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Questions tagged [pi-3b+]

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

1
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2answers
634 views

Switch between wifi client and access point without reboot

I want my Raspberry Pi to be used as access point or as client connected to my internet router but not both together. So I want to switch between these two modes with one simple command without ...
1
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2answers
32 views

Raspberry Pi and Arduino Due Spi

Is there any way to establish SPI communnication between Raspberry Pi 3B + and Arduino Due. Both only support master mode. I tried to google but mostly answers from 2013 come up. Has there any recent ...
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0answers
22 views

Still getting problem : “Network Error : Connection refused” problem

I am facing this problem even after trying many recommendations from this site. I am using windows 10, raspbian stretch lite(2019)/raspbian stretch(Nov2018) and I don't have a monitor. Earlier I could ...
1
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0answers
8 views

Linux headers missing from a custom kernel built through cross-compilation

Helo, I have followed the instructions given at https://www.raspberrypi.org/documentation/linux/kernel/building.md to build a custom kernel. (I have cross-compiled it on an x86 box.) The custom ...
2
votes
1answer
48 views

Opencv VideoCapture much faster than PiCamera

I am trying to process frames from my V2 RPI Camera at high framerates and am stuck with the picamera module. The VideoCapture class from OpenCV seems to be much faster than using PiCamera....
1
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2answers
41 views

How do I find the IP address of my Raspberry Pi 3B+

I don't have a HDMI screen, nor do I have access to the router. From what Ive been told, it has Kali installed. I am connecting the Raspb directly to the computer with a Ethernet cable. I have tried ...
1
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0answers
13 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(...
0
votes
1answer
33 views

Using cgroup module in iptables cause “no chain by that name” error message

Trying to use cgroup module in iptables rule cause "No chain/target/match by that name" message. I'm using: Linux raspberrypi 4.19.42-v7+ #1219 SMP Tue May 14 21:20:58 BST 2019 armv7l GNU/Linux ...
0
votes
1answer
174 views

Can I modify an RPi2 image to boot on an RPi3 B+?

I have a Raspberry Pi 3 B+, and none of the operating systems that usually work on the RPi 3 will boot. I've done a small bit of research, and I think this has something to do with an outdated ...
1
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1answer
77 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?
0
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0answers
19 views

RPI 3B+, Wifi super slow (10x slower than onboard) when using USB Wifi despite huge antenna

TL;DR, usb-wifi works, but it's extremely (!) slow compared to onboard wifi, even though the dongle has a big antenna and a a better signal quality. I looked far and wide and did all I could find, but ...
0
votes
1answer
14 views

init.d script does not run start on boot but starts manually (Raspbian)

Whenever the system starts, the zfs-import init script does not run: root@kapnet:# /etc/init.d/zfs-import status ● zfs-import.service - LSB: Import ZFS pools Loaded: loaded (/etc/init.d/zfs-import;...
1
vote
1answer
70 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 ...
1
vote
3answers
97 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 ...
2
votes
1answer
37 views

Simple python RFID (RC522) authentication system not working

I am a realative RPi noob so forgive me if this is a simple problem. I am making a keycard system with the RC522 reader, and I have everything wired up correctly. It works with writing and reading ...
1
vote
3answers
53 views

pigpio.error: 'no permission to update GPIO' (again)

I am a beginner in Python and in the Raspberry field. I want to write a code to drive 3 leds with a PWM signal. The three leds must not emit at the same time and I want them to emit pulses trains. In ...
0
votes
1answer
16 views

What does “ ad9833.c:36:2: warning: implicit declaration of function ‘bcm2835_gpio_fseL’ [-Wimplicit-function-declaration] ” mean?

