All Questions

0
votes
1answer
35 views

Image cloning issues [closed]

I'm having issues with cloning a pi image. I have two pi's right now running that are near identical. I did this by cloning one of them and then changing the small details of the second. They were ...
0
votes
0answers
19 views

No sound from my RetroPie

Hi I just setup my RetroPie and have no sound from it. My tv works fine in the hdmi slot I am using, any ideas why I am not getting sound from my Pi? I get sound on the video previews of games but ...
0
votes
0answers
19 views

DC biased sine generation on the Pi

I'm trying to make a sine wave generator using a Raspberry Pi. I need an sine wave(1Vpp) with user supplied frequency riding on a 4V DC bias. The SoX package seems useful to generate sine waves and ...
0
votes
0answers
14 views

Changing bluetooth class to act as a hands free device and car audio

Good morning folks, I have been using this tool to quickly configure my Pi2 as a bluetooth audio link to my camper van, it works brilliantly. My question is regarding changing the class of the ...
0
votes
0answers
18 views

FFMPEG video rendering on raspberry pi 3b+

I'm currently planning on making a little GIF making machine. After a button press, the rPi records a 5 seconde video from a 720p USB camera. Then, the rPi should chroma key the video and then convert ...
0
votes
1answer
13 views

Simulation of a CAN network with socketcan (Python) [on hold]

I am using the Raspberry Pi with the socketcan implementation. Everything is working fine with fix values. To get my simulation more realistic I would like to generate random CAN messages to i.e. ...
1
vote
2answers
44 views

Reliable way to play sound (ogg, mp3) in Python, on Pi Zero W

I have been trying to find a reliable method to play sound on my Pi Zero W, in Python. By default, Zero does not have audio output, but I have set up an I2S amp and speaker, following this guide: http:...
-1
votes
0answers
34 views

How to connect a Raspberry Pi 7'' Touchscreen Display on a Intel Nuc

I am using an Intel Nuc in a project. Is there anyway to do a HDMI to DSI connection to the official Raspberry Pi 7" Touchscreen Display.
0
votes
1answer
34 views

How can I use the RPI3 to generate a sawtooth with frequency around 20kHz?

I am trying to generate a sawtooth waveform from the GPIO, the frequency is high, 20 Khz. is pigpio library my best option?
1
vote
1answer
46 views

raspberry pi zero w process load handling

this is my first project with Raspberry pi. i want to make a Testing chamber for growing micro greens(small plants). What this chamber does is following: 1- weigh the the 4 growing pods with load-...
-1
votes
0answers
14 views

Website Won't Connect After Restart

I restarted my dedicated server and now my website will not connect. I figured out it is because Apache won't start. I get the error in the image below: It says at first job for httpd.service ...
0
votes
2answers
28 views

RetroPie won’t start up after I manually shut it down

I just setup my RetroPie and tested out a game. I then shut it off using the power button. When I tried starting it up again it doesn’t go past this screen. I unplugged it for an hour and tried again ...
0
votes
0answers
20 views

A way to synchronise image stream on multiple pis

I am trying to send a sequence of images from a "master" pi to two other pis on the same network. Each "slave" pi will need to receive a different image from the "master" pi but the two images will ...
0
votes
2answers
25 views

First frames of video from Rasp Pi camera have a high exposure

When I record video using the v1 of the Rasp Pi Noir camera the first few frames/second have a very high exposure (very bright) and then it settles down to a reasonable exposure setting. Because the ...
0
votes
1answer
29 views

RPi randomly unreachable over SSH/HTTP

I have a headless Pi running Raspbian with no other peripherals than an ethernet cable attached. It hosts a simple webpage using Apache with some simple PHP that interfaces with MariaDB. I connect ...
1
vote
0answers
30 views

Stream Raspberry pi cam to webbrowser

I am trying to stream my rpi-camera to my webbrowser. I would like to use webrtc. I have tried using (and modifying) this GStreamer WebRTC demos for webrtc using gstreamer. I can successfully stream ...
0
votes
1answer
14 views

PiCamera not Working - not enough resources

I suspected the problem is that another process is hooking to my camera and thus giving me this error. Does anybody have any idea how i can close the other processes? I've tried rebooting, changing my ...
0
votes
1answer
28 views

Raspberry Pi Won't Boot (Only Red LED On)

