Questions tagged [pi-3b+]

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

358 questions with no upvoted or accepted answers
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178 views

180 panoramic based on multiple cameras

Need some help please :) I would need some help to find the best option for a product upgrade. Right now, it consists of a Raspberry Pi 3 B+ with the Camera Module v2 and an external mobile ...
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78 views

raspberry pi display reverse color issue

my problem with the Raspberry Pi Official 7" Display: In this page I found this: My display fades out to weird patterns when I shutdown/reboot my Pi. Don't panic! This is perfectly normal. It ...
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295 views

Raspberry Pi 3B+ Bluetooth undiscoverable on iPhone

I installed latest version of Raspbian Stretch with desktop (which comes with pre installed bluetooth). I turned the bluetooth on, and made it discoverable. At the same time I searched for available ...
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3answers
127 views

How to choose a suitable display for pi 3 B+?

I'm currently looking for a display 5 inches or less for my PI, but there are a lot of information and since I'm quite new to the world of raspberry I'm looking for some help and guidance on where ...
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454 views

Chromefy (Chrome OS) on RPi3B+?

Has anyone tried using Chromefy (a way to get official Chrome OS on any device) or similar Chromium OS releases on the RPi3B+? If so, which one works best?
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1answer
2k views

(Error trying to run qjackctl) libEGL warning: DRI2: failed to authenticate qt5ct: using qt5ct plugin

Running Raspbian installed with NOOBS. qjackctl is installed with all its dependencies using Synaptic. Just trying to run Guitarix on my Pi3 B+. I tried following the instructions in this solution, ...
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449 views

Low video quality with h264_omx encoder

I have a Logitech C922 webcam and I'm recording using ffmpeg with this settings: ffmpeg -thread_queue_size 1024 -f alsa -r 16000 -i hw:1,0 -f video4linux2 -thread_queue_size 512 -s 1920x1080 -i /dev/...
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1answer
2k views

Rpi3b+ to Rpi3b+ jtag/SWD connection and OpenOCD

I'd like to hook together two Raspberry pi 3b+ to use jtag/SWD with OpenOCD. I learned it can be done, but implementing it has proven challenging. I have two questions: How to connect the Rpi's. If I'...
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0answers
560 views

Android RPi bluetooth disconnects after pairing

I'm trying to set up some simple communication between my RPi 3B+ and my phone One Plus 3, but when I try to pair the RPi, it gets disconnected a few seconds after pairing, and disappears from "Paired ...
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0answers
249 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 ...
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1answer
574 views

pymodbus on Raspberry Pi 3B and Energy Meter

Followed this thread on enabling the serial console on the Raspberry Pi 3B. Checked the functionality using this code: dmesg | grep tty Which produced these results: ... console [tty1] enabled ......
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444 views

Ethernet Indicator led on pi 3B+ not glowing

I am a newbie to Raspberry Pi and recently bought Raspberry pi 3 B+. I first downloaded and burn the minibian on sd card as some course suggested minibian. But whenever I connect pi with power, only ...
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144 views

PI NOIR Camera Not Working

I recently bought a Raspberry Pi 3B+ and a Pi Noir Camera and attempted to set them up. I followed the install instructions on the Pi website for the board and camera, and unfortunately received an ...
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2answers
653 views

Lan and Wifi interfaces behave strangely when trying to set a static IP

I'm using an RPI3B+ to learn about dhcp servers. I've hit a snag I can't figure out. Please bear with me. I want to explain what's happening in detail so you can understand it better. I booted my pi ...
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0answers
1k views

Slow Chromium on Raspberry Pi 3B+ after update from Jessie to Stretch

I've been looking into my problem for days now and I didn't find a solution to it. If there is already a question about this issue, I have not found it, my apologies. Please direct me to it if there ...
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0answers
110 views

Jackd problem on RPi3 B+ Stretch

I'm running Stretch on an RPi 3 B+. I have a C-Media USB sound card showing up as: card 1: Device [USB Audio Device], device 0: USB Audio [USB Audio] and ALSA recognises it as the default card ...
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0answers
87 views

Safe GPIO configuration for powered-down RPi?

