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5 views

OPUS audio files not seen on OSMC 2019.04-1

My OSMC 2019.04-1 install on a RPi2 does not list, and hence does not play, any .opus audio files from my DLNA server. Other audio formats like .mp3, .flac, .m4a and .ogg are listed and do play fine. ...
1
vote
1answer
65 views

How do I build Qt's mysql-plugin on Raspbian Buster

I try to build the MySQL plugin on a Raspbian Buster with C++ and Qt 5.12.4. Building Qt itself worked fine by following this tutorial: https://www.tal.org/tutorials/building-qt-512-raspberry-pi ...
2
votes
0answers
49 views

Raspberry PI infrared remote

I have been trying for the past week to make a simple system to switch my air conditioning ON/OFF based on raspberry pi. I have my IR VS1838B infrared receiver, and a small circuit build out of a ...
0
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0answers
25 views

Control Raspberry Pi Zero via router

I have a Raspberry Pi Zero, non-wireless connected via USB to my router. I have Raspbian Jessy Lite installed on it. Is there any way to use my routers USB port to communicate with the Pi wirelessly?
0
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0answers
30 views

Performance of OS install on SD vs USB 3

I was wondering if I should think about installing the OS on a USB 3.0 stick and using the USB 3.0 port rather than the Class 10 Micro SD card to enhance read/write speeds. Is there a performance ...
0
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0answers
16 views

Raspberry Pi 3b+ black screen after start

My Raspberry Pi 3B+ hat the problem that VNC can't display the desktop. SO I connected it to a display and I had a black screen. I can boot the system and can see the normal boot screen (Press "SHIFT"...
1
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0answers
19 views

HDMI @ 1920x1080 and 3.5" TFT @ 640x480 Retropie

Does anyone know how I can set 2 different resolutions? Like have my HDMI @ 1920x1080 and 3.5" TFT @ 640x480. So that when my tft is by itself it displays the proper resolution and when it's hooked to ...
2
votes
1answer
112 views

Pi can't find 5th DS18B20

I am new in raspberry pi. In my research project, I would like to monitor ground temperature at 60 points. My team decided to set a monitoring system using raspberry pi. As a preliminary test, I ...
0
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0answers
29 views

I need help getting python 3

How do I get python 3 on the programming section on the main menu. I have tried watching multiple videos but I can not find anything that works
0
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0answers
19 views

Raspbian boot options: Desktop autologin

I was installing dlib to my raspberry pi 3b+. I changed the swap file size from 100mb to 1024mb in the "/etc/dphys-swapfile" file. After this, I changed the boot menu option to directly start the ...
1
vote
1answer
50 views

Running Hologram cellular network from startup issues [cannot run on rc.local or .bashrc]

I’m playing around with the hologram Nova cellular USB kit and I’m trying to create an automatic connection using the /etc/rc.local file. Hologram uses it's own way of connecting to a ppp0 network ...
4
votes
1answer
40 views

gcc does not compile code that compiles in 'as'

I'm trying to learn assembly using the raspberry pi. I have code that compiles using as but will not compile with gcc. I thought that as was the backend for gcc assembly so I'm confused why it is not ...
5
votes
1answer
205 views

Automatically Create Hotspot if no Network is Available

I want to automatically create an access point, if there is no network found, so that I can connect to my Raspberry Pi everywhere. If nobody is connected to the hotspot for a while it should search ...
0
votes
2answers
21 views

ssh in local LAN: works with IP, but not by name

On a local LAN, I am trying to ssh into a freshly installed Raspberry Zero WH, by host name. I am connecting from an Ubuntu box. The Rasbperry Pi does boot, and connects to the Wifi. I can see it in ...
0
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0answers
18 views

Audio noise generator

Is there a package or hardware for a Pi that will generate real audio noise ie noise whose average over time doesn’t tend to a fixed value. White noise won’t do, since it’s average tends to zero.
0
votes
1answer
55 views

SSH does not work on Raspberry Pi 3

What is the magic required to make SSH work. I have booted into my Pi and enabled SSH under the settings. I know the IP address of my Pi which is static, I have tried on Windows with Putty and via ...
0
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0answers
26 views

How can I mount a speaker on to a Pi so that it is light enough for it to be mobile

