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20 views

How good is the Raspberry Pi 4 (4gb) for video calls

I am planning to dedicate a RPi4 for a conference room just to keep the video meeting (no sharing of desktops or anything else) with let´s say MS Teams 365 on line, or other installed software. Has ...
-1
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0answers
25 views

mistakenly deleted /usr/local directory from raspbian running os

I have mistakenly deleted /usr/local folder, if I reboot my os what will get affected will it boot, the pi zero was only running motion eye. I have old ls result thats says what it contained. ls /...
1
vote
1answer
24 views

How do I set up a remote ssh connection from my raspberry pi?

I really need some clarification regarding how you connect to a remote server which then forwards requests to certain ports. In an ssh tunnel, are you establishing a SOCKS proxy? How do I get a server ...
2
votes
1answer
56 views

Is Raspberry Pi a good system for a middle schooler to learn to code?

I have no experience with the Raspberry Pi system, but I have heard a lot of good things about it. My son is interested in learning to code (any kind of coding at this point), and I am wondering if ...
2
votes
1answer
74 views

Oh no! GPIO again!

I'm working at this source: https://github.com/ozw1z5rd/ninepin/blob/master/iec/iec.c int iec_init(void) { int result; int minor; if ( request_mem_region(GPIO_BASE, 4096, LABEL_DEVICE) == NULL ...
1
vote
1answer
48 views

Raspberry pi 3B+ vs Raspberry pi 4

what are pro and cons of Raspberry pi 3B+ vs Raspberry pi 4 ? For a new beginner like me which one to start with either Raspberry pi 3B+ or Raspberry pi 4 ? Thanks in Advance!!!
1
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0answers
18 views

(Pi 3B) CPU Usage turn low while using video record and servo

I am doing a project is using Robot arm to classify package has QR code. Webcam starts streaming and if it scans correct those QR which I set in Python code, the Robot arm picks and places it to other ...
0
votes
1answer
47 views

Is this a new RPi 3B revision?

I recently purchased a Raspberry Pi 3B board, but comparing it to other units I have seems somewhat different. It has the processor of the 3B+ model, the BCM2837B0, instead of the BCM2837 of 3B model. ...
1
vote
1answer
19 views

Missing lxsession in the home directory cd ~/.config

I am running the following os image on my pi 3 model b: Raspbian Buster with desktop and recommended software Image with desktop and recommended software based on Debian Buster Version:September ...
0
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0answers
17 views

Finding source code for the Atmel MCU on the PoE Hat

I have recently purchased a raspberry pi 4. I have a small DC cooling fan for it, but I am limited to it being constantly on, which is annoying. I have seen (but do not need, or personally have access ...
2
votes
1answer
33 views

Pi Zero Fails to Raise Network Interfaces

I recently installed Kali Linux on my Raspberry Pi Zero W and following this guide connected it to my local WiFi network. I was able to connect just fine on the first try as well as the second try and ...
0
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0answers
18 views

unable to connect DREVO bluetooth keyboard to RPi3

I'm trying to connect a DREVO Bluetooth keyboard to the RPi3 B rev2 running Raspbian 9. With the keyboard in pairing mode, I am able to use the Bluetooth menu, scan and find the device to add, and a ...
0
votes
1answer
42 views

Which process is accessing the SD card?

I have a Raspberry Pi3 Model B+ that is used as a backup server. The backup tool is configured to write all data to an external NTFS formatted drive. However, the SD card is constantly accessed (...
0
votes
2answers
26 views

Enable /dev/ttyAMA0 on Debian (not Raspbian)

I have an RaspberryPI 3+ with Debian installed on it. I'am trying to connect a serial device (Raspbee) via the GPIO pins like this. Under Raspbian this worked by enabling UART in raspi-config after ...
1
vote
1answer
53 views

Why does my python script work in Thonny but not from the console?

