Questions tagged [pi-3b+]

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

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votes
1answer
2k views

Pi 3B+ jack audio inputs and low latency

Related: Raspberry Pi 3 audio input? I need to be able to input several jack microphones (minimum 2, more could prove useful) to my raspberry, to do some audio processing (between all inputs), and ...
3
votes
1answer
89 views

Unable to use Chromium browser

I have a Raspberry Pi 3 B+ with Raspbian installed. I use it headlessly with Remote Desktop Connection with Windows 10. After I log on to the Pi, my home screen shows up. If I run the Chromium browser ...
3
votes
1answer
106 views

How to power a Raspberry Pi and servo motors with one power supply

I'm building a robot using Raspberry Pi and several servo motors. I'd like to power all components using a single lithium ion battery. I've looked into using a motor driver hat, but it seems the motor ...
3
votes
1answer
137 views

Powerbank for Raspberry pi 3 B + car robot

I am just beginner, so perhaps this question is not correct. I am going to build a robot car, and I am going to power it by using powerbank. My question is : is it enough for robot at all? I mean, is ...
3
votes
2answers
367 views

Can I drive a custom LED matrix from my Pi

I have an idea for a project, but I am unsure of the best route to take. I am going to create a custom 11x10 LED matrix (addressable LEDs like WS2812) with the intention of lighting up certain LEDs ...
3
votes
2answers
472 views

Connect Camera (TTL serial) to Raspberry PI

I recently bought a barcode scanner for a hobby project. I want to connect it to my Raspberry PI 3 B+. The interface for the camera is RS232 TTL serial. It has a flex cable about half the size of the ...
3
votes
2answers
454 views

RPI 3B+ state of /sys/class/net/eth0/carrier won't change

My application check /sys/class/net/eth0/carrier for ethernet status; it works great on RPI 3B but broken on RPI 3B+. If I plug out the RJ45 cable from both RPI 3B/3B+ : the RPI 3B will change the ...
3
votes
2answers
7k views

10MB/s speed on model 3 B+ gigabit ethernet

I'm running speed tests on raspberypi 3 b+ (gigabit ethernet interface). I've tested with ethtool from the terminal, and it shows Speed: 1000Mb/s Based on this result I assume both the router and ...
3
votes
1answer
108 views

Using SD card from 3 B+ in 3

I have a SD Card wich works perfectly on my Pi 3 B+ but I want to use it in my other Pi 3 but the Pi doesnt seem to start. Is there something that needs to be changed to use the same Card for both ...
3
votes
2answers
274 views

Increase number of ttys

I am running Raspbian 9 on my RPi 3 B+ and I have only 6 usable ttys (Ctrl-Alt-F#) while other are blank with blinking cursor. ls /dev lists 64 such ttys. How do I enable/run something on them?
3
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2answers
4k views

Raspbian - wpa_supplicant.conf Country meaning

I'm a bit confused of the country property in wpa_supplicant.conf. In official Raspberry Wifi Documentation it says this: On the Raspberry Pi 3 Model B+, you will also need to set the country ...
3
votes
1answer
7k views

USB Boot From SSD not booting — Rapsberry Pi 3b+

So I'm having issues getting the USB boot mode working on my new raspberry pi 3b+ and a couple of different SSD's I'll first go through all the things that I've done, and what I'm seeing. Installed ...
3
votes
0answers
252 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 ...
3
votes
0answers
417 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-...
3
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0answers
329 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 ...
3
votes
2answers
523 views

Keyboard and mouse don't work in GUI

I've tried to include as much information as possible, but if it isn't relevant I will remove it. I purchased a Raspberry Pi 4 months ago, and I've been using it to run some CRON jobs. I have a ...
3
votes
3answers
212 views

Access raspberry pi files through Samba or web browser without a router

I have just got my first Raspberry Pi, (3 Model B+) and am having so much fun with it. My first project is a simple wildlife camera that takes pictures using a simple python script to detect motion. ...
3
votes
0answers
91 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 ...
3
votes
0answers
457 views

Bare Metal RPI 3B UART not working

I have referred many tutorials to get UART working in bare metal environment on RPI 3. https://github.com/dwelch67/raspberrypi/tree/master/uart05 https://github.com/mrvn/RaspberryPi-baremetal/tree/...
3
votes
0answers
168 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 ...
3
votes
0answers
661 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 ...
3
votes
0answers
3k 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 ...
3
votes
1answer
521 views

Which Linux driver does control the PMIC of the Raspberry Pi 3B+?

