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1answer
37 views

How to fix link error of OpenVINO sample on Raspberry PI

I have raspberry pi 3 B+ with Raspbian Jessi on it it. I am trying to setup it to run OpenVINO applications. I was following the installation steps as per the documentation and it went fine. When I ...
1
vote
1answer
19 views

Migrating MariaDB from Stretch to Buster

I am currently in the process of migrating my ownCloud from my old Pi 3B to a Pi 4B. On the 3, I made a backup of my MariaDB with mysqldump: mysqldump --single-transaction --routines --triggers --all-...
1
vote
1answer
37 views

Raspberry 3+ b and two external usb drives: lack of current

I've encountered the following problem: when I connect 1 external usb hdd to my Pi, everything works fine. But when I connect second one with the same characteristics, both drives are not usable. I ...
0
votes
1answer
45 views

How to use this IR Sensor as LIRC receiver for Rasberry Pi [closed]

So, recently I went to an electronics store to buy an IR Sensor, so they gave me the next one: IR Phototransistor NPN Then I went online to check how to build this, and to my surprise, I've found ...
1
vote
1answer
58 views

Raspberry Pi 4 Wifi disconnected after change screen resolution

I'm having some problems with Raspberry Pi 4... The wifi works normally when I use 1920 x 1080. But when I change the resolution from 1920 x 1080 to 1280 x 720, the wifi suddenly disconnected and ...
2
votes
0answers
29 views

How can I reconfigure the UART on the fly?

I have a Pi Zero with Raspbian which I'd like to use as a logger device with WiFi (it's not a W, I'm using an external WiFi stick). I need the UART to communicate with a microcontroller but sometimes ...
-1
votes
1answer
48 views

Turn GPIO pin to 5v pin

Is there a way to change GPIO function to use it as 5v power pin. Because all of the power pin used for the Touch Screen.
1
vote
1answer
32 views

Program Crashes on Systemd (systemctl), Works Fine Running Manually

I have a program (c program, run using a shell script) that uses sockets to connect to a server, retrieve data (on an interval) and (based on that data) power an LED matrix. When I run this program ...
0
votes
1answer
42 views

Duplex communication via bluetooth - in C++ code [closed]

I have a working C++ code , partially converted to class, passing single (text char ) message form client (Rpi) to server (PC). I have used a composite ( fancy work for hack ) of many C/C++ code ...
3
votes
1answer
373 views

Powering difference between different Raspberry Pi 4 models

Raspberry Pi 4 has three models which have 1GB, 2GB, and 4GB of RAM. Is there any difference between these models for powering?
1
vote
0answers
39 views

AC Frequency Monitoring

There are multiple hardware solutions to do amp/current monitoring, but I cant seem to find one to do AC Frequency monitoring. Anyone have a pointer to board that can handle line power and return line ...
0
votes
1answer
28 views

rtl871xdrv driver not working

So I'm trying to get hostAPD to run on my raspberry pi and after a full day of trying and researching, I'm just gonna ask the question here. When trying to start hostAPD, it displays the message ...
2
votes
0answers
52 views

How do I power an IR LED signal that is 50 feet away?

I'm building an IR blaster with an LED that will be wired 50 feet away from the circuit. I'm going to use this 18 gauge wire to extend the LED connection. I'm using a GPIO pin connected to a BC547b ...
-1
votes
1answer
72 views

Media Server on the Pi with Lan connection to TV

Is there a way to set up a media server on the Pi for streaming Video Files, and have a TV connect to it over Lan? The TV could, in theory, access a media server that is running on the router, I am, ...
0
votes
0answers
46 views

Video player for Raspberry Pi 1/2/3/4

My project, unfortunately, was affected by the release of the raspberry 4 and buster. My script shows on my clients' tv advertising videos with subtitles resized and positioned ad hoc and with a fixed ...
0
votes
0answers
39 views

Raspberry Pi B+ doesn't boot after upgrading the os

Today I upgraded the Raspbian os from version Stretch to Buster with sudo apt-get dist-upgrade Now I can't boot Raspbian. Only a black screen appears. When I try to load the different os, like ...
0
votes
0answers
38 views

USB PCIe with RPi 4 for Graphics Cards?