Why does my python script work in Thonny but not from the console? (And yes I've tried running it from the console using python3.) Does Thonny run it in a loop that the console doesn't? Thank you. # ...
0
votes
1answer
25 views

TV no longer showing up on cec-client scan

I am using a Raspberry Pi model 3 as a simple signage display (web page through Chromium in kiosk mode) and have used cec-utils to manage on/off times for the TV. I have had this same setup for about ...
0
votes
1answer
27 views

Detect what exact phone was connected to rpi

I'm trying to develop small app detecting when/which phone was connected / disconnected to rpi and than base on that take some actions it should work with both android and apple phones I know how to ...
0
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0answers
20 views

I have a question about setting up the microphone

pcm.!default{ type asym playback.pcm{ type hw card 0 } capture.pcm{ type plug slave.pcm “hw:1, 0” } } ctl.!default{ type hw card 0 } Can you interpret each coding language? I'm asking you a ...
1
vote
0answers
42 views

Audio Jack Issue PI 3

I have connected my external speaker to the audio jack that only is powered by an adapter. The audio seems not to be working for some reason. It tells me that there is no soundcards found. Whenever ...
0
votes
0answers
14 views

Gameboy Advance Games will not load in a retropie for the lr-gpsp emulator

All games gba I have tried will not run when running them on a retropie. When starting up the game, it shows the splash screen to allow you to config it before its runs, but instead of the game ...
0
votes
1answer
36 views

Where did /dev/video0 go?

The Pi camera in my Pi Zero W stopped working. Possibly because /dev/video0 vanished. Can anyone say why? In the meantime I have these three devices instead .. pi@easy:~ $ ls -l /dev/video* crw-rw---...
0
votes
1answer
32 views

USB mount : space issue

I added a 256 GB USB stick , mounted in : /mnt/mydisk I setup all my docker to have they files stored in the USB stick: e.g: docker create --name=transmission \ -v /mnt/mydisk/Download/Deluge/...
0
votes
0answers
10 views

Mini usb 2.0 microphone not detected

I googled but didnt find an answer. I bought usb microphone like this: https://www.ebay.com/itm/USB-2-0-Mini-Mikrofon-Stecker-f-r-Windows-PC-Mac-Linux-Raspberry-Pi-Mikrophon/112352215940?pageci=...
0
votes
0answers
32 views

Pi zero w BLE connection disconnects

I have some strange problem with connection between raspberry pi zero w and BLE device (electric scooter). When I try connect to ble device via bluetoothctl service it connects properly but ...
0
votes
1answer
38 views

How many analog pins does a Pi model B + have?

I've read there https://www.raspberrypi.org/documentation/usage/gpio/ that we have 4 pins which can be used as analog, but other people say that we use only 2, so what's the correct answer?
0
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0answers
14 views

Realvnc has two sessions listed for 1 user to connect to. How do I merge them?

It's the same user(pi), same pi. But different desktops when I log in (see left and right). I just want one raspberry pi session for simplicity and am interested in how I even managed to create two ...
1
vote
0answers
41 views

How to make it run without internet connection? - what part of code keeps it from running?

My RBPi zero has a spotty reception close to the door where it keeps monitoring registered phones on bluetooth and trigger the door opener. What are the options to make it work without/irregular wifi ...
0
votes
0answers
16 views

Auto launch program when I plug raspi into computer?

As the title says, is it possible to launch an exe or run a command when I plug my raspberry pi into my computer so that the program launches ON THE PC/MAC. I know you can auto boot something when you ...
2
votes
1answer
42 views

Using a RPi 4B to create a client bridge from WiFi (internet) to local devices using Ethernet - Can it be done?

I have organized an IPv4 schema for my company's equipment that allows us to know what type of asset it is and the unit number. I'm trying to grant this equipment roster access to a wireless network ...
-1
votes
0answers
18 views

How could I build my own active noise-cancelling headphones?

Obviously it doesn't have to work completely, rather just as a proof-of-concept. I'm thinking of something along the lines of a microcontroller/computer program that could take in the ambient sound of ...
1
vote
2answers
47 views

Which of those listed logic level MOSFET to choose for driving a heater

I'm planning to control 3 LEDs and a heating element (5 Ohms) using a Raspberry Pi. The main power supply outputs 12V & 5A. Using an L78S05CV Voltage regulator, I'm planning to power the RPi. So ...
2
votes
1answer
25 views

Installing pip3 mysqlclient results in error

I have tried a few different ways to get this installed. mysqlclient and also tried pip install MySQL-python both result in error. pi@raspberrypi:/ $ pip install MySQL-python Looking in indexes: ...
3
votes
3answers
114 views

Pi 4 SSD boot stuck on rainbow screen

I'm trying to set up boot from SSD drive, I followed this tutorial, but the raspberry pi 4 got stuck on the rainbow screen and did not boot up. I copied the SD card to SSD using SD card copier, ...
-1
votes
1answer
45 views