I'm trying to generate signals using an AD9833 and a raspberry pi 3 model B+ but each time I build my programme I have this error message: ad9833.c:36:2: warning: implicit declaration of function ‘...
0
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0answers
8 views

Adding Subtitle font in OSMC

Hi I have OSMC installed on berryboot. And I want to Add my own Subtitle fonts (.ttf). I tried to locate Font file from OSMC File Manager. But I only found a file named "addons" this was the path: ...
0
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0answers
15 views

RaspberryPi 3 B+: Error in running two webcams simultaneously

I purchased two webcams (Logitech C310 HD Webcam) to use with RaspberryPi (RPi 3 B+ model). When I run individual cameras, they are running fine but when I tried to run both cameras at the same time ...
0
votes
1answer
19 views

Pi 3 B+ sudden audio failure

A few months ago I bought a RasPi 3 B+ to act as an overglorified doorbell using reed switches to tell the Pi to play a custom MP3 with the "Playsound" Module into the Company's PA system. It worked ...
2
votes
1answer
23 views

Is CPU frequency scaling active?

We have Raspberry PI 3B+ with Pi Touch Display and Pi camera. Today, we measured power consumption and this setup takes around 1 A with Xorg+our app and around 900 mA when Xorg is stopped and only ...
0
votes
2answers
29 views

Raspberry pi 3 model B does not boot from USB

I've got a Raspberry pi 3 model B+, but unfortunately the SD card slot has broken, so I googled about booting RPI3 from USB and I realized it's possible but all tutorial that I've read mentioned that ...
0
votes
0answers
23 views

Raspberry Pi 3 B+: Many video devices are showing

I attached two webcams to RaspberryPi 3B+ using USB power hub. But when I wrote ls -la /dev/video* in Terminal, output shows many video devices as shown below: crw-rw----+ 1 root video 81, 0 Jun 7 ...
1
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2answers
136 views

Raspberry Pi 3 B+ to Samsung Galaxy S7 USB Tethering Inactive eth1 Interface

This is a follow up to Static IP Address for USB Screencast in Raspbian Stretch. Concisely, I want to use USB Tethering to connect VNC on my smartphone to the RPi for use as a remote desktop-type ...
3
votes
1answer
1k 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 ...
1
vote
1answer
63 views

How to toggle button on and off with gpiozero?

I can't seem to find a solution of doing this using gpiozero. I've done it using rpi.gpio with add_event_detect and call back to change state but I was under the impression gpiozero is much simpler. ...
2
votes
1answer
33 views

Raspberry pi 3 RFID RC522 Card UID is not same with USB RFID Reader

I'm working with RFID RC522 using Raspberrypi 3B+. I'm following https://github.com/mxgxw/MFRC522-python this package and works like a charm. I can able to read the data from the card, able to write ...
0
votes
0answers
24 views

Connected to the internet but unable to ping

I have a Raspberry Pi 3b+ with a Huawei E3372 LTE USB Stick. I use a mobile simcard in this USB stick to provide it with a internet connection. The problem now is that I can't even ping the IP ...
0
votes
1answer
821 views

Could not open port /dev/ttyS0: Errno 13: Permission denied: '/dev/ttyS0'

I am getting this error whenever I am trying to run this code: import serial from time import sleep ser = serial.Serial ("/dev/ttyS0", 9600) #Open port with baud rate while True: ...
1
vote
2answers
45 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 ...
0
votes
1answer
117 views

Cannot connect to my RPi via ssh

I installed raspbian stretch on my Rpi 3 and it works perfectly using HDMI display. But when I run it using ssh on my laptop. I cannot connect it using the ethernet. My laptop sends the packets but it ...
1
vote
0answers
17 views

sudo apt-get update isn't working / networking problem

I am getting following errors repeatedly upon using apt-get update command : pi@raspberrypi:~ $ sudo apt-get update Err:1 http://raspbian.raspberrypi.org/raspbian stretch InRelease Cannot ...
1
vote
1answer
281 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 ......
2
votes
2answers
36 views

Detect when the rpi3b+ has shut down

I have a pi in an embedded project. When the user turns the instrument off, I want to inhibit turning back on until the pi is done shutting down. I can do this with a timer circuit, but would like to ...
0
votes
1answer
153 views

I think I fried my RPi

I am working on two stepper motors and trying to control them using RPi3(Ubuntu mate) with A4988 motor drivers.I successfully managed to drive the motors with extenal 12V battery source.After ...
1
vote
1answer
237 views

accidently reversed polarity power to Raspberry Pi 3B+

I was trying to make a custom power source to supply power to the micro usb port on the Pi B+ and I reversed the + and - by accident and then smelled something like burned plastic. The SD card doesn'...
0
votes
0answers
13 views

