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Questions tagged [pi-3b+]

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

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BLE Connect fails with page timeout

I've got a custom BLE 4.1 device and I'm trying to connect it to Raspberry PI 3 B+ using hcitool, gatttool, bluetoothctl, ..., without success. The device is an NRF BLE chip with the Nordic UART ...
PirklW's user avatar
  • 141
3 votes
0 answers
635 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 ...
eiton's user avatar
  • 131
3 votes
0 answers
1k views

Connect with VNC to RPI 3B+ via Bluetooth

I want to do VNC via Bluetooth between my Raspberry pi 3b+ and an android phone. Some forums say that bluetooth technology is so slow to connect VNC via a DUN network, but I was doing some research ...
BlueSeph's user avatar
  • 149
3 votes
0 answers
1k views

uv4l usb camera stream not working

I am using a raspberry pi 3b+, trying to make the usb camera work with uv4l streaming. These are the packages I've installed: uv4l uv4l-raspicam uv4l-raspicam-extras uv4l-server uv4l-uvc uv4l-...
kdlsw's user avatar
  • 31
3 votes
0 answers
206 views

Configure AlexaPi to use bluetooth speaker connected to my Raspberry Pi 3B+

I am trying to clone Alexa on my RaspberryPi 3B+. Following are the links which I am following. https://github.com/alexa-pi/AlexaPi https://github.com/alexa-pi/AlexaPi/wiki/Installation I have done ...
Prasanth Kumar Vinakota's user avatar
3 votes
0 answers
661 views

webcam issue after UV4L installation

I am trying to make a usb webcam work on my rpi but it drives my nuts. I have Rpi 3 model B+ Also I've downloaded the newest raspbian image (stretch with desktop and recommended software). It's ...
mr.incredible's user avatar
3 votes
0 answers
809 views

Install Windows 10 IoT on 3B+?

I bought a 3B+ a few months back and have been experimenting with it with Raspbian, but I recently discovered it is possible to run Windows 10 IoT on it and since I am mainly a C# developer, I want ...
Michael Tracy's user avatar
3 votes
0 answers
107 views

Google assistant on RaspberryPi3

I need help as I am stuck doing a project. I followed the tutorial on google developers website " https://developers.google.com/assistant/sdk/guides/library/python/extend/install-hardware" and got the ...
brizzi's user avatar
  • 31
3 votes
0 answers
199 views

Are the camera and display connectors of my 3B+ soldered the wrong way around?

I recently purchased a new 3B+ board and although the board board itself is working fine, I can't get the PiNoir camera to work. The camera works fine on an another 3B board. I tried several tricks on ...
KooDooMoo's user avatar
  • 131
3 votes
0 answers
877 views

Accelerated Numpy on Pi 3 B+

I'm looking to do some work with NumPy on my Pi 3 B+, and I'm not sure what the deal is with optimization, blas, etc. I installed libatlas using: sudo apt-get install libatlas-base-dev Following ...
SHB11's user avatar
  • 131
3 votes
1 answer
1k views

Raspberry Pi Internet Issues

On my raspberry Pi 3B, attempting to access the internet for downloads fails. Anything that uses it (chromium, apt-get, etc) does not work, giving errors such as DNS server not found, or just hanging. ...
Fuzzyzilla's user avatar
2 votes
1 answer
2k views

Specified qdisc kind is unknown when using tc netem to emulate latency on Raspbian

When I tried to emulate latency using tc. I get the following error on Raspberry Pi 3B+. sudo tc qdisc replace dev eth0 root netem delay 100ms Error: Specified qdisc kind is unknown. These are the ...
Sahan Samarakoon's user avatar
2 votes
0 answers
154 views

RPi 3B+ & Yocto & U-Boot : free UART pins to be available for a RS232/485 HAT

I have the following hardware/software setup: Sferalabs StratoPi Base (Raspberry Pi 3B+ with a HAT for RS232/485) Distro built with Yocto and meta-raspberrypi on thud branch U-Boot SysVinit I want ...
Carton_'s user avatar
  • 21
2 votes
0 answers
2k views

Postgres ERROR: SSL SYSCALL error: Connection timed out

I wanted to develop an app with Python that would run on a Raspberry and be remote controlled. This app should control (switch on and off) 2 leds based on the current day, time and the user's ...
Jiannis4's user avatar
2 votes
0 answers
93 views

How do I turn an brushless dc motor 1 cycle per second using pigpio and c++

I am using an esc and a bldc and im trying to slowly spin my bldc I can get my motor to spin with gpioServo() but when I use gpioPWM() It just continues to beep when i use gpioServo() it spins way ...
thomedy's user avatar
  • 29
2 votes
0 answers
86 views

