Questions tagged [pi-3b+]

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

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OS image with ssh enabled

My Raspberry Pi appears to boot but there is no HDMI output. I’ve tried various troubleshooting steps but with no success. Before I go down the route of buying another Pi I was wondering if there’s an ...
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0 votes
0 answers
35 views

Raspberry Pi Voice Hat Costom Setup

i have the raspberry pi aiy kit as described with: https://aiyprojects.withgoogle.com/voice-v1/ i would like to use the voice hat by itself without the google ecosystem, but i am not able to find any ...
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  • 173
0 votes
1 answer
59 views

Problem with package dependencies

So, I wanted to restore default settings for Raspberry Pi OS. I couldn't connect to the Internet because I changed some stupid keyboard setting on accident. So I jumped on Ubuntu MATE (with my other ...
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0 votes
1 answer
100 views

Access website with port in access point

Here's my "starting position": I have a Raspberry Pi 3b+, which is already configured, and I wanted to convert it into an Access Point. I followed this tutorial: https://pimylifeup.com/...
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1 vote
1 answer
169 views

Permission denied - Scheduling Witty Pi script

I am trying to create a new schedule for WittyPi (On/off scheduling of RaspberryPi). In the manual it seemed really easy (http://www.uugear.com/doc/WittyPi3_UserManual.pdf) but I fear I messed up ...
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1 vote
2 answers
372 views

messed up autostart, stuck booting into openbox. Help?

I was trying to autoboot fullscreen into chromium and I improperly edited /etc/xdg/lxsession/LXDE-pi/autostart with @chromium-browser --start-fullscreen https://{url}.com/ Now my pi boots into a black ...
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  • 91
-1 votes
1 answer
131 views

Vivaldi fails to load on MATE 20.04

I installed the armhf .deb package on Ubuntu MATE 20.04 Focal Fossa. I tried to run it from the icon in the Menu and it didn't work. So I tried to run from Terminal to see what the issue was. I ran it ...
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0 votes
2 answers
315 views

Make Raspberrypi boot from USB first

I have RaspberryPi 3B+. I read that there is a way to make my raspberry boot from USB by changing config.txt that will change the OTP. Is there a way to make my raspberry to boot from USB and only if ...
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0 answers
123 views

Deconfigured locales for libc6 - help!

So, I was trying to install firefox 81 on Ubuntu MATE 20.04. When I was trying to, it was saying libc6 needed 2.32 but I had 2.31 installed. So I decided to look up where 2.32 was an attempt to ...
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1 vote
0 answers
25 views

Network authentification for Raspberry 3b+ [closed]

I am a beginner with raspberries and I wanted to modify the hotspot of the raspberry. I would like that anyone could enter the hotspot with a password, but in order to really use the functionalities ...
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3 votes
2 answers
4k views

How to install the latest version of neovim?

The latest stable version of Neovim is 0.4.4. What's the easiest way to install that version of Neovim? Snap, ppa? I've tried building from source but I don't know why make CMAKE_BUILD_TYPE=...
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4 answers
567 views

Migrating From 3B+ to 4B. Easy Solution than reinstalling everything

I am using a lent 3B+ and now I will buy my own 4B. I have PMS, Pi-Hole, and Samba Server. I don't want to reinstall and re-configure everything again, is there an easy alternative?
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1 vote
0 answers
57 views

Can iptables be used to monitor a specific host and port without being a gateway or access point?

I have a Pi 3B+ that I want to use to monitor traffic forwarded from the router to another host (and a specific port) on the network. I am currently using the ethernet interface on the Pi to connect ...
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1 vote
0 answers
606 views

Connect LTE modem to RPi with systemd-networkd networking

I have a rpi3b+ running latest os as headless with everything up to date and I use systemd-networkd for networking on it. I'm trying to connect a LTE usb modem to it for wan access. For that I use ...
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1 vote
1 answer
957 views

Text editor for Raspbian Lite

I am using the Raspbian Lite image for the first time and realize there isn't any text editor. I am also using SSH to bring up the remote Raspberry Pi terminal on a LAN from a Windows 10 laptop. How ...
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  • 205
0 votes
1 answer
102 views

Expanding boot partition for Ubuntu MATE [closed]

How do I expand the /boot_ub (Ubuntu MATE) partition? I want to upgrade to 20.04 to get some support for MATE but I can't upgrade because the partition is almost full. I tried to remove old kernel ...
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0 votes
1 answer
117 views

RetroPie NOOBS SD card files [closed]

A while ago, I got a Pi with an SD card that was preloaded with noobs and RetroPie from Vilros. I've formatted the card multiple times since then and I am wondering where I can get the files again ...
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2 votes
2 answers
99 views

Upon shutdown of the pi, don't turn off the display until the very last moment?