So I found these USB PCIe adaptors on Amazon for a decent price. Given the new USB 3 capabilities of the RPi 4, would it be possible to use these to connect an older (not modern) graphics card like an ...
0
votes
1answer
65 views

GPS (USB) with NTP has a consistantly large offset and high jitter from public NTP sources

I have a Raspberry Pi Model B Rev 2 (BCM2835 rev 000e). Connected to it is a USB G-Mouse GPS receiver - which is really just a u-blox 7 GPS receiver. I've had it running for about 15 hours now and it ...
0
votes
0answers
29 views

How to enable user/ipc/network namespace sandboxing on for Firefox 71 on Ubuntu 19.10 arm64?

System: Raspberry Pi 4B, 4GB Linux 64bit, uname -a: ubuntu 5.3.0-1014-raspi2 #16-Ubuntu SMP Tue Nov 26 11:18:23 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux. Firefox 71.0 64bit "Mozilla/5.0 (X11; ...
1
vote
0answers
22 views

Is the algorithm of processing raw data from PiCamera to get the JPEG that raspistill obtains opensource?

I'd like to learn how exactly the raw data from PiCamera are processed by the system to yield the final JPEG that raspistill saves. Is this algorithm available as opensource code? Or is it hidden in a ...
1
vote
1answer
38 views

Raspberry Pi Low Power warning when connecting without USB cable

I'm trying to connect power to Raspberry Pi 3B+ directly without USB cable, as in this question. I've tried both connecting the 5V and GND extension pins as in this answer and connecting to PP2 and ...
0
votes
0answers
27 views

How to enable kiosk mode for a user other than “pi”

I am able to run the raspberry-pi in kiosk mode for 'pi' user in auto-login mode by editing the autostart file in /home/pi/.config/lxsession/LXDE-pi/autostart. I would like to do the same with the ...
-1
votes
0answers
28 views

Cant read RFID card consistently from EM18 + Raspberrypi

I connected EM18 rfid reader to RaspberryPi. Cards get read sometimes and sometimes not. In other words it is not read in a single attempt every time. Though after a successful read output is correct ...
2
votes
1answer
100 views

Share USB tethered phone to Raspberry Pi 4 LAN port

I want to share my phone data by connecting to my pi4 running buster. I wish the data to pass through the ethernet which has a router connected to it. The router has both wireless and wired ...
0
votes
0answers
39 views

Untrunc / repair mp4

I have been trying all day to get untrunc installed on my Raspian (Pi 4) but have not made any headway. https://github.com/ponchio/untrunc is what I've been following. After that compile step, I ...
3
votes
3answers
86 views

Delete and modify not supported smb external drive (exfat)

I run SAMBA 4.9.5 on my raspberry pi 4 and share a folder on my external hard drive(exfat as fs). It worked all fine until I want to remotely delete or modify files on it. I cannot delete or modify ...
0
votes
1answer
38 views

end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,6)

When I attempt to boot my Pi into a terminal I get this error, please tell me I can fix this somehow. [ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,6) ] I tried ...
0
votes
1answer
44 views

What is the proper calculation of duty cycle range for the sg90 servo?

In all specs of this servo that I can find there is a range of 1000-2000ms of duty cycle, for 50 Hz frequency, for the full range of motion. For example: http://m.zonesutech.com/Content/upload/...
4
votes
3answers
146 views

Raspberry Pi Cluster for Computation

I am new to Raspberry Pi's (as well as this stackexchange) and would like to use them to learn how to build a small cluster. (Currently using this guide: https://medium.com/@glmdev/building-a-...
0
votes
1answer
42 views

Issues with updating screen resolution on a headless pi using VNC

Updated my screen res to 1080p using sudo raspi-config. After a reboot, VNC is still showing it as the same old small box. I have disabled overscan but can't really find any information on this issue....
0
votes
0answers
16 views

Seek Compact. Easiness to configure and use

Hello everyone and happy new year. I'm in need of a thermal camera for my project. I am considering buying a FLIR Lepton but just found out that you can use a Seek camera with the Pi as well which ...
0
votes
1answer
36 views

LXDE crashes randomly

I've been using this Pi for a while now, and only recently this problem begins to happen: I'm doing some programming (Geany, lxterminal, pcmanfm are running) and then suddenly the icons in lxpanel ...
1
vote
0answers
17 views

Infrared Camera Project: Is the following possible?

first post here/new raspberry pi user. I'd like to use the raspberry pi with the FLIR infrared camera in order to create a display-less security camera that will set a wireless alarm if a temperature ...
1
vote
1answer
27 views

RPi 4 First Boot: Blank TV Screen and SD card become “RCOVERY” with MBR, READ OLNY

It's my first experience with the Raspberry Pi. I bought RPi B 4 with 2GB RAM, before starting off I go through RPi videos, tutorial and finally loaded Noobs into 16GB Sandisk memory card. I plugged ...
1
vote
1answer
47 views

Control Power via USB

Like in similar questions, I have my Pi on my TV and it currently draws power from the TVs USB. Fingers crossed, it currently works, but surely the Pi should have a better supply. Now, the good ...
0
votes
0answers
16 views

How to add the hfp/hsp profile based speaker for input (speech recognition)and output simultaneously?