I have a RPi3 driving a robot and I've built a dual H-bridge circuit to run it. I have seperate fuses for the RPi and the driving circuit and I'm glad I do! Trouble is, when the RPi is off, the H-...
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113 views

Recent raspivid segmented filenaming does nog work properly

I updated to pi3B+ and got the most recent raspivid. In my old software I use raspivid -sg 6000 -wr 40 -sn 4 -o REC_%04d.h264" to produce a file named REC_0004.h264. The new version produces a ...
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0answers
105 views

Connect to failover WiFi if other router is unavailable

I have two WiFi networks configured in /etc/wpa_supplicant/wpa_supplicant.conf as below, and I'm able to manually switch from one to the other via GUI with no problems (via RealVNC usually). However, ...
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1answer
439 views

Trying to run a C# Discord Bot on Raspberry Pi 3 Model B+ with Windows 10 IoT

I have developed, in Visual Studio 2015, a C# Console Application which uses the Discord.Net API. It works great running on my PC, which has Windows 10, however I am looking to run the program 24/7 on ...
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0answers
44 views

Rpi3 WIFI AP go down after some time of innactivity?

I have setup my Rpi 3 as wifi access point and it was working for a long time. But some day, wifi stop working unexpectedly and i was no idea that what was the problem. It means wifi access point is ...
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2answers
380 views

Can't blink a LED using SPI interface on Raspberry Pi v3

As a part of my PoC project, I'm using single 5050 LED made by Adafruit. I wired it like this (LED - RPi): DI (Data Input) - SPI0 MOSI CI (Clock Input) - SPI0 SCLK GND (Ground) - GND VCC (5V) - 5V ...
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0answers
73 views

Relay for controlling backlight of touchscreen not reacting after a while

I connected my rpi3 to a 10" touchscreen. I connected the backlight of the touchscreen to a relay which I'm controlling via the GPIO pins. This is working fine for the first couple of minutes. But ...
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0answers
403 views

How to upgrade other major OS to work on 3 B+

Scenario I am yet another victim of thinking my rpi 3 B+ was broken when it wouldn't boot up. It turns out that the 3 B+ is looking for some special boot instructions. I currently have: Ubuntu Mate 16....
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0answers
292 views

Raspberry Pi 3B+ Ethenet socket Orange LED flashing

I have this weird issue with my Raspberry Pi 3B+ where during normal operation, e.g. while running sudo apt update && sudo apt upgrade the command errors out saying it couldn't connect to the ...
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2answers
4k views

RPi 3 B+ will not connect to hidden Wifi

I have two devices, both are B+, one is a rev. 1.2 the other rev 1.3. I have configured one SD card and when used in the rev 1.2 it connects without issue to the hidden wifi network. However, when ...
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0answers
22 views

Why do fbedev OGLES Draw Calls takes 30+us each?

When operating with the framebuffer OpenGL Drivers on my HTC Vive, performance is incredibly good on my Raspberry Pi 3B+ EXCEPT that every single draw call takes anywhere from 30-50us, regardless of ...
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0answers
2k views

Slow Refresh Rate on WaveShare 3.5" LCD (B) on RPi 3 B+

I've flashed StickyFingers-Kali-Pi-armhf-180607 to my Raspberry Pi 3 B+ with Waveshare 3.5" LCD (B). I update and configure the unit for my specific screen using the guide's instructions, entering the ...
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2answers
784 views

Wifi conflicts with bluetooth: impossible to use BT mouse + keyboard with wifi turned on

2 years later, I still have the same issue. In Raspbian, using the built-in Bluetooth controller: Connect a BT mouse Connect a BT keyboard Turn on the built-in Wifi and connect to a network ...
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0answers
37 views

A weird bug in Raspian

I just updated my Raspberry pi 3B+, after the reboot all windows get their “top” cut of like this: And everytime the cursor is outside the current window it appears as an “x”, I hope you can help me ...
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0answers
1k views

Can't Login to Pi0 console from Pi3 B+ via UART Serial USB-TTY Adapter

I am new to RPi's so bear with me please: I am trying to log in to the Pi0 console via sudo screen /dev/ttyUSB0 115200 but I just get a blank screen. Ouput of dmesg | grep tty: [ 0.000000] ...
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1answer
365 views

Can't get past rainbow screen with Kali install process

I am new (to all of this, Pis, Linux, etc). This is my first real attempt at working directly with hardware as well. I needed a new project so I got a Canakit started set which came with a Raspi 3B+,...
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1answer
963 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. ...
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0answers
609 views

