to open a REST API port to internet while being connected to mobile hotspot for Internet?

I have a raspberry pi 4. Latest version for Raspbian [Full] installed. I have a rest API runnning on it. Which works if I send a request from locally connected devices. But unable to figure a way to ...
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1answer
129 views

1.44 inch ST7735S lcd screen on gpio only white output [closed]

I recently bought an lcd screen on ali express that is attached to the gpio, but the system does not detect it, screen is constantly white and output is only on hdmi. I tried turning spi on raspi-...
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1answer
67 views

How to send data from RPI to Arduino via I2C

Im working on a project to build an autonomous lego car. Im running into some problems here, and i could use some help. Right now, im struggling to send and receive data from RPI (4) to Arduino (Nano)....
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2answers
228 views

raspberry pi as gateway lan/wifi

I bought Raspberri Pi 4 and installed predefined OS on it (I am using it headless). Raspberry pi is not connected to internet. Now I need to do this: in RPI Lan port is connected computer (device), ...
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2answers
523 views

Can't connect to Pi on local network via raspberrypi.local from Windows

When I first got my Pi about six weeks ago, I could follow the setup instructions easily, and connect to the Pi using raspberrypi.local (without the Bonjour service installed on Windows). However, for ...
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4answers
4k views

Turn off screen reader in Raspberry Pi OS?

This is a fun one: somehow, the screen reader accessibility setting has been turned on in my Raspberry Pi OS environment. I can't figure out how to turn it off! Other than turning off all audio, the ...
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1answer
68 views

Can turicreate python library be installed on raspberry pi?

Hello all, Recently I am trying to install turicreate library on my raspberry pi 3 model B+ by following all the required steps to be done for installation for operating systems like Ubuntu which is ...
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130 views

How to erase the onboard eMMC of Raspberry Pi Compute Module 4 I/O Board?

I have already set the flash Raspberry Pi OS onto the Compute Module 4 eMMC with usbboot but I accidentally placed the jumper on the J2 connector (Pins for disabling eMMC boot) while the system was ...
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31 views

Setting up an AP from C code rock solid

I have to develop a program for RBPi4 with latest Raspberry OS. I'm coding in C because that's what i know for now. After startup the device's first task is to create a WLAN with predefined ssid, ...
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1answer
40 views

how to log and view system messages on PiZeroW?

My Pi stopped responding yesterday. It normally serves an html page with sensor data using apache. When I browsed to the IP I got 403. When I tried to SSH I got kex_exchange_identification: read: ...
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2answers
104 views

MCP23008 I2C bus device address by "i2cdetect -y 1" is not stable

When I connect the GPIO expander MCP23008 to the raspberry pi 1 model B+ via I2C, the address of the MCP23008 on the raspberry pi keeps switching between 0x20 and 0x21, and sometimes it's not even ...
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27 views

Robot Function Queue

I'm trying to build a restful microservice that controls my robot. Basically, someone(or an app) can hit a URL and move my robot. This is just for fun on my local network. So far, it works well enough ...
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1answer
171 views

Can I move my SD card with Buster from a Pi 3 to a Pi 4? [duplicate]

To get better performance, I want my existing setup on my Pi 3 moved directly to a Pi 4. Can I just switch the SD card from the Pi 3 to the Pi 4 for it to work properly? The SD card contains a fresh ...
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1answer
100 views

How I can Communicate between raspberry pi4 and multiple ZigBee (XBee) and sensors, RFID

How I can Communication between raspberry pi4 and multiple ZigBee and sensors Hello, I have one raspberry pi4 and 3 sensors (Temperature, Ventilation, Light) and one RFID how I can communicate between ...
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37 views

How to full screen the app window in Rpi 7in TFT

I'm currently working on an app for rpi using kivy that will be displayed in a 7in TFT. I used the 7in TFT resolution as window size (800,480) I am developing the code in windows pc since coding it in ...
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0answers
119 views

