Questions tagged [pi-3b+]

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

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54 views

Dropped wifi packets from Pi Zero W to Pi 3B+

We're trying to build a system where a master Pi 3B+ controls a dozen (or more) Pi Zero W clients - all running the latest raspbian (as of 18:00 EDT today) - in an isolated WiFi island (no ...
2
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0answers
60 views

Image rollback using Raspberry Pi Bootloader

I'm using Yocto framework based RPi build and have created My SD card partition as follows, ======================== SD card with 3 parts ======================== | 68MB(bootloader) | 4GB(...
2
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1answer
870 views

Raspberry Pi 3b+ do not detect DS18b20 on 1Wire

Problem: The new raspbian kernel does not detect the DS18b20 sensor over the 1wire bus. This is due to the Device Tree that was added to Kernel 3.18.8 What hardware used: Raspberry Pi 3b+ Kernel: 4....
2
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2answers
449 views

I'm trying to run a python script at boot but keep getting “socket.error: [Errno 111] Connection refused” error

I've bought my first Raspberry Pi 3B+ last week and started working on my project but I seem to be stuck at this point. I've looked through a hundred different posts but none of the solutions seem to ...
2
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1answer
4k views

AVAHI Daemon doesn't work on RPI

I have installed lighttpd on my RPI 3 : sudo apt-get install lighttpd I have managed to access the web server from /home/pi/www And it works, I can find my Hello World when I entered 192.168.2.31 in ...
2
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1answer
2k views

Correct Arch Installation procedure

What is the correct procedure to install Arch on raspberry pi 3 b+?? I've followed the instructions on this page: Arch Wiki substituting ArchLinuxARM-rpi-2-latest.tar.gz with ArchLinuxARM-rpi-3-...
2
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1answer
2k views

Virtual Machine for Raspberry Pi 3

I have found Exagear Desktop. It would work perfectly except for the fact that the RPI3 version is $30. Are there any other virtual machine software that would work on the Raspberry Pi that are free?
2
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0answers
83 views

How can I force the Pi to wake a monitor

This question is not specifically a Pi question, but about how to FORCE the Pi hdmi to wake my monitor from sleep, which seems to be a seems to be specific to the Pi hardware, although it may be a ...
2
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0answers
2k views

How to run multiprocessing in python? [closed]

I am developing a system where I am avoiding an accident by slowing down the motor speed using distance provided by ultrasonic sensor. Also, if accident happens, it must be sense through sw420 and ...
2
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1answer
294 views

Why can I no longer find gnome-mahjongg with apt?

I have installed the new release of Stretch for the Pi 3 B+. Apt goes to the Inrelease on the mirror and it does not seem to have the games? I like the Gnome-mahjongg package, but apt-cache search ...
2
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1answer
4k views

3B+ fails to boot Ubuntu mate

I have the problem that the bootloader and kernel are too old in the mate image to run the on the new hardware. Raspian works fine with a noobs install. I tried the advice in the thread here https:...
1
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1answer
161 views

How do I start and stop the on board wireless access point?

I would like to have my wireless access point available at particular periods of the day and not at others. I have a RPi3+ running default Raspbian and followed https://www.raspberrypi.org/...
1
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3answers
44 views

RaspberryPi turns on but wont start

So I come home and the power strip in which I left the RaspberryPi has tripped and it was off. I restart it, but I notice that the RaspberryPi wasn't giving any output when I plugged the monitor in. I ...
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4answers
73 views

Is it safe to reuse a crashed SD card?

I have the following set-up: RPi 3 8GB MLC microSD partition 1: root and the rest (read-only) partition 2: /var filesystem (rw) continuous writes to /var/logs system will experience unexpected sudden ...
1
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1answer
198 views

Ethernet not found while ethernet cable is pluggedd in

I am running AGL (more about it here) image on Raspberry PI 3. I want to send application files from my laptop (where i build it and which has stable wi-fi connection) to the raspberry using scp. What ...
1
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2answers
74 views

How to send email from Pi using python without smtplib?