The Raspberry Pi 3B+ contains the MaxLinear (previously Exar) MxL7704 power management chip (PMIC) with I2C interface for "on-line" reconfiguration of power sequencing and internal voltages.1 This is ...
3
votes
1answer
160 views

How to control Odrive with Raspberry pi? [closed]

How to interface Odrive with RPi? didn't find much information on the internet so want to know who has done something like this before. trying to use this code:- import odrive import time import ...
2
votes
3answers
814 views

How to program active cooling connected to GPIO

I have Raspberry Pi 3b+ with the case, which has a small 5v fan, which is connected to GPIO. Look to picture below: Fan works all the time. But I don't want it. I want it to work only in case, when ...
2
votes
3answers
90 views

Having some trouble identifying GPIO pins

Okay, some quick background first, I just managed to install Raspbian on a Raspberry Pi 3B+, and I started to try to do some projects. I started off with just writing python, which I'm happy to say ...
2
votes
1answer
81 views

What does the raspberry pi “Run…” thing do?

I bought a raspberry pi a few months ago and i'm curious what the "Run..." thingy does.(see image) I was able, to write in some commands but i'm not sure, what it does with it... Can someone please ...
2
votes
1answer
4k views

RPI3 Raspbian Stretch regular connection on wlan0 AP on wlan1

I'm trying to make a very simple setup with my RPi. On the on-board standard wlan0 I want to connect to my home network normally, using a wpa_supplicant file this works very well. Now I'm having ...
2
votes
2answers
277 views

Raspberry Pi random reboots (Raspi 3B+)

I have a raspberry pi 3B+ model that I bought back in February 2019. For sometime, I "remember" it was working fine (although I can say from experience - memories can be deceiving). Then I ...
2
votes
2answers
131 views

What are the differences in architecture of Model 2 and Model 3B+? (SD card not working in model 3B+)

I have two raspberries (model 2 and model 3B+) and two sd cards. I wanted to swap the cards. The card from model 2 is not recognised in model 3B+. There is no green LED which indicates that the ...
2
votes
2answers
342 views

Unable to flash Android of things on SD card properly

I have been trying to install Android of things on Raspberry Pi 3 B+ but cannot get it working. I downloaded latest android of things setup utility, ran it on windows 10. I have successfully flashed ...
2
votes
1answer
1k views

Why am I getting bash: esptool.py: command not found on new Raspbian install after installing esptool.py

I am having major difficulty in installing MicroPython onto an ESP3 using my RPi3B+ (may ask about this elsewhere) but for now I am trying to achieve this on a new fresh install/distro of Raspbian. ...
2
votes
1answer
503 views

Green LED on RPI 3B+ GPIO

I have seen a few examples of wiring a red LED directly from the RPI GPIO pins, however, I need to wire a GREEN LED and am having trouble calculating the resistor needed. I believe that a green LED ...
2
votes
2answers
214 views

128GB in Rpi3b+?

