All Questions

0
votes
0answers
4 views

Trying to connect vnc server from my Pi 3 but getting blank screen in vnc viewer

Hey I have setup the VNC server and running chrome there and want to see the same view here in my RaspberryPi3. But I am getting the blank screen. I have done the same setup in my laptop it is ...
0
votes
0answers
10 views

Execute Python-Script on MotionEyeOS

I've recently created a Card with MotionEyeOS for the Raspberry Pi. I've tested motioneyeos already on DietPi and the normal Raspbian, but it didnt worked with the original Raspberry Pi-Camera. In a ...
0
votes
1answer
12 views

PWM in raspberry with L293D

maybe this ask is repeated but i need solve this special situation, i have an arm robot with 3 Freedon deegre, i want to control position of each motor with a raspberry pi 2 and L293D like a motor ...
2
votes
1answer
13 views

Bluetooth discoverable mode is automatically turned OFF

I want to set up the Bluetooth on boot so I can connect to it whenever I want with a device which is not trusted by the Raspberry Pi Bluetooth. I set up the Bluetooth on boot on my Raspberry Pi this ...
1
vote
0answers
14 views

How fast can GPIO pins toggle on the Pi 4?

Benchmarking of the Pi 4 using the Python GPIO Zero library shows a significant increase in the frequency of toggling a GPIO pin on and off compared to previous models. This result is contributed to ...
1
vote
0answers
17 views

Safe cut power supply from raspberry

I want to cut safe the power supply from the raspberry with a relay connected to the gpio. I know how to connect to relay to the board but.. When the relay turn off the power line will be cut off to ...
1
vote
0answers
14 views

Method for piling three peripherals on one pi

I'm working on my first pi project, which is intended to use the following three peripherals: GPS -- using UART (pinout) eInk -- using SPI (pinout) battery power supply -- using I2C (pintout on p. 15 ...
0
votes
1answer
11 views

connection failed in apt-get upgrade

I am using Raspberry Pi 3 Model B, and installed raspbian-buster on it. sudo apt-get update works well. But sudo apt-get upgrade shows connection failed. Err:29 http://archive.raspberrypi.org/...
0
votes
0answers
15 views

Wearable motion capture suit

I am trying to find the simplest way to connect multiple 15 IMU sensors (ICM-20948) to a wearable suit.The thing is that they all have fixed addresses. The solutions I found so far are: Using a ...
0
votes
0answers
29 views

New Pi Model 4 hangs at most boots

Greatings all Pi eaters! Got the latest Pi "Raspbian Buster full" on a 16 gig SD card but it hangs apx 50% of the time at boot right after log messages disappear. One monitor has a valid HDMI signal ...
0
votes
0answers
16 views

The docker repository does not have a release file

I'm trying to install Docker on a Raspberry Pi 3. I followed the instructions and ran: curl -fsSL https://get.docker.com -o get-docker.sh sudo sh get-docker.sh When I do this, I get the following ...
0
votes
1answer
29 views

I think I fried my Raspberry Pi but I'm not sure?

I was making connections from my Raspberry Pi to a Relay Module. While I was running some sample code, I noticed that after I had terminated the program i was still getting a high CPU usage (around 60%...
0
votes
0answers
10 views

Mini UART Bluetooth PAN on Pi Zero W

I followed these instructions to enable a Bluetooth PAN on my Raspberry Pi Zero W. It mostly works fine, but it occupies a serial port. I need UART (mounted at /dev/ttyAMA0) for serial communications, ...
0
votes
1answer
15 views

Pausing code execution till a button is pressed

I'm trying to pause code execution till a button is pressed and this is what I came up with. I have not tested this but can anyone tell me if this is the right way to go about it? Button 'pressed' is ...
-1
votes
0answers
9 views

Wifi connection problems

Nothing for the raspberry pi is working for me or my friends. I tried to hook up to my hot spot on my phone and entered the CORRECT password but it said "invalid argument." So I'm mad but still using ...
1
vote
1answer
11 views

C++ problem: boost/asio.hpp non existing

I'm using Raspberry Pi 3B+. I'm trying to compile a rather massive C++ package given to me from somewhere else. However make fails compiling. It cannot find boost/asio.hpp. I simplified the problem ...
0
votes
2answers
35 views