I have a Raspberry Pi 3B+. For several months it worked perfectly fine, but one day it just stopped booting and only getting to the red LED. I've tried buying a new microSD but the same behavior keeps ...
0
votes
0answers
39 views

Send IP packets between two Arduino or two Raspberry boards

I have two Arduino boards and I want to do a small project with them. I want them the do the following: Firstly, I want to send an IP packet through the network from the first Arduino to the other. ...
0
votes
0answers
49 views
+50

MAX7219 7-segment not working

I am following these instructions to get a simple 7-segment display working: https://github.com/rm-hull/luma.led_matrix My problem is that as soon as one of the 3 SPI Pins are connected the digits ...
0
votes
0answers
16 views

Raspberry Pi Camera to load face recognition trained model located in desktop

I'm setting up a security application to have real-time face recognition on Rasp Pi Camera. The face dataset are gathered using laptop and the trained model are also located in laptop directory. Is ...
0
votes
0answers
12 views

Any difference between using HDMI versus composite for fbcp?

Is there any tangible difference at all between using composite video and HDMI to copy to a TFT with fbcp? It would be done with hdmi_force_hotplug=1 and hdmi_ignore_hotplug=1.
0
votes
0answers
20 views

Raspberry Pi mouse and keyboard not working

So last night I was using my Raspberry Pi just fine but my internet didn't work so i fixed it with sudo apt-get update and sudo apt-get upgrade. This morning I plugged it in and neither the mouse nor ...
0
votes
0answers
15 views

Control Raspberry Pi from Xamarin [on hold]

Hello I am new to Raspberry Pi. I have a Raspberry Pi 3 running Windows 10 IoT. And I wanted to control LED from Xamarin App via Bluetooth. How could I do it ?
0
votes
0answers
28 views

Tensorflow object detection script is being killed by system

I'm trying to run an object detection script using Tensorflow. After running the python script it's being killed or freezes. I can see camera's light is being turned on right before the script stops. ...
0
votes
1answer
25 views

How do I increase the RPi 3 minimum clock speed without using force_turbo?

So I don't want to change my max clock speed, but I want to slightly increase the minimum clock speed at light load from 600MHz to 800MHz. However, if I set these options in my /boot/config.txt/ and ...
0
votes
1answer
19 views

How to display a tkinter window while using a push hardware button to capture images?

I have a project in which involves capturing of images. I have to display a UI while capturing an image if a button is pressed. This is the code. def create_window(self): t = tk.Toplevel(self) ...
0
votes
1answer
18 views

Problems making xrdp work on Stretch

I have purged realvnc-vnc-server. I have loaded xrdp At this point nothing appear but instructions say that the xrdp server is supposed to run automatically in the background. How do I access it?
0
votes
1answer
23 views

How to setup an unprotected Ad Hoc (IBSS) Network and if possible with WPA encryption?

There are several tutorials out there to setup an Ad Hoc network, for example Ad Hoc setup in RPi 3. But how can I do this using systemd-networkd? And all what I've found is using unprotected ...
0
votes
0answers
24 views

enabling Wifi direct (p2p) along with DHCP server

How can I enable WiFi p2p on raspberry pi zero w and have dhcp service running so that other devices that connect to it get assigned an IP address? I am able to configure the dhcp service on the pi ...
0
votes
0answers
17 views

ffmpeg - Video Audio Capture with Compression

I am running ffmpeg script that captures webcam video and microphone audio and then uses video compression before saving the audio/video mp4 file. The script works on my desktop but cause error on my ...
0
votes
0answers
13 views

Motion Project - poor quality

A few words about my camera: pi@raspberrypi:~ $ v4l2-ctl --list-devices Pupil Cam2 ID0: Pupil Cam2 ID0 (usb-3f980000.usb-1.2.3): /dev/video1 pi@raspberrypi:~ $ ffmpeg -f v4l2 -list_formats all -i ...
0
votes
0answers
11 views

Can't set PS3 Eye USB camera as default sound device in alsamixer

When I try to change default sound card in alsamixer to USB PS3 Eye camera (which is detected as USB Camera-B4.04.27.1), I'm getting following error: cannot load mixer controls: Invalid argument I ...
0
votes
1answer
48 views

What is the max voltage that the Raspberry Pi can handle over the USB plug? [duplicate]

I've been trying to make my own lower-cost power supply for the Raspberry Pi (my cellphone wall adapters don't provide clean enough 5V power for the Pi 3B+) with a 12V wall wart I have laying around ...
0
votes
0answers
13 views