I notice that a Pi 3B+ with the offcial touchscreen display will black/power off the display the instant that a shutdown command is issued, but it appears the Pi is still busy doing some things (what?)...
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1 vote
0 answers
26 views

Cannot change individiual core frequency on Raspberry with cpufreq-set

I used to use cpufreq-set to change the cores' frequency individually on my RPi 3B+, but I noticed that recently I cannot do it anymore. The effect of: sudo cpufreq-set -c 2 -f 1400000 is the change ...
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0 votes
0 answers
1k views

Can you setup both Pi-Hole and PfSense on one Raspberry Pi?

I am using a Raspberry Pi 3B+ and I would like to setup PfSense and Pi-Hole on the same device. Is that possible? Any guidelines would be appreciated.
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0 votes
0 answers
48 views

Optimize C code for ARM Cortex A53 (using RPi 3B+ for debugging)?

I need to debug (and possibly verify, profile and optimize) some audio algorithms for Arm Cortex A53. The algorithms take input from file as PCM samples, and also drop the output the same way, as PCM ...
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  • 123
1 vote
1 answer
695 views

Can I put the SD card from my Pi3 into a new Pi4?

I have a Pi 3B+ from some years ago, and recently (2 days ago) I completely formatted it and installed new version of RaspberryPi OS, I was using Piwigo to have a family photo gallery but it is giving ...
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1 vote
0 answers
45 views

Reliable JTAG debugging setup for R Pi 3B+? [closed]

I have recently purchased a RPi 3B+ board as I need to debug a bunch of code on Arm Cortex A53. It is essential to be able to step through the code, insert breakpoints, read registers, memory, etc, ...
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  • 123
0 votes
1 answer
2k views

Failed to start Load Kernel Modules on boot

I have problems starting my raspberry running raspian. I get a [ 55.174742484] systemd[1]: Failed to insert module 'ipv6' [FAILED] Failed to start Load Kernel Modules. Sooo little bit of ...
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  • 111
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0 answers
26 views

Sound not working properly or consistent

I have a Pi 3b+ and having issues with sound. I have tried raspi-config as well as altering the config.txt for HDMI2. First I was getting sound when playing file throught VLC using headphone jack but ...
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  • 1
0 votes
2 answers
675 views

How to connect Rasberry Pi 3 to wireless keyboard on 1st installation [duplicate]

Sorry, not sure if this is the right forum for the question. I have just purchased Rasberry Pi 3 and a wireless keyboard. How do I connect the keyboard to pi during first boot/installation of pi ...
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1 vote
0 answers
62 views

Problems with Huawei me909u521 modem in Raspberry Pi 3 b+

I have the Huawei me909u521 modem attached to RPi 3 b+ via sixfab LTE hat (connected by GPIO). The Rpi is detecting the modem: pi@raspberrypi:~$ lsusb Bus 001 Device 004: ID 12d1:1573 Huawei ...
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0 votes
2 answers
940 views

rc.local not able to execute python script with network code

(Disclaimer, this is a crosspost from my Unix & Linux Overflow question, however I got no answers) To introduce my problem, I'm running Raspbian Stretch on a RPi 3 model B+, and I have two scripts ...
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1 vote
1 answer
757 views

How to write a C++ wireless communication to control my raspberry pi over network

I have a raspberry pi and I want to convert it into a RC car which I will control through my PC. I know C++ programming and I intend to use that to write the software stack. I want to create a C++ ...
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  • 21
0 votes
2 answers
110 views

Is there any battery for Rpi that can be charged and used at the same time? [closed]

I'm making a security camera using Raspberry Pi 3B+ . I want suitable battery to power my rpi. Is there any suitable battery pack that can power Rpi at the same time recharge the battery? I also found ...
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1 vote
0 answers
358 views

pip install fbprophet

Can the facebook time series algorithm called prophet be installed on a rasp pi? It requires pystan (I think its Cython) and my B+ pi upgraded to Buster fails on the install with pip Im also noticing ...
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  • 205
1 vote
0 answers
183 views

DS18B20 stopped recently

I have read a few posts here on my issue, notably DS18B20 not detected by Raspberry Pi, but unfortunately none of the suggestions worked for my issue. I am seeking advice on additional troubleshooting ...
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3 votes
5 answers
3k views

Turn off external LEDs on Raspberry Pi 3

I see there are quite a few posts about this already but none seem to work for me. I am running a pihole server on my RPi 3 and I would like to turn off the external power and LAN LEDs (green and ...
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  • 139
1 vote
3 answers
52 views

power supply specification

are there any public requirements (which I have not found) specifing power supply ramps / gradients e.g. is there a spec like from 0 to 5V in 5ms or faster also when turning of, is there any ...
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  • 121
1 vote
1 answer
422 views

Build MariaDB 10.5 on Raspberry Pi 3B Unable to find a source package for mariadb-server

I am wanting to build MariaDB 10.5.5 on my Raspberry Pi 3B (Kernel version 5.4.65-v7+) since it has some nice features I want to play with. The first step involves setting up the build environment ...
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16 votes
3 answers
31k views

How to emulate Raspberry Pi in QEMU?

