Questions tagged [pi-3b+]
Use for questions specific to the Raspberry Pi 3 Model B+
924
questions
0
votes
2answers
15 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 ...
1
vote
0answers
10 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 ...
0
votes
2answers
36 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 ...
0
votes
0answers
16 views
pip install pmdarima fails [closed]
Would anyone have any tips to try for installing the package pmdarima on a rasp pi? I have a B+ with a fresh image installed (updated with pip) and the pip install fails on python3 -m pip install ...
1
vote
1answer
33 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++ ...
0
votes
2answers
36 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 ...
0
votes
0answers
18 views
How do i add a button to the RPi Cam Web Interface [closed]
I know there is a way to add a custom button to execute Python files but I don't know how
I have tried setting up macros but they didn't work for some reason
Can anyone give me a solution or a way to ...
0
votes
0answers
20 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 ...
0
votes
0answers
17 views
How to access a ffserver stream from an external network?
I am using Gphoto2 library to get live preview from a DSLR, encoding it to a feed using FFmpeg, and am using a FFserver to create an SWF stream. The stream works perfectly on my raspberry pi and I am ...
1
vote
0answers
23 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 ...
1
vote
2answers
44 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 ...
0
votes
0answers
14 views
Raspberry Pi 3 OpenCV Compilation Error at 34%
I am trying to install OpenCV-3.1.0. I am following this tutorial: https://www.pyimagesearch.com/2015/10/26/how-to-install-opencv-3-on-raspbian-jessie/
I was on Step #4: Compile and install OpenCV ...
1
vote
3answers
40 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 ...
-1
votes
0answers
23 views
What's the upper limit on power that the 3B+ can take?
I've been looking to power my Pi using batteries, but I've had no luck so far. I used a power bank with 5V, 2.1A output but I got the "under voltage detected" error. Internet search told me ...
1
vote
1answer
49 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 ...
0
votes
1answer
133 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 ...
0
votes
1answer
33 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 ...
-1
votes
1answer
25 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 ...
-1
votes
0answers
20 views
Failed to load xtal capacitance PCF85163 RTC
I am connecting PCF85163 to raspberry pi.
I added dtoverlay=rtc-i2c,pcf8523 to /boot/config.txt
I am not sure overlay of PCF8523 will work with PCF85163. Output of i2cdetect -y 1 :-
So the RTC is ...
0
votes
0answers
19 views
HTTPS bandwidth bottleneck?
I'm using my Raspberry Pi 3 as an HTTPS server at home.
When downloading a large file via HTTPS over the LAN, transfer speed tops out at 11MBps (Megabytes per second).
The USB hard drive with the file ...
0
votes
0answers
47 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), ...
3
votes
1answer
69 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 ...
2
votes
0answers
69 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 ...
-1
votes
1answer
30 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), ...
6
votes
5answers
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 ...
2
votes
1answer
235 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-...
2
votes
1answer
127 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 :
...
1
vote
0answers
19 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 ...
0
votes
1answer
57 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/...
0
votes
0answers
38 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?
2
votes
2answers
75 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) ...
0
votes
0answers
64 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 ...
0
votes
0answers
46 views
Raspberry Pi 3B: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
I have a Raspberry Pi 3B, a 32GB SanDisk Extreme 32GB microSD A1 U3 V30 UHS-I bought from a SanDisk- licensed distributor. I've loaded Raspbian 2020-05-27-raspios-buster-full-armhf.img onto it. I went ...
0
votes
0answers
14 views
splash screen 10-20sec when system is booting
Any body can help me about splash screen in Raspberry pi 3 B+
I want to see my splash screen 10-20sec when system is booting.
0
votes
0answers
42 views
Constant noise while recording with Zoom H1 through USB
I'm trying to build up a recording station using a Raspberry pi 3B. I solderet four mics (two per channel) to a stereo jack and plugged it into the "external mic" audio input of the Zoom H1. ...
0
votes
1answer
60 views
Can we use RPi as main router which directly connect to ISP provided broadband cable to access internet?