Best transport for Flac files to external DAC Throughty Pi [on hold]

I would like to use my RPi 3B+ as audio file transport to an external DAC (inputs: USB, optical, Coaxial). What is the best audio "quality" path?
0
votes
2answers
26 views

Raspberry Pi configuration is not opening when connected via Windows VNC

My Rpi Model 3B+ is connected through my laptop using VNC instead of HDMI and monitor, unfortunately I ran into some problems,I tried making the Rpi Headless by following this video on YT: https://www....
1
vote
1answer
57 views

Patching and Compiling Kernel 4.14.97-v7+ with Realtime Preemption

I need to patch and compile (not cross-compiling) the Kernel 4.14.97-v7+ (Raspbian Stretch) to support realtime operations. However, I did not find the corresponding patch. The folder https://mirrors....
0
votes
1answer
26 views

H-Bridge motor driver with Raspberry pi [on hold]

i am using L298N h-bridge with Raspberry pi to drive my motors. I am using 4 motors and each motor is of 3V and 120mA. But, my teacher has asked me to shift to powerful motors and i have bought 2 new ...
0
votes
0answers
15 views

Is it possible to use Adafruit's Arduino libraries for my Raspberry Pi alone? [duplicate]

I have a MPR121 touch sensor, LSM303DLHC accelerometer & magnetometer, & SSD1306 128x64 display, and I don't have a Arduino.
0
votes
0answers
20 views

How to stream audio/video from Raspberry Pi to Windows PC

I have a Raspberry Pi 3b that I am using as a radio server with a rtl-sdr (Realtec Software Defined Radio). I would like to have any audio coming from the Raspberry Pi to be streamed to my windows 10 ...
0
votes
0answers
16 views

Raspbian remount partitions after some time [closed]

I noticed that after some time Raspbian Stretch Lite (slightly customized) remounts the first two partitions: [ 1454.889661] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null) [ 1454.905023] FAT-fs (...
0
votes
1answer
81 views

Power MOSFET Gate Voltage Threshold Puzzle

I am using the power MOSFET IRF504N. I am not sure if my Rpi's GPIO 3V3 signal can directly input to the gate of the MOSFET which requires 4V minimum. I guess that I don't need a gate driver to shift ...
1
vote
0answers
30 views

Dovecot 2.3 deb package for Raspbian Stretch Lite

By default Raspbian Stretch Lite comes with Dovecot 2.2.27 which does not support BLF-CRYPT password scheme. Does anybody know if there is a repository with Dovecot 2.3 for Raspbian Stretch Lite? ...
0
votes
0answers
17 views

Getting firefox to stop crashing[parrotsec rpi3b+]

I have the rpi3b+ and i can get it to boot to desktop but getting firefox to load an not crash is a chore having firefox uo an running woluld make running the system easier so i could trouble shoot ...
0
votes
0answers
11 views

Local and NAS type music library [on hold]

At the moment I'm using my local music library almost exclusively from my mac, where I need to have it stored for DJ-ing purposes. My phone (an iphone) doesn't have much memory so I usually have very ...
0
votes
0answers
26 views

Hosting a webserver with ngrok

I recently got a Raspberry Pi and want to host a small API to use with a Slack app. My question is if it is OK to host it on my RPi and expose with ngrok only. Is that something that people do? ...
0
votes
0answers
10 views

Is it possible to pair with lge magic controller via bluetooth

I have a bluetooth smart tv controller, that is LG AN-MR500, I have been trying to connect it as a pointer for my raspbian system, I could connect it without pairing, But i couldn't make it work. ...
0
votes
0answers
10 views

Wireless issues - interfaces randomly assigned

I have a RP3B+ with a Kali Pi build and am having some newbie wireless issues. I have a Ralink RT5370 that I'd like to enter monitor mode on boot, but wireless interface assignment is inconsistent on ...
0
votes
2answers
37 views

WEP WiFi Hotspot

So I want to use my DS online again, and what I need to do is get a router with WEP seurity, or a router without security. So I decided to use my Pi 3 B as a WiFi hotspot. But all the stuff I find is ...
0
votes
0answers
18 views

What might be causing “Failed to open ALSA device” errors when using a DAC board?

The equipment I'm using: Raspberry Pi Zero W Allo BOSS DAC board Volumio music player software official Raspberry Pi PSU I've tried more than one official Raspberry Pi PSU as well as other PSUs. ...

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