Questions tagged [pi-3b+]

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

322 questions with no upvoted or accepted answers
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48 views

Using pigpios waves and audio output

I am using a Raspberry Pi 3 B+. I want to play audio through the 3.5mm jack and use PWM at the same time or successively to simulate a IR-Remote. I know that you can't use the hardware PWM while ...
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19 views

Restarting another python script that is running from a running python script

I know that os.execl(sys.executable, sys.executable, *sys.argv) restarts the current running python script. But what if I have two scripts that are running and under certain conditions, the main ...
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92 views

RF ISM 433MHz Module Using Rpi RadioHead Low Speed Problem

I have a rf module 433Mhz which consist of a transmitter and a receiver, I used virtualwire and Radiohead library in Arduino and it's pretty fast. When I shifted that to rpi there were no dedicated ...
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12 views

rp3 can't boot openelec

I am using rp3 and trying to install openelec from here and using the second one for rp2 and 3 I tried to format the sd card to fat32 Tried to copy the image after extraction using dd Tried using ...
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18 views

CompoundPI unidentified server problem

I am trying to use CompoundPI (https://compoundpi.readthedocs.io/en/release-0.4/quickstart.html) with two RPIs and an ubuntu client. CompoundPI connects multiple RPIs, that each of them has a picamera,...
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166 views

Rapberry Pi 3 | Chromium Aw Snap

I'm running into a recurring issue and I can't seem to find a resolution for it that works. Pi info: Linux version 4.19.79-v7+ (dom@buildbot) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-...
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22 views

bind event from evdev to GUI wxpython

I have buttons and joystick as in the image below and I am reading events from these inputs on raspbian with the evdev library, I am also running a GUI using wxpython. My question is how can I bind ...
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127 views

Getting error on Raspberry pi 3 while trying to run chromium in app mode

$chromium-browser --window-size=1080,960 --window-position=0,0 --app=/home/pi/Desktop/python/LMMS.html --disable-quic --enable-tcp-fast-open --ppapi-flash-path=/usr/lib/chromium-browser/...
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30 views

unable to scan the ip address of Raspberry pi 3 B+ by using advance ip scanner

I have connected the raspberry pi to the laptop without using Ethernet cable (I am getting power (5v) from the laptop). I have inserted a file in the SD card of Raspberry Pi for WiFi connection ...
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84 views

Enable Fine Timing Measurement (FTM) on Raspberry Pi 3B+

Is there any way I could create a mesh of Raspberry Pi 3B+ access points supporting the IEEE 802.11mc standard? I'm interested in experimenting with the Wi-Fi RTT Android API for indoor positioning ...
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42 views

Why the script hang for 2 days?

I am running a python script to check the internet connection of a wifi network. It is being run for every 10minutes. Afwer a one month of working, the scheduler is not invoking the actual function ...
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408 views

VLC stream RTSP USB webcam

I'm trying to stream a usb camera using VLC. I used this page to get it working on a pi zero with a raspberry pi camera attached to it. On a second RPI 3B+ I'd like to do the same only with a USB ...
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1answer
42 views

Raspberry Pi 3B+ input pin strange behavior

I have few switches connected to Raspberry Pi inputs. Internal pull up resistors are enabled. When I connect pin to the ground Raspberry Pi behave fine - pin state is low. However when I disconnect ...
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26 views

Mode of configuration on Zigbee

I connected one Zigbee with an overlay shield fixed on the RaspberryPi and one Zigbee attached to a vibration sensor. What mode should I configure on the Zigbee's?
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36 views

Raspberry PI 3B+ won't connect to smartphone Wi-Fi hotspot if it's “Shared wifi” instead of 4G+

I have a Samsung Galaxy S8 and a Raspberry PI 3B+. The PI can connect to a normal Wi-Fi without any problems. The PI can connect to my S8's hotspot if internet is from 4G(+) The PI CAN NOT CONNECT to ...
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44 views

chromium os on rpi3 is not supporting video streaming nor I can watch live or other videos on Chrome except for YouTube

I have installed chromium os on rpi3 b+ and while Playing any live video or any other video except on YouTube it's showing video not supported what should I do to fix this issue please help
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1answer
113 views

