Questions tagged [pi-3b+]

Use for questions specific to the Raspberry Pi 3 Model B+

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ADXL345 shows non-zero acceleration value when idle

I am using an ADXL345 accelerometer connected to a Raspberry Pi 3B+.I have written a python code to check the acceleration value. However, the accelerometer always shows a non-zero value for the x and ...
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65 views

Can't SSH into raspberry pi after being inactive for a while

Alright, so, I've recently set up the Raspbian OS on the raspberry pi 3b, and I can ssh into it normally. Although, if I leave the pi inactive for a while and don't do anything with it, I'm unable to ...
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3 12V DC motors on raspberry pi with L298N

Completely new to this stuff. For context, I am trying to connect 3 DC motors that probably are 12v. I haven't bought them yet, they will definitely be more than 5v. I want to be able to control all ...
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23 views

Rpi 3B+ Clam Antivirus hanging

Whenever I launch "Clam Antivirus" in my Raspberry pi 3B+ , it starts hanging when I click any button . How to scan files without hanging ?
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Issue after a few hours of correct operations over wifi shared between an access point and a wifi client

I have a Raspberry Pi 3B+ running Raspbian 32 bit. It runs correctly as an access point and a wifi client over the integrated wifi. It does not use systemd-kerneld. I followed the different steps ...
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138 views

raspberrypi kernel: [14247.511414] mmc0: timeout waiting for hardware interrupt

Setup = Rpi > USB HUB > USB TTL adapter/cable > 2 LTE modules. Protocol = AT Commands. Problem = mmc0: timeout waiting for hardware interrupt. Question = Any investigation method and ...
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InValid CAN packets Observed RPI 3B+

RPI 3B+ connected with HAT consisting of CAN Transceiver. CAN interface is enabled and configured and link is UP. I'm using bus.send(msg) and bus.recv() functions to transmit and receive can packets. ...
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SPI Communication between Raspberry Pi and Arduino questions

Basically the title, but I have been looking into SPI as I am working on a project that basically requires a Serial connection between a Raspberry Pi (as a master) and an Arduino (slave); I intended ...
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Unable to play HD video using vlc

I buid an image for Raspberry pi 3b+ using yocto project. While building it I have used VLC instead of OMXplayer for playing videos, and enabled the hardware acceleration using --enable-omxil --...
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Building the Kernel error

I was following the steps defined here https://www.raspberrypi.com/documentation/computers/linux_kernel.html#updating-your-kernel and when executing this command, I get the next errors: pi@...
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2 answers
77 views

Component knocked off Raspberry Pi 3B+

I acquired a second hand Pi 3B+ today but unfortunately it had a loose component on the underside of the board (3 pad component beside the SD card slot) While trying to fix it with a soldering iron I ...
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raspberry pi wont boot (Act led blinking 4 times)

I have 2 raspberry`s (raspberry pi 3b+). One is working fine and well and if i want to turn on my other raspberry (with the same SD card what i used for the other) the ACT led is just blinking 4 times ...
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DS18B20 value change with its power

I bought 3 DS18B20 and I am trying to use them for my domotics. I have relilability issue depending on how I power the DS18B20. The gobal setup : 1 MeanWell DR-15-5 to power the Pi 1 Raspberry Pi 3 ...
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Building all kernel modules make the right ko file for KS8851 but not when make separately

I am trying to build the KS8851 spi module, when i use make -j4 -C linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- modules the KS8851_spi.ko and KS8851_common.ko are successfully built. But when I ...
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How can i read the actual time of the played Audio from VLC player?

i want to play a sound on my Raspberry over the VLC media player. I want to change between two songs, but dont want to restart the song from the beginning at 00:00.00. Instead i want to read the ...
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What mosfet should i use for controlling a 24V 48W RGB ledstrip with a Raspberry Pi?