I’m thinking about getting a Samsung 128GB microsd as they’re cheap in Amazon and I assume not fake/shanzai. But can the Rpi3b+ use this? Also it is speed 10 and U3 rated because there’s no longer ...
2
votes
2answers
79 views

Can't Make IR Led Turn On

I'm trying to get my raspeberry pi to control a floor fan via IR. I'm stuck on getting the IR codes to be emitted through the IR LED. I'm not able to get the IR LED to turn on at all. I'm checking ...
2
votes
1answer
797 views

Disable 5Ghz Wifi-band on Raspberry Pi 3B+

is it possible to disable the ability to use 5Ghz for the wlan0 interface? I only want to use 2.4 Ghz Wifi Networks. So only 2.4Ghz Wifi is available and 5Ghz is disabled. thanks in advance
2
votes
3answers
138 views

Raspberry Pi Security Issues: SSH ATTACK? Case Study

This might be a long post so please bear with me. This is a scenario that took place a year back when I had very almost no knowledge of raspberry pi. Right now I am trying to learn some stuff about ...
2
votes
1answer
35 views

Raspberry Pi with touchscreen - screen turns white and pi restarts when trying to use LEDs

We currently have a Raspberry Pi 3B+ with touchscreen hooked up to a PCB, and are trying to run adafruit neopixel 60led strip but, when we try and send data using their library, the screen turns white ...
2
votes
2answers
1k views

How to check if SPI is enabled and functional on Raspi 3b+?

I have run raspi-config and enabled SPI and also verified that /boot/config.txt contains the line: dtparam=spi=on However, when I run lsmod | grep spi I get the following: spidev ...
2
votes
1answer
60 views

Remote Deployments

I have an application that runs on a RPi 3. This application can update itself by checking for a new version on a web server. If there's a new version, it downloads it from the server, runs a ...
2
votes
3answers
312 views

How to recover 'deleted' microSD card space? [duplicate]

I've been playing around with my RPi3B lately and for whatever reason wanted to reformat my SD card. I'm unsure how I did it but now when I insert the card it says there is only 31mb of space. The ...
2
votes
2answers
2k views

Buildroot on Raspberry Pi With Lightning Bolt on Boot

I'm attempting to get a minimal buildroot system up and running on my Raspberry Pi 3 B+ but after I've flashed the SD card, installed the card, powered up the pi, and connect an HDMI cable, I only ...
2
votes
1answer
1k views

Differences in GPIO between Raspberry Pi 3 B and 3 B+

Is there any difference in the GPIO layout between Raspberry Pi 3 B and 3 B+? If yes, please provide the differences.
2
votes
1answer
1k views

Identifying each component on raspberry-pi3B+

Can anyone help me to identify each and every component on pi, like where is wifi chip, which one is processor etc etc?
2
votes
3answers
185 views

Ribbon Cable for bridging the headers of Raspberry pi and Custom hats

Hello I am in need of a ribbon cable for my custom pi hats. The problem with ordinary ribbon cables such as this I could not make it to align the rows of the pins will get swapped because of the ...
2
votes
1answer
46 views

USB device not found in lxsession mode

When I use the desktop mode of Raspbian, I can find the connected USB device on my Pi in this path: /media/pi/'My Usb Disk' But when I use chromium web kiosk mode and lxsession I cannot find the ...
2
votes
2answers
48 views

Raspberry Pi getting burningly hot and not displaying

I tried turning on my raspberry pi 3 b+ and it wouldn't show anything to my TV, the entire Pi ( mainly around the SD card ) was so hot I could barely touch it. Bare in mind the pi was only on for ...
2
votes
2answers
101 views

Determining how specific services were started?

I have a Raspberry Pi which is running well, and am looking at creating a status app for it. I have some services that are run on startup, and I want my app to check that they are running, and if not ...
2
votes
1answer
144 views

Getting OpenGL ES Framebuffer back to CPU Memory

I've started learning how to use OpenGL ES, and am trying to do some general purpose computing using the Pi's GPU. I've got it mostly working, but I'm hung up on the last step: getting a framebuffer ...
2
votes
1answer
482 views

DNSMasq unknown interface wifi0 - failed to start

Introduction I am trying to use my Ubuntu Core-RaspberryPi as a Wifi Access point. Therefore, I am using hostapd and dnsmasq. I followed this tutorial in order to setup everything. I start them ...

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