Raspberry PI 3B+ losing connnection

I have a problem with my raspberry. I can connect to it using putty(ssh) or VNC Viewer, but after few minutes the connection drops. I still see it listed when i go to "connected devices" on ...
Albert B's user avatar
2 votes
0 answers
828 views

Wireless display with Raspberry PI 3

So, I Googled around for this, but it feels like almost all questions on the internet about this kind of thing are "how to stream from my laptop to my pi". I was wondering about the other ...
dkasipovic's user avatar
2 votes
3 answers
2k views

Raspbery Pi 3B+ - My USB ports don't work, but ethernet does

This is a pretty short question. My ethernet port works, but none of the usb ports seem to do anything when I plug anything in them. This is the case with a fresh raspi os image. How can I debug this?
S. ten Brinke's user avatar
2 votes
0 answers
561 views

My rfid-rc522 reader stops reading after some time, how can I debug it?

I'm using the reader below to read mifare cards (13.56mhz), I have an electron/node.js application for this. For some reason after an uncertain amount of time(shortest time I noticed was about 30 ...
crimson589's user avatar
2 votes
0 answers
1k 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 ...
Sloan Thrasher's user avatar
2 votes
0 answers
587 views

Raspberry Pi white screen after several days what is the problem

I have a Raspberry Pi that is connected to a touchscreen via HDMI. After several days the screen becomes white and it does not work anymore. When you reboot the Pi it works again. The Pi is used to ...
rick's user avatar
  • 21
2 votes
0 answers
111 views

Problem in initiating i2c driver module for bmp180 i2c based sensor at kernel level

For leaning purpose i am writing a i2c client kernel module for bmp180 pressure sensor. My kernel code is -> #include <linux/version.h> #include <linux/module.h> #include <linux/init....
Prateek Singh's user avatar
2 votes
0 answers
159 views

rPi 3B+ boots with no activity light or ethernet

I’ve been using a 3B+ headless for several months. Yesterday I rebooted like I normally do using sudo shutdown -r now. It shut down, but wouldn’t boot up again. I figured I had done something to the ...
JohnWickham's user avatar
2 votes
0 answers
204 views

Raspberry Pi OpenVPN connects, but no internet access

I am trying to make a VPN to my Raspberry Pi 3 B. I followed this video and installed OpenVPN in order to do it. I did the dynamic DNS thing and also port forwarded port 443 because I chose TCP since ...
Gobbling_Monkey's user avatar
2 votes
0 answers
30 views

Button hardware for RPI

I have the following circuit: I am wondering if this configuration will work if I'm trying to add buttons. I wanted to set them up as GPIO=GPIO.PUD_DOWN and to have it activate on the rising edge, ...
George's user avatar
  • 99
2 votes
0 answers
256 views

Raspberry pi 3b+; buster touch events

I am a beginner with the raspberry pi and trying to get my hands dirty on RPi 3b+, OS- Buster, 7 inch HDMI- touch screen. I am trying to build simple gui with one button and one label to display a ...
pravin's user avatar
  • 21
2 votes
1 answer
294 views

Timed trigger for GPIO input

I'm running a raspberry pi system that records fish as they swim passed an IR break beam sensor at a fish ladder. So far the system works well but I'm trying to cut down some of the false triggers. ...
kemistree4's user avatar
2 votes
0 answers
638 views

How to debug headless WiFi connection?

I'm trying to run Raspberry Pi 3B+ in headless mode: I'm doing this by placing ssh and wpa_supplicant.conf files in the root of the boot SD card folder. What I can do if something went wrong? Is ...
Roman Matveev's user avatar
2 votes
1 answer
1k views

systemd-networkd: Bond Ethernet and Wifi (USB Dongle), AP with Raspi 3b+ on board Wifi

Raspbian Buster Lite, Raspi 3b+ I want to bond ethernet (eth0) and a USB wifi dongle (wlan1) for network/internet access. This part I've managed with success, dynamic failover works perfectly. The ...
Evos's user avatar
  • 41
2 votes
0 answers
513 views

How to access bluetooth controller on `/dev/input/js0` as user/group?

I'm working on an application that is reading an XBox controller connected via bluetooth. After configuring it (see https://pimylifeup.com/xbox-controllers-raspberry-pi/), I noticed that only root has ...
jhill515's user avatar
  • 121
2 votes
0 answers
235 views

Touchscreen calibration: touchscreen does not cover full display

I have purchased an industrial touchscreen monitor that supports Linux through PenMount drivers. The VGA video output (via HDMI adapter) works perfectly, and the USB touchscreen is perfectly ...
SolarPilz's user avatar
2 votes
0 answers
76 views

Powwering Raspberry pi 3 with Li-ion battery

I use MT3608 boost converter in order to convert Li-ion voltage to 5V for RPI, but when I connect battery, RPI doesn't boot up. When I check output of MT3608 it is 5V but it can't tolerate peak ...
Ahmad Fatehi's user avatar
2 votes
0 answers
295 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 ...
Doctor Kurt's user avatar
2 votes
0 answers
135 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(...
Rajesh S's user avatar
2 votes
1 answer
330 views

Is there a way I can boot up an already shut down Raspberry Pi without physically accessing it?