I am trying to control multiple 24V RGBWW (6-vein) ledstrips with my raspberry pi 3b+. The ledstrip is 2 meter (24W p/m) long, and will be cut into 3 pieces. I want to control each piece (~67cm) ...
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Nextcloud Docker install on RPI unsuccessful

I'm trying to install NextCloud via Docker on my Raspberry Pi 4. I have one version up and running with self-signed SSL certificates, but for some reason I cannot update that one. Here the docker-...
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GPIO readout from Geiger Müller board is low when it clicks

I am using a RPI 3b and this board. I setup everything according to this guide. It's also my first RPI project so maybe I am missing something. The code I am running: import RPi.GPIO as GPIO GPIO....
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Raspberry pi 3B+ not booting using regulator

I am using a 12V 2A power adaptor** and to step down the voltage to 5V, using a voltage regulator LM2576-Adj. at the output of this regulator I do get 5.17V enough voltage which is required by ...
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Drive a 24V relay with RPI3 B+

I need the RPI3 B+ GPIO to drive a 24V relay that turns on an AC resistive load. Update:I hope the block diagram I attached earlier is now showing. part numbers listed, but the mosfet is not working ...
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How to connect Sim800c development board to raspberry pi 3

i bought this development board Professional Small Size SIM800C GSM GPRS Module Quad-band Development Board Module Suitable for Raspberry Pi (blue & silver) https://www.amazon.it/dp/B07NVZ59JS/ref=...
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Raspberry pi 5mp camera screw size

I know the holes on the pi cam is 2mm in diameter, but I just want to know what's a good size screw to mount the pi cam because I'm afraid I might crack the pi cam board. Is m2 too loose or is m2.5 ...
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1 answer
115 views

Media server without internet?

On my phone I have the Foobar2000 app which allows me to play music through media servers. On my raspberry pi I connected a USB stick and set up MiniDLNA. This works fine but I figured it requires an ...
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166 views

Two 'burnt' HDMI ports on two Raspberry Pi 3B+s one after the other

Background: I had Raspbian 10 (installed over NOOB) running on a Raspberry Pi 3B+ running: BOINC (30% CPU time and 25% CPU cores used) dump1090 Kodi Kismet since July 2020, pretty much 24/7 till ...
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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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Can i Transfer Data from one raspberry pi to another over i2c? [duplicate]

Hi, i have following Problem: I have A raspberry Pi 3B+ with a Touchscreen, which uses every Single Pin on the 40Pin GPIO header. The only thing i have is a i2c breakout on my Touchscreen. But i have ...
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SD card isn't being detected by raspberrypi 3 B+ or my laptop

Raspberrypi 3 B+ was working yesterday, had the raspbian image flashed onto it and I was able to ssh into it headless from my laptop with no major issues. However, today it didn't boot up, so I ...
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2 answers
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How can i set up my owm serial communication between two Raspberrys?

i have following Problem: I have A raspberry Pi 3B+ with a Touchscreen, which uses every Single Pin on the 40Pin GPIO header. The only thing i have is a i2c breakout on my Touchscreen. But i have the ...
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56 views

IP Cam system suggestions

Though id ask here as it seems like a pool of knowledge Im wanting to record RTSP streams on my raspberry pi possibly combining my OMV instance, not sure the best solution/setup hence the post. I want ...
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291 views

Can I upgrade my Raspberri Pi 3 Model B to a newer Raspbian version?

I have Raspian 9.13 on my Pi 3 Model B and it looks like it's "dead" (doesn't get updates anymore). Are newer versions of Raspian compatible with older Pi models? Is there a table on the ...
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220 views

Low Voltage Warning with Anker Power Supply [duplicate]

I have an Anker Atom 3 4-port power supply (https://us.anker.com/products/a2045). In the USB-C port, I've got a USB-C ub plugged in that goes to my chromecast w/ Google TV as well as a web cam for a ...
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Raspberry pi showing notification of low volatge warning

I have a 12V power supply and has used LM2575 for converting 12V to 5V for powering the raspberry pi. I check with multimeter the output after designing circuit it is 5.25V.
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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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19 views

Canon TS3100 Printer

When I run Rasbian with my Canon TS3100 printer simple scan won’t recognize my printer but if I install The latest Debian it recognizes the scanner usb and wirelessly
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327 views

Difference between vcgencmd get_camera and raspi-config nonint get_camera?

