Most voted "raspberry-pi" questions
Raspberry Pi is a low-cost, credit card-sized computer with ARM architecture processor, developed in the UK by the Raspberry Pi Foundation.
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13
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answers5462
viewsWhat is the lifespan of an SD card with Raspbian (Raspberry Pi)?
As all Raspberry Pi users should know, operating system runs from SD card. This can result in a problem, because if the card is written many times constantly, it will reduce SD lifespan for quite…
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answers58320
viewsError: Access denied for user 'root'@'localhost' (using password:NO) accessing Website
Good afternoon, I’ve been trying to run a website through a Raspberry to access with remote access. I installed OS Pipplware, along with Lamp and phpmyadmin. I sent through Filezilla the website…
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answer68
viewsPass captured data from a Python code to Shell Script
I would like to know what to do to take this data captured from a DHT11 sensor (Python Code [Temperature and Humidity]) and pass them to a Shell script if umid is not None and temp is not None:…
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votes2
answers1461
viewsHow to insert query result in mysql with python
I need to enter in the database the result of this query through the temperature module. The code is this. Temperature and humidity are already returning, but not saved in the database the values. #…
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answers139
viewsRFID-RD522 with Python
Good morning guys!! I’m trying to connect a module RFID with PYHTON in the Raspberry B I followed the following tutorials:…
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answers233
viewsHow to fix this PHP code in Raspbian (Raspberry Pi 2)?
I am creating 2 monitoring projects here in the company with 2 monitoring pages that will use PHP and HTML and will run on Raspberry Pi 2 board (Raspbian). The code is very simple, I can open it…
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2
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answers160
viewsttyS0 Serial Communication Error
I’m utilizing terminal serial TTL communication with an Orange Pi One and a PIC16F628A. The program that is on the microcontroller is simple: if it receives the character '1' puts a bit at a high…
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answers54
viewsRaspberry Pi3 + Raspbian - Python serial driver problem cp210x
Hello, I would like if possible, help/tips on the following problem: I am connecting my device using cp210x driver to my raspberryPi3 using Raspbian system, through USB-Serial communication, but…
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2
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answer140
viewsstore the data received from a sensor in a python list
How can I save 100 values received from a sensor in a python list, to later calculate their average? This is the code I have so far: #biblioteca para chamar ficheiros de outra extensão from…
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answers157
viewsSend data via Arduino serial communication - Raspberry
Good morning, I’m having problems receiving the data that the Arduino is sending, what I want to read the line information, play this information in a variable and compare the values in Raspberry.…
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1
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answer28
viewsHow to reduce the time of creating and writing a Linux image for use in Rapsberrypi?
I’m resuming a project in which I need Rapsberrypi, but in the last attempt to create an image is to record it in Sdflash, using the DD command, the process took hours to complete, I ended up…
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1
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answers154
viewscan’t load IA 32-bit . so on a ARM-bit Platform
I have a jni . library only to run on a Raspberry PI, but the architectures are not compatible. How can I run it? I have all the sources. EDIT: I was able to compile the library by Rpi, but now it…
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1
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answers103
viewsHow do I connect to a user-selected SSID?
I’m doing my thesis and I’m developing an Android app to set up home devices Iot (wifi). In this case, the devices are being simulated using a Rspberry Pi 3, which creates an access point (captive…
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1
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answer54
viewsUncaught Typeerror: Cannot call method "playFlash" of Undefined
This server program to pop up a website and autoplay a few songs, the code has run smoothly on windows and android, and the browsers tested form the IE, Firefox, Chrome and Opera. However, I have…
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1
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answers24
viewsLayout manager for OLED displays
I’m working on a project involving technologies Python3.x, Raspberry pi and dysplays OLED. But there are several displays each with different resolutions and color range and I don’t want to…
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1
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answers222
viewsAngular 4 application slows down over time
Hello. I have an Angular 4.3.5 application that slows down when used after a time (~20 minutes). My scenario is more or less like this: Rest API and Angular static files are on a Raspberrypi B 3…
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1
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answers78
viewsVariable not defined
My code gives me an error in a definition of a variable but I think it is declared the variable bits_rx, this variable aims at the result of the conversion: while(1): while not radio.available(0):…
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answers106
viewsHow to Start Arduino Serial Communication with Raspberry PI 3
I am making a little project on the Arduino and need to start the Serial communication with the Raspberry PI 3 without IDE with the S.O Raspbian Lite. That is, the Raspbian Lite has no graphical…
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answer481
viewsRead and change GPIO pin status of Raspberry Pi 3
I am doing a small project with a rRspBerry Pi 3 that consists, among other things, to control some outputs through a web page. I needed to be able to know and print on the page what the status of…
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1
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answer73
viewsWhy is the source not changed in Raspberry Pi?