Can not see Pi Zero on my network

I can't seem to find anything on here already with the same case so I'll go ahead and ask. I am trying to connect to my pi via SSH, but I can not see the pi on the network. I have: Flashed the SD ...
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476 views

Getting Minecraft Pi off full screen so I can program with Python in a separate editor

I'm new to Raspberry Pi OS, I've installed VSCode (ARM version), and Minecraft Pi (from the terminal). Now I need to be able to run the game in a smaller window (not full screen) so I can see my ...
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39 views

Why my Brushless motor Motor code is depended on another code in raspberry Pi? [closed]

I am very new to raspberry pi and hardware. I want to run a brushless (A2212/15 T 930Kv) Motor with ESC (Electronic Speed Control 30A). I found a code which runs my ESC and motor through loops. Then i ...
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45 views

No camera preview

I have a problem, when I write the command "raspistill -o desktop/image.jpg" in the terminal there is no output. How can I solve this problem is urgent... and btw the Geany programming ...
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2answers
82 views

Raspberry Pi disconnects after login

I'm using a Raspberry Pi 4B over SSH (without a desktop). For the past week, every time I try to log in, it closes the connection. I haven't changed any settings. After I enter the key and password, ...
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72 views

Can't get sound on Raspberry Pi's 3.5mm audio jack

I've been asking this question everywhere. I've checked lot of resources, manuals, documentations out there. But couldn't get any sound out of my speaker. I tried the YouTube video tutorials also, but ...
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1answer
76 views

Files in mounted USB drive use up HDD not mounted usb drive

I've got a Pi 4b that is booting/running from a ssd and running some home automation software (Home Assistant) that creates backups and places them in /usr/share/hassio/backup. This location for the ...
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2answers
99 views

Show USB HDD disk % usage on i2c OLED

I have set up a Adafruit 128 x 32 i2c OLED display to show: hostname, IP address, CPU, Memory usage and disk usage for my backup server. The drive is mounted and accessible at /home/pi/backup I would ...
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50 views

Casting from Pi400 to Pi Zero W, possible?

So I have a Pi Zero W I've been wanting to use and was wondering if I pick up a Pi400, can I cast to the Zero W after turning the Zero W into a Chromecast dongle or something along that line? I was ...
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2answers
363 views

Is it possible to boot a Raspberry Pi 4 from a GPT USB-connected disk?

Similar question was asked here, but the answer is out of date and I don't have enough reputation to ask in a comment. I know it's possible to boot a Raspberry Pi 4 from USB with the latest firmware ...
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21 views

Opening app goes straight to menu bar - no full screen

Have been running a headless Pi-hole on a Pi4 for months - greatest thing since sliced bread. Decided it was probably time to backup the SD card so hooked up a monitor and mouse and booted. Was ...
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1answer
2k views

How can I restore my raspberry pi sources list

I changed something which bricked my rpi. I changed sources.list and raspi.list then when I run sudo apt update I am getting this error: E: Malformed entry 1 in list file /etc/apt/sources.list (Suite) ...
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1answer
885 views

How can I use camera in raspberry 64 bit

raspberry pi 4(ram 4g) raspberry buster 64 bit pi camera I tried and knew that raspistill or pi camera doesn’t work in 64 bit os. (64 bit os is beta version so It doesn’t support it) Is there any ...
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146 views

Error - running openCV on RaspberryPi4 via Putty

I am newbie and just found out some weird error. import cv2 cap = cv2.VideoCapture() # The device number might be 0 or 1 depending on the device and the webcam cap.open(0, cv2....
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384 views

Raspberry Pi zero bluetoothctl connection fails to a device

I am currently trying to create a script to connect a Bluetooth printer to my raspberry device using CLI commands. So far I have tried using bluetoothctl but it freezes/crashes whenever I try to ...
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2answers
375 views

After writing Raspberry Pi OS to SSD, I cannot add ssh file

I am trying to boot my Raspberry pi 4b from an SSD. After following the most recent instructions I could find for allowing booting via USB (updating bootloader, setting boot order), I installed ...
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1answer
89 views