I'm trying to figure out why everytime I poweroff and back on my device I need to manually enable the camera so I ran these 2 functions to get more insight on the situation. For vcgencmd get_camera im ...
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Ivport-v2 not detecting camera on restart

I followed the guide to setting up ivport-v2 on my RPi and running sudo python2 test_ivport.py fine, if I also run sudo reboot it still works. When I run vcgencmd get_camera I get supported=1 ...
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Raspberry Camera turns off everytime I pull the plug to restart

I'm using ivport-v2 and followed the guide to get my camera running. Went in sudo raspi-config enabled I2C and Camera, then reboot and everything works fine. However, when I pull the plug on my RPi it ...
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What are the two extra components delivered with Raspberry Pi 3B+?

Inside the box of my Rapsberry Pi 3B+, I found these two little extra components. The left one looks like a heat sink, the right one resembles the WiFi antenna on the RPi Board. Is this correct? If so,...
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Camera Settings keep getting reset

Hello I'm sorry if this question will be coming off as vague because I'm extremely confused by this behavior but I'm willing to update with any details you'll enquire on. I'm using ivport-v2 and ...
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How to build custom ubuntu desktop image with required package

I need to build ubuntu desktop image with my required package, please suggest the steps required. Thanks & Regards.
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86 views

Trouble communicating between a raspberry pi 3b and Omron plc using pyModbusTCP

Ok so I am trying to communicate with an Omron plc using a raspberry pi running the latest version of raspbian (bullseye in this case). I have been trying to keep it simple, so the only thing else is ...
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1 answer
24 views

RF433 Rpi Serial cannot read signals in Python

I am running this code. import serial import time serialport = serial.Serial('/dev/serial0',baudrate=1200, timeout=3) t = "ttt" while True: serialport.flush() serialport.write(t....
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HDMI seems to be dead

We have almost 300 RPi3B+ with monitors connected via HDMI. These RPis are supplied with power via GPIO pins 2 and 4 (5V, 3A). Also from the same PSU monitors for these RPis also supplied with power (...
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-1 votes
1 answer
49 views

Unable to connect Raspberry to Wifi

I want to connect my Raspberry to Internet through Wifi, but it can't detect any Wifi. I've read that only Pi 3 and + models can do that, but mine is a Raspberry Pi 3 Model B Plus Rev (see picture). ...
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Enable i2c kernel support on ubuntu mate 18.04

I am having issues trying to enable i2c support for the raspberry pi 3B + with ubuntu mate 18.04. I need to do this in order to drive a few servos. The problem is the prompt doesn't show up to enable ...
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Rpi 3b+ No Display 7inch TFT-LCD Composite Display

I have 7 inch display which I used in my car almost 10 years back I want to use it with my Rpi3b+. I tried changing various display modes in config.txt like sdtv mode =0 and other numbers. None of ...
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1 answer
62 views

Raspberry Pi Buzzer delay

this is my first raspberry pi project and it’s for university. I have a led, a button a buzzer and a servo motor connected, they all work perfectly fine. The idea is, when the servo motor is moved, ...
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899 views

Cannot enable camera

I've been trying to enable the raspberry pi camera on my new pi 3B with no success. I've tried updating. I tried raspi-config on the commandline, enabled the camera and rebooted. These did not work. ...
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1 vote
1 answer
76 views

Stepper motor, need forward, reverse and to hold weight

I am working on a project in which i would like to lift and hold open a small wooden door at a certain time of day and then lower it again. Right now I would be happy if I could just lower it. I can ...
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32 views

Show Raspberry Pi Infos on a webpage

I want to make a control-website and show raspberry pi information on that. I heard about flask, but is that the right tool, to get the cpu temperatur for example? Or how can I do that with php?
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