How to wire a Raspberry Pi to a 16 channel relay module? It won't work

A am using working on a project that requires a camera analyzing some images and activating the appropriate GPIOs to control a relay board. I currently have a touchscreen display, a Raspberry Pi Cam ...
0
votes
0answers
11 views

LED Strip on Raspberry Pi Check if its On - Neopixel

How can I check if the one pixel is on or not? Is there any function for that. I've googled but couldn't find anything helpful. import board import neopixel pixels = neopixel.NeoPixel(board.D18, 17) ...
0
votes
0answers
11 views

Trouble installing Tensorflow for raspberry Pi [on hold]

So I'm following https://www.tensorflow.org/install/source_rpi to install tensorflow on the raspberry Pi. However when I get to cross compiling the code using the command provided by them I get the ...
0
votes
1answer
15 views

Can I download Raspbian update packages on a Redhat Linux Server?

I have a Redhat Linux Server that I'm running and I'm trying to create a update repository for Raspberry Pis, is it possible to download the update packages to my Redhat server, and if so, how?
2
votes
2answers
70 views

Choosing a Pi4 power supply

I'm trying to decide what is the best option for powering a Pi4. The specs mention for a minimum of 3A. Let's consider we would also like to connect a 2.5" drive to the Pi4. Could someone more ...
1
vote
0answers
18 views

Disable alt+f4 in chromium

I currently have a Basic X Server with matchbox window manager with opens a nw.js (was called node-webkit) chromium browser. matchbox has by default all hotkeys deactivated. The only thing left ist ...
1
vote
2answers
31 views

Raspberry pi 3B+ and Beats Pill+ bluetooth speaker

I have Raspberry pi 3B+ and bluetooth speaker Beats Pill+. I am trying to forward all audio to this speaker and use it as default. Bluetooth connection between rpi and speaker is not a problem, using ...
0
votes
0answers
33 views

Python library for wireless communication between unknown pies [on hold]

I'm setting up a network of rpi's for multiroom audio purposes. I want all the rpis to be connected to each other by using tcp sockets (I need to be sure that messages are sent and received) so that ...
2
votes
0answers
19 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 ...
0
votes
0answers
24 views

Cannot send mail from Buster

I have installed Raspbian Buster with desktop on my Pi3B+ and am processing to install my apps. This is proceeding, most work allowing for newer versions, however I can't seem to send mail using ssmtp....
-2
votes
0answers
29 views

How much does the raspberry pi camera consume internet data for live streaming in web browser?

How much does the raspberry pi camera consume internet data for live streaming in the web browser? According to my python running code, the internet is consuming 15GB data per day to live stream the ...
1
vote
0answers
15 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
44 views

HDMI power circuit on the Raspberry Pi 4

The previous models of the Raspberry Pi used different circuits to connect its 5 V power rail to the HDMI connector, i.e. How much current can I draw from each model's HDMI socket? Especially the ...
2
votes
1answer
66 views

Powering the Pi 4 - safe voltage levels and current requirements

How to safely power the Pi 4, more specifically: What voltage levels are safe to power the Pi 4 via the USB-C connector or via the GPIO header? What are the current requirements? What Power ...
0
votes
0answers
23 views

picamera how to detect darkness

I'm trying to detect the darkness using picamera. I guess I have to capture an image and elaborate it pixel by pixel getting the brightness or color value and if it is beyond a threshold that I ...
8
votes
1answer
901 views

Pi 4 I/O interface options… and where to find them

The BCM2711's hardware documentation lists multiple I/O interface options. Among others these are: up to 6 × I2C, up to 6 × UART (muxed with I2C), up to 6 × SPI (only five exposed on Raspberry Pi ...
1
vote
0answers
23 views

Interrupt issue - Wiringpi and pigpio show different values for pin

I am having an issue with raspberryio/wiringpi interrupts. A lot of extra interrupts are generated. My configuration is as follows: Physical pin 16: Set as input Pulldown resistor Interrupt ...
1
vote
1answer
46 views

What is the configuration of the 4-pole A/V jack on the Pi 4?