Issue on Display Resolution

I am unable to set the correct screen resolution when trying to connect TV/Monitor(via HDMI) with RaspberryPi3 at runtime, the following are the steps: Disconnect TV if already connected Boot ...
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0answers
25 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
18 views

Playing videos based on GPIO input Python

I am making a Raspberry Pi(with model 3B) video player that pays a video when an button(from GPIO) is RELEASED. So what I would like to do is when a button is released the video would play. And when ...
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0answers
12 views

importing cv2 error

Hey i have working on 2Rpi One is working fine but the other one is giving me this error. ImportError: /home/pi/.local/lib/python3.7/site-packages/cv2/cv2.cpython-37m-arm-linux-gnueabihf.so: undefined ...
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1answer
27 views

Controlling LED using PWM

When I run this code I’m expecting to get a led that brightens but I get a led that dims. import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BOARD) GPIO.setup(11,GPIO.OUT) dc=0 LED=GPIO.PWM(11,...
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0answers
16 views

Cant connect to my pi

I am trying to setup a Pi-hole server, but once I got everything installed and tried to go to the website, it didn't connect and got ERR_CONNECTION_TIMED_OUT as the error. I thought it was a problem ...
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0answers
24 views

Raspberry pi 3B+ not booting up ( ACT light / green light doesn't blink at all)

I have an old raspberry pi 3B+. After a long time, I tried to use it. I found raspbian stretch image file in an old archive. So I wrote it in a 32GB microSD card and tried to boot the pi. But the ACT ...
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0answers
41 views

Raspberry Pi 3 B+ SSH Connection Refused After Plugging in SSD

I am currently setting up a low budget DIY NAS with a raspberry pi 3 B+ and a Samsung 860 QVO 1TB SSD. The pi is connected to my router and I have been able to ssh into it with no problems. I have ...
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0answers
22 views

pi 3 B+ running ubuntu 20.04 turn off HDMI USB

I have my pi 3 B+ running with ubuntu 20.04. I have a headless system without any peripherals connected. i currently have my ethernet connection only. How to turn off unused HDMI,USB [leaving one] etc ...
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1answer
32 views

Permanent IP Routing on rPi

I need to be able to ping my rPi through eth0, but it is connected to wifi via wlan0. Turns out, it receives the ping on eth0, and replies through wlan0. I have a rPi b+ 3, latest updates. Running ...
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0answers
32 views

How can I send input from my laptop mic to raspberry pi?

I have a raspberry pi 3 and it is hosting a web server and want to send audio input to it from my laptop mic to the web server that it is hosting for some task to be accomplished. Problem is, it is ...
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0answers
9 views

How to use the turtle graphics package on my Pi 3B

I have a built a car which uses distance sensor to navigate a room. I want to map out the room's diagram based on how the bot car moves. The turtle graphics package in Python translates commands like ...
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0answers
28 views

Raspberry Pi3 - Controlling 4 DC motors

I need to feed 4 DC motors of 5V on my Raspberry Pi 3 Model B using PWM (Pulse Width Modulation). Currently, I have the next components: 2 NPM transistors, 1 L293D integrated circuit, resistors (220 ...
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0answers
51 views

Got a raspberry pi 3b+ 3v3 pin shorted. What can i do?

I've bought a Raspberry Pi 3 model b+, to try as a simple computer Put it on the case, tried for some time, but it did not hit the performance i was expecting, so droped this idea. I kept it save, ...
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1answer
22 views

How do I route web traffic to specific service ports based on host name?

I have a 3b+ that I want to run several services on to support my home network. All of the services provide web interfaces to manage the service. I can handle remapping the ports on the ones that ...
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1answer
251 views

How to interface MLX90614 temperature sensor with Raspberry Pi

I have a mlx90614 sensor and I am interfacing it with raspberry pi 3 B+. I am using adafruit library python. Below is the code: import Adafruit_GPIO.I2C as I2C I2C.require_repeated_start() class ...
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0answers
41 views

How to disable output to serial (GPIO) during boot

I'm trying to drive a motor control over the Raspberry Pi's GPIO serial pins (GPIO 14 and 15) I've disabled the serial console, however, during bootup of the Raspberry PI, it still sends data over ...

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