Pi 3 B+, 7" official touch screen and a Sense Hat query

New here, but wanted to ask about the above. My Pi 3 B+ is connected to an official &" Touchscreen display, which uses a double adaptor to provide power to the Pi and scren. This work fine. ...
0
votes
1answer
55 views

use raspberry 3+ and PN532 Itead with i2c

nfc-scan-device uses libnfc 1.7.1 1 NFC device found: error libnfc.bus.i2c error : worte only -1bytes (10 expected) error libnfc.driver.pn532_i2c Unable to transmit data(TX) pn53x check_communication:...
1
vote
1answer
18 views

Pi 7" touchscreen + Chromium in kiosk mode shifted down + right by 10px

I am using a Pi 3 B+ with the Pi Foundation 7" touchscreen for a personal home automation system. The UI is a webpage displayed in a Chromium browser in kiosk mode. Here are my specifics: /etc/X11/...
1
vote
2answers
192 views

Raspbian Lite booting with nov'16 date (causing a disk check every time)

Since last week my Pi begin to take a long time during boot to check its sd card, and if plugged any external devices. At first I thought the SD card was dead, but switching with another, and ...
1
vote
2answers
36 views

RPI Ethernet Gadget Intermediary Theory

I am brand new to these forums so I apologize if I posted this in the wrong place but I had an idea that originated when I heard about the RPI Zero's ability to act as a USB Gadget or HID Device and I ...
1
vote
0answers
24 views

Ubuntu Mate compatibility

A Raspberry Pi3 B+ was outfitted with: ubuntu-mate-18.04.2-beta1-desktop-armhf+raspi-ext4.img which indicates that the B+ is the recommended hardware. That being said, at bootup, the rainbow screen (...
1
vote
1answer
17 views

Send camera video via 3.5mm TV output to video transmitter (5.8GHz)

I have got a Raspberry pi 3 b+, a simple camera connected to it, and a pair of video transmitter and receiver. What I want to do is to send the video signal (the video recorded by the camera) to the 3....
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votes
0answers
24 views

Unable to Connect to Raspberry Pi with SSH

My Raspberry Pi is active on my network and I confirmed that it's online with an IP scanner. But if I run PuTTY (I usually connect through SSH instead of HDMI) and try to connect, it says that the ...
0
votes
2answers
276 views

I have a Raspberry Pi 3B+, I'm running it from a 3.3A 24V LED Driver (Through a Buck Converter). I have a question about the PWR (Red) LED

I'm running a Raspberry Pi 3B+ on a 24V 3.3Amp LED Driver. I'm converting the 24V to 5.1V for the Pi using an MP1584EN DC-DC Buck Converter with a rated output current of 3Amp. I power the Pi though ...
2
votes
1answer
32 views

Pi bluetooth audio: can't get LMS squeezelite audio to BT

I have a Pi 3B+ running Raspbian Stretch. I want to send audio via the built-in BT to a Logitech Audio Adapter which feeds my stereo. I can do this from the command line via either aplay or mpg123 so ...
0
votes
0answers
11 views

Join raspbian in a samba domain

I'm trying for an rpi in a samba domain. I researched a lot but nothing works ... I would ask for a tutorial from you guys or even the link to some that worked. I'll use the same raspbian. I'm ...
0
votes
1answer
530 views

Raspberry Pi 3B+ doesnt play audio via BT speaker

so I wanted to play audio via a bluetooth speaker. I tried it with my Phillips BTM3160 and my Creative iRoar Go. The Pi wouldn't even connect to the Phillips one and on the Creative it plays with the ...
0
votes
1answer
324 views

Raspberry Pi 3 4G Dongle Internet to eth0

I have followed the following tutorial to setup Hotspot on RPi with a 4G Dongle. For 4G Modem i use Sakis 3g Scripts. It works fine. But when I try to connect my PC to the ethernet port of the RPi ...
0
votes
0answers
26 views

Can't send UDP packets

I am trying to send a 4-digit number, that is a result of two HC-SR04 sensors'measured distance, through UDP and according to almost every command and wireshark on my computer, the Raspberry isn't ...