What is the configuration of the combined analogue audio and composite video 3.5mm jack on a Raspberry Pi 4?
1
vote
0answers
15 views

RPi Quadcopter under RISC OS

it is well known that the pi is in recommended for the quadcopter as raspbian is not a real time operating system the question is, will using RISC OS offer any advantage over raspbian, and make the ...
1
vote
0answers
21 views

6 Stepper Motors at 3000 Steps Per Second

I am planning on purchasing 6 stepper motors that I will need to operate at roughly 3000 steps per second each with DRV8825 stepper drivers. I was wondering if the Raspberry Pi 3B+ has the speed to ...
4
votes
1answer
232 views

Can the Raspberry Pi 4 better distribute Python scripts to all four cores?

This relates to previous questions regarding the GIL (Global Interpreter Lock) for Python on the Raspberry Pi. My question has to do with the new processor on the Pi 4 - does it still have the same ...
0
votes
0answers
25 views

Sending data between PC and Raspberry Pi

I have been trying to send data from my Windows PC to my Raspberry Pi 3 for a python controlled speaker project. I am using TCP sockets which I don't know much about. Client code (PC): import ...
0
votes
0answers
8 views

If I get Anaconda for Raspbian, how will it affect the existing Python installations?

In Raspian, I got Python 2(IDLE) and Python 3(IDLE) already installed. I'm more used to working with Anaconda with all its included packages. I'm just not clear if I install Anaconda, will I get an ...
0
votes
0answers
8 views

Ubuntu Server 18.04 on Raspberry Pi B + / Resolution Problem

Does anyone have a solution to a Resolution problem with Raspberry Pi B + running Ubuntu Server 18.04? It is connected to Samsung TV via HDMI and text is cut off (Spilling off screen). It is unusable ...
0
votes
2answers
31 views

How do I download raspberry pi updates to a linux server [on hold]

Relativity new to Raspberry Pi and Linux in general, but essentially I'm trying to create an update repository for my Raspberry Pis via a separate Linux server, how would I go about doing this? On the ...
0
votes
0answers
22 views

Raspberry Pi Laptop Requirements [on hold]

I'm currently on a project using a Raspberry Pi. I'm trying to create a laptop complete with a display, mouse, USB slots, etc. Will a Raspberry Pi 3 Model B+ with 1 GB RAM be enough for this?
1
vote
0answers
40 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
0answers
94 views

Can Raspbery Pi 4 hardware decode 4k@60hz H.265 10bit video?

I have seen it has H.265 support, but not specifically for 10 bit. Can anyone confirm this?
2
votes
0answers
19 views

Raspberry PI Zero Qt GUI Animation too Slow rendering performance

I have using the Qt by cross compilation method by this site instruction by this configuration: ./configure -release -opengl es2 -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=~/raspi/tools/...
1
vote
1answer
38 views

Using an additional WiFi dongle to create WAP and switch

I followed the answer to this question: Access point as WiFi router/repeater with additional WiFi-dongle To have my 3 B+ act as a WiFi hotspot where wlan1 connects to the internet (WAN) and the pi ...
3
votes
5answers
767 views

Using Raspberry Pi to flash its own SD card

I'm developing a Buildroot OS for the Raspberry Pi, and my workflow requires very frequent re-flashing of the SD card to test new iterations. The process of removing the SD card from the Pi, flashing ...
3
votes
1answer
35 views

Permanently set keyboard repeat rate on Raspberry Pi?

I cannot seem to set the keyboard repeat rate permanently no matter what. I don't like the default setting as it is way too slow. After setting the keyboard Character Repeat delay and interval via "...
1
vote
0answers
10 views

What is the exact configuration (e.g. MIMO configuration) of the 802.11ac of the Pi Model B?

The specs for the Pi 4 Model B say dual band 802.11ac but not the degree of MIMO, critical for performance. What is it. Is there provision to add external antennae?
1
vote
0answers
13 views

Which Raspbian package contains the cdio C++ bindings?

I can't find them in libcdio-dev, and a search for the most important header file, cdio.hpp, in the Debian package catalog gave no results. A libcdio++ package seems not to exist either. Doesthis ...

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