I have a Raspberry Pi 3 B+ which is currently shut down, and not appearing on my network. The Raspberry Pi is running MotionEyeOS. And is powered using power over ethernet. I've tried starting it by ...
Sam Bunting's user avatar
2 votes
0 answers
5k views

Raspberry Pi 3 B+ - Error: Driver 'sdhost-bcm2835 is already registered, aborting. What is that and how to solve it?

I have a Raspberry Pi 3 B+ and a microSD 64GB. I am going trough the boot process following this video. This is what I have: MicroSD card 64Gb (it is working) formated to FAT32 using MiniTool ...
IgorAlves's user avatar
  • 143
2 votes
0 answers
3k views

Disable mouse acceleration on Raspbian Stretch

I can't figure out how to change the mouse acceleration setting such that the change is persistent. Changing the value in the Preferences > Keyboard and mouse settings keeps resetting every time I ...
Bailey Gibbons's user avatar
2 votes
1 answer
10k views

Difference between iface wlan0 inet manual and iface wlan0 inet dhcp in wifi to ethernet router?

I have developed a wifi to ethernet router. Wifi is connected to my home router having internet and ethernet is connected to my laptop( just for testing).My laptop is not getting internet, but it gets ...
vishnu m c's user avatar
2 votes
0 answers
301 views

Using Bluetooth to transfer data between two Pi's

I am using two Pi 3B+'s, one is a calculator without a screen, the other one is the human interface with a screen. I would like to command the calculator with the other Pi via Bluetooth. I am using ...
V.Hure's user avatar
  • 41
2 votes
0 answers
293 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 ...
Milliways's user avatar
  • 60.5k
2 votes
1 answer
5k 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:...
Washy's user avatar
  • 29
2 votes
1 answer
2k views

How to split a display into many and access all the screen

I'm trying to split the screen in raspberry-pi. and access each screen for each display I want the multiple layer in a single screen. Eg. my output screen resolution is 1024x720 in that i have to ...
Tejesh Teju's user avatar
1 vote
0 answers
73 views

Transmit data from LoRa connected to Raspberry Pi

I am working on a project related to data transmission between nodes and a gateway. Currently, I am using 2 ESP32s and 1 Raspberry Pi 3B+ as nodes, and another Raspberry Pi 3B+ as the gateway. The ...
Hien_lee's user avatar
1 vote
0 answers
27 views

Pi 3B+ (several of them ! ) no longer perfortm USB boot

All 5 of my 3B+ no longer perform a USB boot, from USB stick. Problem first noticed where OS was MoodeAudio and a HiBerry Hat was in use. Other similar systems (using diferent 3B+'s with different ...
Ouchita's user avatar
  • 11
1 vote
0 answers
19 views

2 LCD screens 1 raspberry3B+

I got a raspberry pi 3 B+ and two small LCD screens, this one and this one The first is attached on the gpio pins, the second one on the hdmi port the problem is they are just mirroring each other, ...
Claudio Bonifazi's user avatar
1 vote
1 answer
239 views

LXDE-pi -- cannot show desktop on local monitor, but VNC is fine

I'm setting my RaspberryPi 3B+ (Debian Buster) up as a magic mirror. I've run into a really weird issue that I can't wrap my brain around. The magic mirror software is basically an EletronJS app, ...
snowjak's user avatar
  • 11
1 vote
0 answers
55 views

Respond to GPIO in fastest way possible

I'm trying to respond to a trigger from a ~1MHz clock and I'm having trouble doing this in the time required (under 400ns). I'm using a Raspberry Pi 3b+ and I've seen benchmarks of 50Mhz+ for toggling ...
Robin Elvin's user avatar
1 vote
1 answer
242 views

SOLVED Create Wireless Hotspot doesn't work

I want to turn my Raspberry Pi 3b into a Wi-Fi Access Point, but i have the probleme as you can see in this image
mustapha_1234's user avatar
1 vote
0 answers
57 views

No FIQ.h on Raspberry PI3B+

I was exploring the FQI routine for ARM processors. I noticed that most Linux kernels provide a fiq.h header file yet my RPi does not seem to have it. Using find does not return anything. My Linux ...
Robin Y's user avatar
  • 21
1 vote
0 answers
334 views

How to Define USB Port as a Stable Name on Raspberry PI 3B+

In my Pi, on the /etc/udev/rules.d/10-local.rules file ACTION=="add", SYMLINK+="USB4", ATTRS{devpath}=="1.5" ACTION=="add", SYMLINK+="USB1", ATTRS{...
Dheeraj SmartIam's user avatar

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