Questions tagged [pi-3b+]

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

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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 ...
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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 ...
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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 ...
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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 ...
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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++ ...
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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 ...
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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 ...
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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 ...
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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 ...
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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
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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 ...
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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 ...
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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 ...
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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
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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), ...
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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 ...
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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 ...
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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), ...
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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
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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-...
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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 : ...
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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 ...
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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/...
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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?
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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) ...
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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 ...
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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 ...
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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.
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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. ...
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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 ...
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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
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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
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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
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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 ...
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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 ...
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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 ...
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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
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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
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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
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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
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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
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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&...
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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 ...
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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 ...

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