Questions tagged [pi-3b+]

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

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3
votes
2answers
360 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 ...
1
vote
2answers
983 views

Raspberry Pi “Temporary failure in name resolution”

After many hours of googling and testing for a solution, I am stuck. I would really appreciate some advice. Situation - I have (5) Raspberry Pis 3B+ (RP) at various customer locations and I want to ...
2
votes
1answer
928 views

Swapping between wifi client and access point?

This question is an extension of the information on this post. This question looks the same as this one but it is not. I am using systemd-networkd. I successfully followed the instructions in the ...
6
votes
4answers
3k views

RPI3B+: What are the four components below the HDMI connector called?

I am trying to get the following RPI3B+ to work. Apparently the machine is booting ok, since I can see it using nmap on my local network: # nmap 192.168.0.23 Starting Nmap 7.70 ( https://nmap.org ) ...
1
vote
0answers
96 views

Collect video from camera and display it in a navigator

I'm trying to collect live video stream from a camera. The camera output is analogic so I'm using an Analogic to USB converter connected to my Raspberry. I'm looking for a good solution to collect the ...
0
votes
2answers
103 views

How to enable BlueTooth when TX/RX already being used

We have the TX/RX Gpio already being used on the Raspberry Pi 3B+ . I believe the onboard Bluetooth uses the same ? How can I get bluetooth working when our TX/RX is already being used. Right now I'...
1
vote
0answers
110 views

Black screen with cursor after configuring LXDE-pi/autostart

I've seen this post that describes the same problem I am facing, but the use case was somewhat different and the OP never updated the post with their solution. I am attempting to run Synergy at boot, ...
-1
votes
1answer
503 views

Unable to locate package libdbus-1

So, I'm trying to run the following code on my Raspberry Pi 3b+: sudo apt-get update && sudo apt-get install -y libdbus-1{,-dev} And I get the following result: Unable to locate package ...
2
votes
1answer
283 views

1-wire device not detected

I'm having trouble getting a 1-wire sensor to be detected on my Raspberry Pi Model 3 B+. The sensor is this temperature and humidity sensor. I have wired the red wire to 3.3V, the black wire to ...
4
votes
1answer
296 views

Can't SSH into RPI over WiFI

The way I setup the RPI is through sharing my laptop's connection via ethernet. I enabled SSH. Now I am trying to SSH from it without being hardwired to it the way I set it up and the connection keeps ...
2
votes
1answer
362 views

Remote start a portable generator

I'm looking for a generator, one that can run my gear for at least 8 hours but also can be remote started. It seems either you get a portable generator, or a fixed generator with WiFi. https://www....
1
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0answers
135 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 ...
3
votes
0answers
408 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-...
2
votes
1answer
165 views

Compiling GCC 8.1.0 on Pi64

I have installed Pi64 from here. I want to compile GCC 8.1.0 as per the instructions here. However the text of the article sets the target architecture to --with-arch=armv6 which is 32bit? Should/...
3
votes
1answer
679 views

POE without the Rpi Hat?

I have a raspberry pi 3b+ with the 4 PoE connectors. How can I power the Pi with Ethernet without buying the PoE Hat? Is there a link to a schematic for the PoE hat? I need a different board on top of ...
0
votes
0answers
14 views

How to get my font to work

I just downloaded a font and it's a .ttf file but it isn't working, I was hoping someone could help me figure out what's wrong. Thank you!
2
votes
1answer
99 views

CE1 not going low for pigpio.spi_open() with flags

I'm attempting to modify joan's test script (https://raspberrypi.stackexchange.com/a/44320/42126) for an RPi SPI master to communicate with an Atmega328P slave. I cannot change which GPIO pins I have ...
1
vote
0answers
193 views

Using the MCP7940N RTC with the Pi 3B+

I have a breakout board with the MCP7940N RTC on the Pi 3B+. How do I get this to work. I've been following this guide but don't seem to be getting anywhere. In my /boot/config.txt I have added ...
0
votes
0answers
81 views

ttyusb don't appear in raspberry

I work with a LTE modem. Normally when I plug it, ttyUSB0/ttyUSB1/ttyUSB2/ttyUSB3 appear. Suddenly it stops working and I don't know what happened. Why does it happen? Thank you in advance Update: ...
2
votes
0answers
66 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 ...
-1
votes
1answer
41 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 ...
1
vote
1answer
148 views

which python version supports rpi gpio libraries?

im working on raspberry pi 3 b +model i installed noobs on it ,but when i try to install rpi gpio libraries it shows their is no module named rpi gpio it is showing ,and when i want to see which ...
1
vote
0answers
18 views

Is raspberry able to retrieve/store some n time prior a trigger with multiple cameras?

I came across a project idea which I think would demand a lot from a raspberry pi and arduino hardware capabilities. From my understanding, a master raspberry could be used to trigger n slaves through ...
1
vote
0answers
54 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 ...
1
vote
1answer
585 views

H.265 playback. CPU usage: 385%

Brand new Raspberry Pi model B+ with heavy cooling system. Trying to play a 1920x1080p h.265 video. VLC/ffplay shows 1 frame/minute, impossible to watch. CPU usage is reported 385.5% by top. Is it ...
2
votes
2answers
4k views

Raspberry pi 3 b+ and 7" touchscreen over poe

I have an issue, i want to power my pi and 7" touchscreen over poe but the raspberry pi poe hat supplies only 2.5 amp. 7" touchscreen requires 2.5 amp and rpi 3 b+ also requires 2.5 amp so i am in ...
2
votes
0answers
134 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 ...
2
votes
0answers
83 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 ...
0
votes
0answers
23 views

Waveshare GSM HAT and RPi camera

Does anyone know, if the waveshare gsm hat affects the camera unit on the raspberry pi? Because if I plug the hat on the RPi, then I can't use the camera.
1
vote
2answers
601 views

Imaging Raspberry PI via PXE

Apologies if this has been answered, tried searching but didn't find exactly what I was looking for. I have 5-10 Raspberry PI's coming in at a time that I need to load Rasbian (jessie) on. Currently I ...
2
votes
1answer
555 views

Problem: Tor Router with a Wifi to Ethernet Bridge

I configured my Raspberry Pi 3 Model B to route all traffic from wlan0 to eth0. This works for me and I can connect my RPI to a Wifi-Network, connect my computer with the RPI through ethernet and I ...
1
vote
0answers
212 views

raspberry pi3 + fingerprint

I'm looking for a way to connect fingerprint scanner with raspberry pi3 using python. I'd like to use only gpio or hat (not usb) interface. I'm searching for a while without figured out, so I've ...
1
vote
0answers
42 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
0answers
67 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(...
1
vote
1answer
144 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
votes
0answers
181 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 ...
1
vote
1answer
567 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;...
2
votes
1answer
396 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 ...
0
votes
1answer
68 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
votes
0answers
215 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 ...
2
votes
1answer
186 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
0answers
843 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
vote
2answers
1k 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
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 ...
2
votes
1answer
387 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
32 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
3k 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
79 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 ...
1
vote
0answers
120 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 ...
2
votes
2answers
419 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 ...

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