Can I mount a speaker on a mobile Pi robot together with a suitable power supply? Ideally I’d like the Pi to follow a fixed route while emitting a fixed repeating tone.
1
vote
1answer
44 views

Raspberry Pi 3B+ no wifi interfaces when setting up for first time

I have followed the instructions to create my SD card and boot it on my Pi. When creating the SD card I have added the ssh and wpa_supplicant files. During the initial installation at no time am I ...
0
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0answers
18 views

Simulate a mouse click in python tkinter

I have a tkinter GUI running on a Pi 3B+ with a 5" tft touch screen display. I am writing my own touch screen driver. The GUI works when I mouse click on a button that is bound to Button-1. self....
0
votes
1answer
22 views

NOVA USB touch panel is working with raspberry

I need to use one touch panel for my LCD monitor 32 inch, so i found this kind of NOVA USB touch panel : in the description it said it is working with Linux OS and working without needing to any ...
0
votes
1answer
24 views

Raspberry pi 3 Whatsapp

I installed whatsapp on raspberry pi 3, but can't find information how I can use it in python script. I want to use it for door open/close python script. I have script working with email, but email ...
4
votes
1answer
55 views

How to Monitor GPIO Input Indefinitely Without Recursion

I actually joined StackOverflow to ask this question because I wasn't sure it was RPi specific, but as I was thinking about how to form the question, I realized it might be GPIO specific (for some ...
1
vote
1answer
46 views

Startup files on raspberry pi 3

I have 4 python scripts running continuously. How I can open them in separate windows on startup? I need see the terminals when it's booting up. I tried rc.local: it's working but I can't see the ...
1
vote
1answer
35 views

a python GUI application to display some measured value (with Raspberry Pi)

I am developing a GUI (with python tkinter) application for a measurement system with Raspberry pi. I made the GUI and the code to do the measurement. But my question is how to link them together. ...
0
votes
0answers
74 views

Xorg not working after upgrading to buster

After switching to Raspbian Buster and rebooting RPi3 B+ boots into a shell. (I use the GUI so this is a bit odd) After typing in startx I get this error (I cutout a bunch of junk): (EE) no screens ...
0
votes
3answers
44 views

Automatically Connecting to Raspberry Pi 0 to a wifi without Screen and SSH

I have a raspberry pi 0, but don't have/don't want to connect to a screen/hdmi/SSH. I can plug my pi's sdcard into my laptop and access the raspbian installation files, so is there a way I can ...
0
votes
1answer
70 views

Can I plug my SD card from Pi 3 into a Pi 4?

If I upgrade the OS to buster on an OS disk (SD card or USB stick) on my pi 3, will it work if I boot a pi 4 off that?
1
vote
2answers
88 views

How to read Wiegand serial data? (Rx/Tx)

Ok, I am losing my mind... Why is this so damn difficult? Current situation: - 12V Access control device that is connected like this i.e. Wiegand D0 to Tx and D1 to Rx, with voltage dividers. - ...
0
votes
0answers
26 views

gpsd/gpsmon on R-Pi 3 re-activates disabled NMEA messages?

I have a Raspberry Pi 3 with Adafruit's Ultimate GPS Pi Hat. I was able to successfully install gpsd and chrony. I am now getting NMEA and PPS thumbs up But I have a weird issue. The Ultimate GPS ...
1
vote
0answers
22 views

picamera error the second time I run camera.capture(output,'yuv')

I'm getting an error the second time I run camera.capture(output,'yuv'), what am I doing wrong? my code: from time import sleep from picamera import PiCamera from picamera.array import PiYUVArray ...
1
vote
2answers
63 views

Read ip camera stream video on python using opencv3

I installed opencv3 installation link on my raspberrypi 3 and i've tested this, everything is ok, but when i try to read the ipcamera video stream encountered this error self.stream = cv2....
2
votes
0answers
45 views

Raspberry Pi 3 model B wifi monitor mode

Q. Has anyone managed to configure a raspberry-pi 3 b for monitor-mode? I have an external (Edimax) WiFi USB dongle also, which works with my PC in monitor mode but does not work with the raspberry ...
1
vote
1answer
26 views

Connect 2 SHT25 to measure 2 sets of temperature and humidity at 2 different sites

I want to connect 2 SHT25 to measure 2 sets of temperature and humidity at 2 different sites . How should I connect it to Raspberry Pi 3. Thanks for your help
0
votes
0answers
19 views

is there a way to minimise the effect of the Pi on the Sense HAT's temperature sensor?