Im beginner to RPi and networking as well so i have very basic question for start. i am trying to build a internet wifi router using RPi3 with the help of material available on internet. But i can ...
1
vote
1answer
70 views
Connecting 12V LED to Raspberry Pi GPIO (3.3V)
Currently I am working on RPI GPIO with a breadboard, some LED's and buttons. My next step is to add a bigger button and LED to de GPIO.
I would like to connect an Eaton 216557 LED-module to the GPIO ...
1
vote
1answer
42 views
Setting static IP for eth0 without router or dhcp
I have a Sungrow inverter I'd like to connect to. The inverter only has the option to change the ip and subnet (192.168.1.239). My RPi (Stretch) is physically connected to the inverter and I have set ...
2
votes
0answers
45 views
Stream from USB webcam to rpi3+ hdmi screen
I'm looking for something I think should be simple, but haven't been able to find any resource that shows how to do it.
I have a USB webcam attached to my PI 3+. I also have a monitor attached to the ...
1
vote
1answer
28 views
Application option vanished from menu
I just installed kali linux tools and menu with katoolin , the i went to check that tools got install or not in applications , but there was no applications option that just vanished ! All the ...
-1
votes
1answer
33 views
A very dim red light and no green light at all
Yesterday when I tried to boot my Pi 3b+ like the usual, it's red LED lit up very faintly and it's green LED showed no activity, so I switched off the power supply and switched it back on again. This ...
0
votes
0answers
39 views
screen and serial UART connection gibberish
I'm connecting my iMac (10.14.16) to my RPi 3b+ (Ubuntu 18.04.5 LTS ubuntu ttyS0, uname -a = Linux ubuntu 4.15.0-1067-raspi2 #71-Ubuntu SMP PREEMPT Fri Jul 10 01:36:10 UTC 2020 aarch64 aarch64 aarch64 ...
0
votes
0answers
19 views
elecrow sensors on i2c serial line
I have elecrow's sensors like this one that I want connect to i2c hub and use it based on the address.
first I'm trying to set my pi 3b+ to recognize at least one of them connected directly.
I'm on ...
0
votes
1answer
49 views
Raspberry Pi 3B fell to the ground, “4R7” box looks busted. Is dead?
I was toying around with the Pi, left it in a place where I should have not put it, and it fell to the ground. I picked it up again and noticed one of the small "4R7" labeled boxes was kind ...
2
votes
1answer
29 views
Control Raspberry Pi depending on Wifi-Users
I hope this the right place to ask this.
I'm currently working on the following project:
I'm creating a "digital dashboard", consisting of a tv and a Raspberry Pi 3B+. The tv just shows ...
0
votes
1answer
17 views
Network is down with eth0:0 over direct connection to PC
I have headless rpi3.
I have problem when I connect RPi ethernet directly to PC. Network is going down after a while.
My /etc/network/interfaces:
auto lo
iface lo inet loopback
auto eth0
allow-...
1
vote
1answer
87 views
Connecting an Arduino Nano to a Raspberry Pi using Serial Cable on an a Pi 3B+ or Zero W
I wanted to connect an Arduino Nano to either my Pi 3B+ or my Zero W preferably my Zero. When I connected my Nano to my Pi Zero and ran a simple script with the python 3 serial library, it didn't work....
0
votes
1answer
86 views
Updating from such a repository can't be done securely (Raspberry pi)
I'm running a 3B+ with Raspbian and I have a problem updating my raspberry pi 3b+
pi@server:~ $ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux&...
0
votes
0answers
37 views
Can the same SD card be used for Raspberry Pi Zero and Raspberry Pi 3A+ that is to be accessed wirelessly (SSH & wpa_supplicant)?
I wanted to use an older Raspbian 9 (Stretch) version of 2017/2018 because I wanted to use the "perf" tool which is not available for the current version.
But the previous version was not ...
0
votes
0answers
15 views
Having Trouble Pinging the Raspberry Pi 3B+ [duplicate]
I am unable to ping my Raspberry pi with the “.local suffix” yet it responds without the suffix. I have included some of the messages it is sending me when it boots below and included what I learned ...