HDMI Audio not working with Raspberry 3 B and Raspbian Buster

Volume control says "No volume control on this device" When trying to force output to 3.5 or HDMI in raspi-config, it fails with error "There was an error running option..." When running update in ...
1
vote
1answer
43 views

Pi 4 Raspbian 64bit, Wifi Only failing when using 4k 60hz (hdmi-01)

Hello enabling TV the full HDMI option to allow 4K 60 hz, the Raspberry Pi 4 stops connecting to Wifi and after boot the connection is bugging. Further my wireless keyboard and mouse are connecting ...
2
votes
1answer
97 views

Can't Open folder

I use rasp pi 4 as same as I did every day but today I can't open my folder when I try to open it, It'll open for 1 sec and then refresh and close itself and I try another folder but it happens again ...
1
vote
0answers
32 views

Shut off all USB ports

Is there a command that shuts off power to both USB 2.0 ports on the Pi 4? Bonus points if the command does not disable the USB 3.0 or Ethernet.
0
votes
0answers
13 views

Can't find my android phone via bluetoothctl scan on

I am currently working on a project that fetches the RSSI of my Samsung Galaxy S8 phone via bluetooth on a Raspberry Pi Zero W. I am running Raspbian and have successfully found other devices via ...
2
votes
0answers
24 views

Turning on/off specific HDMI port on Pi 4

According to the docs, vcgencmd now can specify which hdmi port as a second argument for raspberry pi 4, so I did sudo apt update then sudo apt upgrade but vcgencmd display_power 0 7 returns error=2 ...
0
votes
0answers
19 views

Unknown host QEMU_IFLA type: 50 intalling python on docker

I'm trying to create a docker image to compile python libraries for arm on a x86 instance. This is the process I'm following: 1) Install quemu: sudo apt-get install qemu qemu-user-static qemu-user ...
0
votes
0answers
18 views

Hostapd + FreeRADIUS

I am trying to configure hostapd on a raspberry pi model 3. I'm trying to use an external FreeRADIUS server. I can start hostapd without an error. However, when I try to connect to the SSID using ...
0
votes
0answers
35 views

pulseaudio server RP3 can't play audio from network client and local client at the same time

I have a Raspberry Pi 3 B connected to my speakers through a usb soundinterface. It's also connected via usb midi to a masterkeyboard which I use to play piano and doesn't have it's own speakers. On ...
0
votes
1answer
25 views

Deactivating nginx Service

We are trying to set up cncjs on a pi that had previously used as a robo pi and ran nginx. We tried "sudo /etc/init.d/nginx stop" but this did not work. We were then advised to use “service nginx stop”...
3
votes
1answer
54 views

Vintage terminal as RPi console

I want to connect a vintage 70s era terminal with a Raspberry Pi. The terminal uses a DB-25 connector and features hardware flow control (RTS/CTS/DTR etc). What would be the recommended way to hook it ...
1
vote
0answers
39 views

Rpi4B buster SPI CAN Bus Interface Problem

I'm using PI4 OS Buster. I want to connect 2 canbus interfaces so I will be able to read both of them at the same time. this is the connections I have made GPIO CAN HEADR ...
-1
votes
3answers
50 views

Can't find Raspberry PI IP

I bought Raspberry PI 4B few days ago. I downloaded Raspbian buster lite and placed it on an SD-card, placed ssh with no extension so that I can access it thorugh ssh. I put the prepared sdcard into ...
0
votes
1answer
55 views

Raspberry Pi 4 - Adafruit MAX98357 - No Sound from speaker

We are following this: https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp/overview tutorial to setup our Raspberry Pi 4 with an Adafruit MAX98357 I2S Class-D Mono Amp to a speaker (4 ...
1
vote
3answers
174 views

Temperature question

i'm planning to buy an Raspberry Pi 4 Model B. Short time after release of the Pi 4 many people have complained about heat problems (not only at 100% CPU usage, but in idle). My question is now, did ...
-2
votes
0answers
15 views

How can I use my RP 4 with Raspbian as a media server for local and remote access?

How can I use my RP 4 with Raspbian as a media server for local and remote access? I would like to be able to download some movies and watch them from any device in my LAN or remotely? Thanks
0
votes
0answers
46 views

Kubernetes 64 bit cluster on Raspberry Pi 4

I am trying to get Kubernetes installed (via kubeadm) on my Pi 4 cluster. I do have it running, but it is all in 32 bit mode, which is challenging since so many K8s components are 64 bit only (for ...

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