Raspberrypi unable to read 2000 ppm encoder

I am using a DC motor attached with a 2000 ppm incremental encoder. I am using RPI to count the number of ticks, my code works fine but I am not able to calculate all the 2000 ticks. Any help would be ...
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50 views

kernel warning in dmesg

I've bought a new 3B+ and when I add dtdebug=1 to config.txt in /boot the following shows up in dmesg. I'm also having a problem where a GPIO extension board isn't being picked up at all, is this ...
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63 views

Installing HY463xx touchscreen driver

I am trying to install HY463 touch screen driver on to raspberrypi-cm3 buster lite. I have installed drivers before. But Their website does not provide any Makefile or any documentation for me to ...
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85 views

No ethernet on RPi 3B+

I have 3 RPi 3B+, all exhibit the same behaviour. 2 were bought a while ago, one more recently. When starting, on lucky days, they will get an IP from DHCP. If not lucky or upon first reboot, they no ...
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1answer
199 views

Why the message “raspberrypi dhclient: send_packet: Network is unreachable”?

I am having a raspberry pi jessie OS. I configured it as ethernet to ethernet router. eth0 is connected to a modem and eth1 is actually a usb to eth converter. Rpi get internet through the eth0 ...
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35 views

Combining potentiometers to register as buttons

Does anyone know how I could use 2 potentiometers (1 for vertical axis, other for horizontal) and combine them to register as buttons? I want to make a shifter for sim racing and I want to combine 2 ...
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33 views

How can we acquire an analog signal having both positive and negative parts , i.e. a bipolar signal, using Raspberry pi3 B+ module?

I am using raspberry pi 3 B+ board. I have to acquire analog voltage signal having both positive and negative parts, i.e. a bipolar signal How can i acquire this signal with the R-pi? I have tried ...
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1answer
242 views

RPi4B PCA9685 PWM Controlling Servo Problem

I have this RPi3 that I am running a bunch codes on it. It is communicating with a server and also I have python supervisor running on it. Now I am trying to set up the same system on RPi4. For some ...
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95 views

dnsmasq DHCP refusing to work. NordVPN hotspot on Raspberry Pi

I'm trying to set up a NordVPN hotspot on my Raspberry Pi 3B+ so I can connect it to my smart tv and get rid of Netflix region restrictions. I have everything set up properly but still dnsmasq DHCP ...
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44 views

Logitech F310 hot plug working on Pi 3 B+ but not on Pi Zero W

I wrote software in C for my work that reads Logitech F310 controller input and controls our vehicle accordingly. I wanted my software to be fault-tolerant, so I added code that checks the presence of ...
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146 views

Why UDP connection from hotspot raspberry doesn't work

To start with I have to say I have seen few similar questions but none of those could help me with resolving my problem. My setup is, two raspberry Pi 3 B+ with Raspberian on board(updated). One of ...
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60 views

When I install volumio in my raspberry, I got the error as below, how to solve the error:Failed to open ALSA device “hw:1,0”

When I install Volumio OS in my raspberry 3b+ and plan to play music withe it, but when I play a music from the GUI of volumio, I just got the error as "Failed to open ALSA device "hw:1,0";No such ...
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44 views

irsend pauses for significantly too long

I'm having a problem replaying a raw sequence using irsend. The sequence below is very simple. Very long pulse (6700us), followed by a very long pause (3400us) followed by two short pulses and two ...
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227 views

Audio output not working

I bought a raspberry pi3b+ for my son that is connected to the TV, I installed both raspian and lakka and i configure it, but there is no sound coming from the TV via the HDMI port. After several ...
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88 views

RPI GSM Add-on SIM800 AT commands are not working

I am trying to send sms using RPI Add on v22 module and Raspberry-pi 3+. I have mounted this module on top of Raspberry-pi. When I use minicome using minicom -D /dev/ttyS0 -b 115200 -o I get the ...
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1answer
61 views

PIServer network boot

When i boot a raspberry pi model 3b+ from the piserver running on debian stretch x86 i get the follow error : ---[end Kernel panic - not syncing : VFS : unable to mount root fs on unknow-block(2,...
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286 views

Can't use my Raspberry Pi 3 B+ for I2C in high speed mode

I've been trying to use a Raspberry Pi 3 B+ to get data from an accelerometer, namely an ADXL 357, via I2C but the problem is that the data rate is about 200 Hz or even less. I tried to set the ...
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38 views