I am new in Raspberry Pi and I am trying to send mails without using SMTP. I had used SMTP before and it worked perfectly fine. But recently the same code is not working, though it compiles without ...
1
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1answer
528 views

How to connect two BME280 sensors via I2C to a Raspberry Pi 3B+

I have a Raspberry Pi 3B+ and I bought two BME280 sensors (specifically these) and I would like to connect them via I2C. I read that you can do software multiplexing but all the information I am ...
1
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2answers
74 views

Pi Remains Running When External (Powered) HD is connected

I have a Pi3B+. Attached is a (powered) Western Digital My Book external hard drive. When I accidentally unplugged the power to the Pi, it kept running, happy as can be with the only other energy ...
1
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2answers
543 views

3B+ “Internal error: Oops: 17 [#1] SMP ARM” after system wide grep pattern matching

friendly forum! I had just setup my 3B+ with ssh certificates and things(booting from a Sandisk Cruze 16GB, no other device connected, wifi internet) and was tinkering with the motd when I ran a ...
1
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1answer
120 views

How to cut the power on power pin 1 programmatically?

Is there a way to cut the power on power pin 1 on Raspberry Pi 3B+, using a command or force this on reboot?
1
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2answers
192 views

Roughly how much users could handle a RaspBerry Pi3b+ as server for standard Wordpress personal blog?

I want to try to use my raspberry to host a standard wordpress personal blog. Yes I know this could sound a crazy idea but I'm wondering roughly what range of users could handle assuming a standard ...
1
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1answer
46 views

How to convert a Layer 3 VPN to a Layer 2 VPN?

I have been back and forth with some users here about creating a VPN using my Raspberry Pi 3 as a hotspot (OpenVPN client) but being able to bridge it to my other Rasperry Pi 3 at home (OpenVPN server)...
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3answers
74 views

Is this power supply safe to use?

I've never used Raspberry Pi before. I've got myself Model B but it didn't come with its power supply. On their official website I've got this info: You need a good-quality power supply that can ...
1
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2answers
241 views

Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img

Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img. See screenshot below. I'm not sure if the side of the ACT light is red and if so if that's also a ...
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6answers
9k views

WiFi won't start

I have a new Pi 3 B+ and am running openplotter version of NOOBS. When I boot, WiFi doesn't show on the top right of the home screen. When I run raspi-config for Network Options and WiFi, I get '...
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2answers
340 views

How did I manage to fry my pi 3+B? Can I recover it?

I'm new to Raspberry pi and electronics in general. All worked fine (a node webserver, reading a DHT22 sensor) then I tried this tutorial - https://www.raspberrypi.org/magpi/breadboard-tutorial/. It ...
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5answers
3k views

Raspberry Pi 3 B+ Low voltage warning

I have 10+ various older model RPis running already. I bought 2 new RPi 3 B+ starter packs (with original power supply!). When I insert an existing SD card it shows a low voltage warning in the top ...
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2answers
5k views

Installing PyQt5 on raspberry: unable to imoprt PyQt5.sip

Trying to install PyQt5 on Raspberry Pi 3B, I followed instructions to first download, extract and install SIP and then download, extract and install PyQt5. Python 2.7 and 3.7 are both installed on ...
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3answers
8k views

RetroPie fails to boot on Raspberry Pi 3 Model B+ with rainbow screen and flashing red led

I downloaded the latest version of RetroPie (v4.3) to a formatted SanDisk 16GB SD card. When I try to boot RetroPie on a brand new Raspberry Pi 3 Model B+, it gets stuck on a rainbow screen. I've ...
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1answer
30 views

Is it safe to use 3V3 on raspberry pi 3B+ to control a 3V DC motor?

I want to connect power to a 3V DC motor straight from 3v3 GPIO. Is it safe or will I brick my Pi 3B+ ?
1
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1answer
51 views

SIM900A with Raspberry Pi 3 Weird Error and Behaviour

I am working on integrating Sim900a on Rpi3B. As usual connecting to TX->Rx, Rx->Tx (GPIO14, GPIO15 in Rpi) - following diagram from this link: How do I connect GSM SIM 900A to a Raspberry Pi 3? When ...
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2answers
53 views

Powering the Raspberry 3 B+ with PSU

I have a PSU from Amazon that provides 5V and I used my trusty multimeter to adjust the voltage to exactly 5.0V. I used it previously to run some silent fans, but I don't have any use for that anymore ...
1
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1answer
214 views

Low wifi speed even with 5Ghz wifi adapter

My internet download speed from my D-Link wifi router is 24 M bits/s From ethernet the download speed is 50 Mbits/s I am using Tp-link AC600 Archer T2U Plus wifi adapter with Rapberry pi 3B+ I ...
1
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1answer
50 views

When I make a clone of my SD, the resulting image has ethernet problems

First of all, I'm working with Ubuntu Server 18.04, on a Raspberry Pi 3b+. I'm running a server with Nodejs and MongoDB. Everything works perfect. The problem comes when I want to clone the SD into ...
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1answer
61 views

Why can't I hear the sounds when making a call?