I m trying to make kinda type of assistant out of my raspberry pi 3 b+ model and so bought this Speaker . So that I can use it to give audio input as well as get the output at the same time . But I'm ...
5
votes
3answers
235 views

Serial output in case of no OS

I am using the raspberry pi 4. I have no screen connected to the raspberry pi, I do everything trough ethernet cable. I am currently changing kernels and thus sometimes I cannot boot, since I created ...
0
votes
0answers
13 views

keyboard problem

When I first plugged in my raspberry pi 4 it came with a german keyboard, not an English one. I have got the English one now, but whenever I type with it, the letter E randomly gets put into the word ...
1
vote
1answer
32 views

Light monitoring and alerting for a few RPIs

I'm setting up a set of 5 Rpi 3As and an RPi4 as a "master" for the fleet. I want to monitor a few things on the Pis (cpu/ram/disk and some REST endpoints) and access a web UI to see the state of the ...
-1
votes
0answers
38 views

My USB wifi adapter won't connect to the internet

I have a USB wifi adapter connected to my raspberry pi, the Pi knows its there, using lsusb I can see the wifi adapter and I have configured the /etc/network/interfaces file to be the right network ...
2
votes
1answer
52 views

5v/12v power source/submersible water pump/RPI/relay. What kind of combination is suitable?

I am using a 12v DC water pump with a 20 l/min flow rate, a raspberry pi 3B and a distance sensor. I would like to use a relay and an external power supply to control turning on/off the water pump. so ...
0
votes
1answer
27 views

how to Mount and Unmount SD card( Specific partition in SD Card)?

I created a partition under my sd card. All main partition is shown here. Now " C44D-6FA2 " use for USB OTG Flash Drive. Now whenever I add any file in this USB flash drive, it is not showing under ...
1
vote
0answers
36 views

Is there a way to stop Pyaudio and omxplayer from printing info

I am trying to create an application which uses wakeword with snowboy and speech recognition using the speechRecognition library in Python. When I start my scripts, when say I my wake-word - 'Python'...
0
votes
0answers
16 views

Can I use a Pi Sense HAT and motor HAT together?

I have a Raspberry Pi 4 and I'm wondering if it's possible to use the sense and motor HATs together ( preferably stacked )? These are in the following links: https://thepihut.com/products/raspberry-...
0
votes
0answers
38 views

How to increase mic input volume?

I recently bought a usb soundcard and a 3.5mm microphone for my raspberry pi 4 to use for a python project for speech recognition where I want the pi to be able to hear to conversational volume voices ...
0
votes
0answers
43 views

Force Windows 10 Login after Wake-On-LAN from Raspberry Pi

Trying to set up a Raspberry Pi as a Steam Link device for my PC. I have both devices connected via ethernet to my router, and I've configured the PC to allow Wake On LAN. I managed to get the Pi to ...
0
votes
0answers
74 views

Rock Pi and temperature sensor

I have Rock Pi 4 B 4GB. Kernel for now is: Linux rock 4.4.154-95-rockchip-gd2ab1f26e1b3 #1 SMP Mon Oct 21 06:42:35 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux I also have DS18B20 temperature sensor ...
1
vote
2answers
48 views

Is RPi 4B protected against GPIO shorting?

I read that a Pi 3's +5/3V GPIO pins when they contact, potentially frying the whole computer. Does this still happen/what's the risk of this happening on a 4B? Is it "protected" in any way?
1
vote
1answer
32 views

Transmission-daemon startup script

I tried to delay the startup of transmission-daemon by changing the /etc/init.d/transmission-daemon to use "sleep 600" in the beginning. But it is still starting right after raspberry is turned on. ...
1
vote
0answers
30 views

“Attribute Error”- How to display data from distance sensor on lcd display?

I am trying to incorporate LCD display features with the codes that are already written for the sensor. "lcddriver.py" is in "lcd". "distance.py" contains codes for my distance sensor. This is the ...

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