I need to run the command "sudo service dnsmasq start" on every startup

I need to run the command "sudo service dnsmasq start" on every startup as I'm using my raspberry as a network bridge (from wifi to ethernet) I know the command works but it's hard to start ...
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1answer
23 views

Raspberry / SIM900A module calling problem

I am trying to call my phone from raspberry pi through SIM900A module , I interface the wires well and the module blinking . the python code run and say that its calling, but my phone don't ringing ? ...
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1answer
303 views

Python script not playing audio when run through systemd

After trying every possible solution online I am posting this question. I have a python script that runs on boot with the help of systemd. Everything worked fine till I installed a fresh raspian ...
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1answer
35 views

Same Raspberry, same configurations and and same pythoncode but diferent results

I have two raspberrys p4 4gb ram ( same model ). I instaled rasp os in a sd 32gb and in there it was instaled opencv dlib and other things to run a object detection. after that i cloned my sd to other ...
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0answers
50 views

No Recommended Software menu after updating and upgrading

I'm a beginner using a Raspberry Pi 3. I ran the commands, sudo apt-get update and sudo apt-get dist-upgrade, rebooted and logged back in and there is no menu for Recommended Software. I also ran the ...
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1answer
49 views

How to make Raspberry Pi connect to my Wifi using headless method?

I have followed many tutorials (actually they have been doing the same thing) on how to set Raspberry Pi to connect to my WIFI but I am not winning. I have used the Headless method and my network file ...
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1answer
121 views

Permission denied (publickey) - New computer, old key

The situation is the following: I have a raspberry pi, with authentication off, and a ssh key with passphrase. The computer where I generated the ssh key doesn't work anymore, but I have backups of ...
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2answers
69 views

How do I connect my new Raspberry Pi 4 Model B to my Laptop?

So I got my new Raspberry pi yesterday I have been trying to connect the raspberry pi to my Laptop that has windows 10. I have been using software like puTTy but I can only get in the raspberry pi and ...
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1answer
54 views

How to safely shutdown raspberry pi

I have a iono-pi which sits on top of the raspberry pi. I have connected this to a machine so the pi is getting power from the machine. When the machine starts for production, pi also starts and when ...
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1answer
101 views

Access Denied when scanning for BLE (Bluetooth Low Energy) devices

I'm running an up to date version of Buster on a Pi 3B+ (v1.3) and my Python program dies with txdbus.error.remoteerror: org.freedesktop.DBus.Error.AccessDenied: Rejected send message errors unless I ...
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0answers
107 views

How do you encrypt SWAP on Raspberry Pi OS?

I followed the instructions at Transparent Encryption For a User's Home Folder to encrypt my home folder. It all worked except the last command: sudo ecryptfs-setup-swap returned: Unknown device &...
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1answer
317 views

Adding A Desktop Environment To Raspbian/Raspberry Pi OS Lite

I am planning to make a mini NAS cum Pi Hole and Desktop Computer (For Emulation and Surfing) on my Raspberry Pi 4. I plan to install a desktop environment over Raspberry Pi OS, probably something ...
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1answer
155 views

Raspberry pi OS is 32bit?

I haven't used the Raspberry Pi website in a while, and I want to download and install the Raspberry Pi OS to an SD card, to boot my Raspberry Pi 3b+. The website keeps telling me the OS is 32 bit. I ...
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3answers
5k views

Failed to start dphys-swapfile.service

I just got my raspberry pi 4 and I set up my pi by berryboot. Then I did sudo apt-get install sysbenchon my pi which game me E: Unable to locate package sysbench. I looked up line and triedsudo apt-...
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1answer
221 views

Ubuntu 20.04 'Focal' cannot find all I2C devices via i2cdetect; it get a few, though

This is puzzling me: I use Ubuntu 20.04 'Focal' on a RPI CM4. When I run i2cdetect -y 1 to list the connected I2C devices on /dev/i2c-1, I get a few addresses back that correspond to the custom PCB I ...