Is there a way to minimise the effect of the Pi on the Sense HAT's temperature sensor? I cannot seem to reduce it from mid to high 30s deg. C. Or do I really need a sensor that is external to the ...
0
votes
0answers
17 views

Maximizing the number of active BLE/Bluetooth connections

I would like to connect around 30 smartphones via BLE to a Raspberry PI enabled system, however, googling around showed that it supports up to 5-7 active connections only. It is expected these 30 ...
2
votes
1answer
156 views

Is the Raspberry Pi 4 vulnerable to the Spectre exploits?

Now the new Raspberry 4 has moved to ARM A72 cores, it's vulnerable to the spectre issues according to ARM. Processor Variant 1 Variant 2 Variant 3 Variant 3a Variant 4 Cortex-A72 Yes Yes**...
0
votes
1answer
29 views

Having a sound clip play and be looped as long as the button is pressed down and stops as soon as it is released

I am able to have the script running when I have the code set to pygame.mixer.music.play but if I do pygame.mixer.music.play(loops=-1) I get an error stating CallbackSetToNone: The ...
0
votes
0answers
16 views

How can I custom set my 7'' touch screen to the resolution of my preference (custom)

I have an LCD Display that is 7" but I want to set the resolution to 1024x600 but I can find a way how
0
votes
0answers
21 views

keeps showing “^@” repeatedly

I boot just fine but when it is ready for login it repeatedly shows "^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@..." forever. Please help me fix this. Thanks!
2
votes
1answer
34 views

wpa_supplicant + dnsmasq: Fallback to AP mode if no wifi connection

I'm trying to figure out how to configure wpa_supplicant to: First try to connect to a selection of preconfigured wifi networks as a DHCP client, and if that fails Set up a wifi access point using ...
0
votes
0answers
12 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!
1
vote
1answer
19 views

is the Raspbian NTFS implementation journaled?

I read somewhere that Raspbian NTFS implementation is not journaled, but I didn't find confirmation that it is true. If it is true there is a way to have it journaled? I'm using it on a USB stick ...
0
votes
1answer
26 views

DS3231 doesn't update its internal time?

UPD: with another chip of the same model RTC works just fine, presumably that the chip was broken/damaged. I installed DS3231 RTC clock ( which is detected as DS1307 for some reason). My config.txt ...
0
votes
1answer
54 views

SSH into Raspberry Pi connected to OpenVPN

I want to be able to remotely ssh into my rpi, while my rpi is connected to PIA (via OpenVPN). I can ssh into the pi from my local network while the pi is connected to OpenVPN, and I can also ssh into ...
1
vote
0answers
27 views

install eclipse luna on raspberry pi 3

I'm new here and I want to ask if there is any way to install eclipse luna or higher on raspberry pi. I'm using Rasbian and the already installed Eclipse (3.8) sudo apt install eclipse doesn't ...
0
votes
0answers
36 views

What came out of the team up with Google AI for the rpi 4?

I remember back in 2017 I had read several blog articles such as this one where it was mentioned that the rpi foundation had teamed up with Google and that we could expect Google AI for the raspberry ...
0
votes
2answers
48 views

No activity LED after shorting a GPIO to ground : dead or fixable?

This is a model 3B+, due to some under-power warnings on the screen I was testing the actual voltage between the 5V and ground pins on the header, but managed to touch pin 40 (SCLK) to pin 39 (GND) ...
0
votes
2answers
67 views

What happens to the GPIO voltage after shutdown?

I don't have a Raspberry Pi laying around at the moment and I would like to detect if my Raspberry Pi is shuted down. My Idea is that maybe after the Pi shutted down the Voltage at the 3V3 pin will ...
0
votes
0answers
18 views

Appearance Settings - Set Defaults, changes what?

In Raspbian, in 'Preferences > Appearance Settings > Defaults', there are buttons to set defaults for small, medium and large screens. Can anyone tell me what specific settings they actually change? ...
0
votes
0answers
24 views

Run PostgREST on armv6

I'd like to run PostgREST on an armv6 raspberry pi. unfortunately, that's not officially supported. best I could find is an armv7 binary (unofficial), and generic instructions for cross-compiling – ...

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