I was able to make calls using my RPI 3 model B+, Huawei E153 GSM Modem, and minicom. I can see that the cellphone I'm calling was able to answer my call (from my Pi). I plugged in my headphones to ...
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2answers
59 views

Relay modules: Can I switch AC in one and DC in another?

I would like to control both 120VAC and 24VDC from my RPi 3B+. To make this easy, I'm looking at one of the various 3ch or 4ch relay modules for an RPi 3B+, like this or this. I'm familiar with using ...
1
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1answer
118 views

Is it possible to use the pi as a wireless usb passthrough to my windows computer?

I have just recently had a raspberry pi 3 model B+ and thought of a cool project. Being a total beginner at this area, i do not know if it is even possible. My desktop pc is in a very pecular ...
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2answers
423 views

Imaging Raspberry PI via PXE

Apologies if this has been answered, tried searching but didn't find exactly what I was looking for. I have 5-10 Raspberry PI's coming in at a time that I need to load Rasbian (jessie) on. Currently I ...
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3answers
288 views

can i power 2 raspberry pi 3 B+ using a USB hub?

i like to power 2 Rsp3b+ via a Power USB hub, i have a usb power hub that is 12v @ 2A and im worrying it will blow or burn the ic's of the pi's due to over voltage, would this be true? I like to add ...
1
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1answer
135 views

RPI Fan Startup and Temp Control

Info: I am running a rpi 3b+, with Recommended Raspbian installed, and also with a Noctura NF-A4x10 5V, mounted on the lid, with vent holes, of the official rpi case. I will eventually turn this ...
1
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1answer
94 views

Handle data while filming with rPI [closed]

We will buy the BMPCC4k (This means 500GB/hour on a ssd), as we are a low/no-budget production, we can't have someone handling data. I had the idea to use a rPI3+ to use for this. But I'm not sure if ...
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2answers
116 views

how to install several different Operating Systems on pi 3 b+ sd card and how to access them

I wish to install several different Op Systems on one micro sd card for a pi 3b+. I use octopi for running a 3d printer and interested in dietpi and more to experiment with. Will be looking into an ...
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2answers
251 views

Rpi3 log file opened and closed with python but corrupted on power loss - albeit file was closed

I have to ensure that every minute I open, write, and close a log file. It must be closed as we trigger power loss randomly on the Rpi3. I known it is bad and I also know that you want to use ...
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1answer
9k views

How to control screensaver in Raspbian Stretch?

Brand-new Rpi3B+ with a brand-new download of Stretch. Made sure everything is up to date: sudo apt-get update && sudo apt-get upgrade -y sudo apt-get autoremove -y sudo apt-get dist-upgrade ...
1
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2answers
153 views

Run script on boot.

I want to know my Public IP address of PI using script and script should be start running automatically when my raspberry pi boot and Store output in some file, so that i can use later on. Actually, ...
1
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1answer
36 views

Consistent filesystem corrruption

It seems that recently my SSD began to get corrupted almost every time I shut my Pi 3B+ down, and on boot I get: [ 4.503731] sda: sda1 sda2 [ 4.511049] sd 0:0:0:0: [sda] Attached SCSI disk [ ...
1
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1answer
54 views

How to turn off USB chip permanently?

I am seeking ways to reduce power consumption on my raspberry pi 3B+. I've read that one of the most efficient ways is to turn off the USB chip. This link shows how to do so via the toggle commands. ...
1
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1answer
127 views

What problem does dphys-swapfile solve?

I have a RaspberryPi 3B rev 1.2. It has 1 GB of RAM. When I run my C++ compiler at -j 2 or above I catch intermittent Out Of Memory (OOM) kills. Sometimes the compiler is killed, other times other ...
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1answer
126 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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1answer
132 views

howto config network interfaces in Raspbian after config files change

I cannot find a way to start network interfaces with proper config after I changed config files (eg dhcpcd.conf). The only way I found to take the new config into account is to reboot. There must be ...

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