RaspberryPI use with 3G/4G dongle

I've been looking into a project which would require me to enable my PI to have a remote internet connection. I'm wondering if the PI is able to use a 3G/4G dongle for this? If it can, does anyone ...
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260 views

VLC cannot read mjpeg video produced over USB webcam

I'm trying to use vlc to transcode a mjpeg stream from a USB camera connected to a raspberry pi 3B+, however VLC seems unable to read the mjpeg video stream from the camera, I already checked the v4l2-...
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51 views

USB mic input + 3.5mm jack output

I'm trying to set up my Rpi using a USB mic and output through the 3.5mm jack. If I select the USB mic in alsamixer, I don't have any sound at all. If I use the 3.5mm I get sound but cannot record ...
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18 views

I2C client driver instantiation using Device Tree - probe did not get called

I am writing a sample and simple i2c driver in which I am trying to instantiate the i2c client device using device tree overlay. I have got some DTE overlay sample which i have complied to .dtbo and ...
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18 views

Changing picade's power off functionality

I added a picadeX on top of my Rpi (3B), and it comes with a soft power off functionality. It works like a toggle switch : click once to power on click again to power off As I wanted to integrate ...
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30 views

Can't log in via any means

So I'm running Raspbian (I installed with NOOBS initially if that makes a difference) on a Raspberry pi model 3B+ and I can't log in. before anyone says it, I know this question has been posted before,...
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1answer
44 views

autonomous lawnmower with gps, radar and remote control

I am trying to build an autonomous lawnmower using raspberry pi 3B+. I want to include auto-steering or remote control and also I want to include the radar as well to avoid any obstacles and also want ...
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27 views

Remote access lags on 3B+ when firewall enabled

I'm having some weird problems with SSH and VNC on a 3B+. I've got basic firewall rules on the Pi to allow that traffic through, but I get major lag with them. I'm talking 2 minute delays. If I ...
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294 views

Raspberry pi running hassio wont connect to internet/network all of a sudden?

I have a raspberry pi 3b+ which i use at home to run all my home automations stuff - one day when i came back from work nothing worked? all my dashboards, my lights, all automations nothing worked.. ...
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1answer
336 views

How do I connect my Raspberry Pi 3 B+ to a hidden network? Nothing I've read works

I just installed Raspbian on my SD card, but I cannot connect to my network initially because it is hidden. I've tried following the guide https://raspi.tv/2017/how-to-auto-connect-your-raspberry-pi-...
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1answer
78 views

How to use at the same time 2 hardware pwm in wiringpi

I need help to configure 2 hardware PWM channels. I am developing device, and sometimes I will need active 2 PWM channels with different frequencies (frequencies is low: 410 and 580 Hz).I'm writing ...
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44 views

PiCAN2 network is down

I am using RPi 3 model B+. I am trying to set up can communication using Pi CAN2 (From SKpang) with baud rate 500000. But I am getting "write: Network is down" whenever I am sending "./cansend can0 ...
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1answer
129 views

SSH connection hangs in Mac OS Terminal - No prompt for password

I've been SSH'ing into my Raspi 3 B+ for some time now from my Mac OS with no issues. I recently set a static IP address for my Pi on a LAN network connected via ethernet cable. I edited sudo nano /...
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1answer
29 views

Raspberry 3B+ Can it be connected the same time for WiFi and for Ad-Hoc wireless network

Sorry guys, I'm not a Linux guru at all. So the problem: I have a general wifi in my office and there is Internet shared via this network I have a raspberry 3b+ device I could connect rpi to this ...
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1answer
265 views

Unable to install Mongo-DB on Raspberry Pi with Ubuntu Core 18.04

I am trying to install mongoDB on my Raspberry Pi 3b+, which has an ARM 4-Core 64 bit processor. I was trying to install MongoDB on my Pi just as mentioned in their documentation but unfortunately I ...
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149 views

reading EMG on Rpi3 using Teensy 3.2 on usb serial

We are using MyoWare EMG sensor and reading the RAW EMG pin as well as filtered SIG pin on the board. What it basically does is sends an analog value as a fraction of the input Voltage, which in this ...
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1answer
61 views

Can Pi 3b+ be killed by wire under ethernet port

Can raspberry pi be killed by cable under ethernet port? I had moved pi on desk and placed it over a cable in area shown on picture (cable has only 5mm exposed wire), after that pi freezed and din´t ...

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