A few years ago, people were saying they were able to emulate a Raspberry Pi 2 or 3 in QEMU. However as of late 2020, I am unable to do so. Can anyone let me know what the correct command line ...
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  • 329
0 votes
1 answer
89 views

why frequency output is not constant?

[![I uploaded piscope image and same time output image also for better understanding of issues][1]][1]I am using sample code of Pypi from "http://abyz.co.uk/rpi/pigpio/python.html" to detect ...
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  • 59
-1 votes
1 answer
55 views

Not able to connect my rpi to the WiFi

Hello rpi enthusiasts, I have my rpi connected to the WiFi as well as the ethernet cable connected to it, but I cannot reach any websites. I am trying to clone a GitHub repository. Has anyone ever had ...
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  • 1
1 vote
3 answers
2k views

How to configure a non-regular display (1920x480 CET) for Pi3 and Pi4 running Raspbian buster?

I have weird display of resolution 1920x480. I have hardwares both raspberry Pi3 B+ and Pi4, both running raspbain buster latest stable release. When connected to the display (both the Pi3 and Pi4), ...
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3 votes
1 answer
139 views

Can RPi 4 deliver more amps on the 5 volt rail than RPi 3 powered over PoE?

I have a setup using a Raspberry Pi 3B. I use the PoE hat on top and I power the entire setup over PoE from a Unifi switch. The setup has quite a lot of peripherals that need power and I use the 5 ...
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2 votes
0 answers
376 views

Poor performance with LXD/LXC. Extremely high CPU steal in the containers

I've got a pi 3 B+ running Raspbian 10. I installed LXD using a snap package. There's two LXC containers running on my machine. One is an nginx reverse proxy and the other is running pihole. Both ...
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  • 121
-1 votes
1 answer
187 views

Swapping SD cards between RPi4 and RPi3b

I have an RPi3b that is used as a NAS and a RPi4 that is used as a sensor monitor. I want to use the RPi4 as a NAS due to its better performance. Considering both systems are on Raspbian Buster (10), ...
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  • 13
6 votes
5 answers
2k views

Is there a way to remove old files without relying on internet time service?

I have a Raspberry Pi that is acting as a sensor which I am sending out to various customers. The sensor is recording approximately 1 GB every 2-3 days, so I would like to have a way to remove old ...
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2 votes
1 answer
3k views

Enabling of I2C-0 via "dtparam=i2c_vc=on" on Pi 3B+ causes "I2C-10" & "I2C-11" to appear and disables GPIO 10 GPIO 11

For reference: I am using the latest release Pi OS Lite, Aug 2020 version. I am developing an application using Pi4J. I am referring to pins via this Pinout: https://pi4j.com/1.2/pins/model-3b-plus-...
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2 votes
1 answer
1k views

BLE connection timeout on Pi3 B+

With a Pi 3B and a Pi Zero I'm able to connect to a BLE device without problem, but if I try to connect to the same BLE device with a Pi 3B+ it connect and disconnect after 1s with a timeout error : ...
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  • 161
1 vote
0 answers
45 views

Access Point and NodeJS frontend

I have set up a wireless access point with my RPi 3 B+ as per the official instructions on the RapberryPi website, and that works well. I can connect to the internet via my RPi access point. I would ...
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  • 111
0 votes
1 answer
9k views

systemd error: (Loaded: bad-setting)

I'm using a Raspberry Pi 3B+ with Raspbian GNU/Linux 10 (buster) currently installed as my OS. I'm having some issues in starting a systemd service that will rerun a python script whenever it stops/...
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0 votes
0 answers
346 views

Disable HDMI port on Ubuntu 18.04

I'm running Ubuntu 18.04 on an RPI 3 B+, and I would like to disable HDMI to conserve power. tvservice seems to be missing, is there any way to do this if I'm not running raspbian?
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  • 119
2 votes
2 answers
229 views

Unable to access Pi over ethernet, but over Wifi-works

I've had my Raspberry pi 3 for a couple of years and everything has worked fine. A week ago I bought a new router + AP and the Pi could connect (through ethernet to my router as well as the Wifi) ...
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  • 141
0 votes
0 answers
148 views

ADC on RPi always produces same value

https://stackoverflow.com/q/63606134/14167364 Please follow the link for my original post was in python forum. I have a moisture sensor and it uses analog so I purchased MCP3008 ADC. I have installed ...
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