I have a graphical application using Gtk in Python, the program has font definitions and font sizes. When running the program on linux works correctly, but when running on Raspberry the source is…
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answers61
viewsVB.NET - How to make a Loopback Serial Test program in Universal Windows Platform?
I have a problem translating the code C# to VB.NET on the UWP platform making a Serial UART Test Example made available by the Microsoft website. The program in C# is working perfectly, but when I…
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answers91
viewsOpencv - C++ - Raspberry Pi
I want the function to check all the time if there is a fingerprint. If there is, I want you to start the capture scheme in sequence (the for nested), but the function I created is not working that…
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answers111
viewsKivy using Raspberry pi 3
I’m using HDMI output from Raspberry Pi 3. Using a code Python that opens a window Kivy, this window fills the whole screen and overlap everything else(open windows, pointer mouse...). Apparently…
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answer542
viewsMultiprocessing in Python
I’m creating processes using multiprocessing in Python, but need to create processes within other processes, ie child processes. It is possible to do this using multiprocessing? Code: import time…
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answer513
viewsObject counter by an infrared sensor on Raspberry with Python
Hello friends I made an object counter using an infrared sensor and Python, but would like help to refine the code. Because this counter of mine has a problem, if the object stops in front of the…
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answer347
viewsHow to remove the edge of a Pyqt5 window on Raspberry Pi?
I’m developing an application that will run on a Raspberry Pi interfaced in Pyqt5. This application will occupy the entire screen, making it impossible for the user to click outside the application.…
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1
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answer68
viewsPython - value saved to database is reset
I’m doing a job for college using an Arduino and a Raspberry to make a self-contained vegetable garden. The sensors of temperature and humidity, luminosity and the hygrometer are connected to the…
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answers20
viewsHow to open vlc with flask in rapberry py
Has anyone tried to start the vlc through Flask? I am trying through API with Flask to start a video playback in vlc, it runs but does not start the graphical interface. Someone’s been through…
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answers175
viewsBluetooth connection - Raspberry Pi 3 B + with ios devices
What is the procedure to enable Bluetooth from Raspberry Pi 3 B+ to send and receive data via bluetooth with Ios? I developed an application, where through bluetooth (Bluez, Pybluez and…
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answers41
viewsDoes Pyqt5 monitor events asynchronously on Windows and synchronously on Raspberry?
Context I’m developing a program that uses Opencv4 to identify some metal fasteners, the program is relatively simple and uses in short color search contour filters, in Windows so far everything…
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answer113
viewsNode.js Conflicts: /sbin/Node vs /usr/bin/Node
Good morning, everyone ! I would like someone to exclaim very well this conflict that arises in the installation of the nodejs ? Thanks!
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answers102
viewsM command "/usr/bin/nodejs" "/usr/bin/npm" "install" "Forever" "-g"
I tried to install a module and found some irregularities. I would like it to be precisely. I thought it was a conflict between directories /usr/bin/nodejs and usr/bin/npm. I tried to install…
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answer242
viewsHow to plot a graph when terminating a computer vision script on Raspberry pi?
I have a code using opencv Raspberry Pi and it is running a pattern recognition loop. In the end I close the script using "Ctrl + X" without any problem! I want to "stop" the graphical processing,…
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answers136
viewsHow to maintain Sqlite database on Raspberry Pi?
I have an application running on Raspberry Pi with Windows Iot, but every time I deploy in a new version or when I restart the Raspberry the entire Sqlite database is deleted. I saw something…
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answers32
viewsIt is possible to import a lib . so x32 using an arm7l (Raspberry Pi 3b)
I was developing an application to run on a Raspberry pi 3 but while the mail didn’t deliver I started on the notebook (Linux Mint) and I didn’t have many problems. When I received the Raspberry I…
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answers734
viewsHow can I plot a spectrogram in real time by reading data from an ADC such as the "MCP3008" connected to the Raspberry GPIO?
My idea will be to read data from an ADC such as the MCP3008 connected to Rasperry’s GPIO, from the readings plot a real-time graphics of the signal processed by a FFT(fast Fourrier transform) or…
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answer86
viewsProblems with installations in Raspian
I’m having a problem, I’m not getting, install no package on raspian, appears the following error: Error: server' JVM at /usr/lib/jvm/java-8-openjdk-armhf/jre/lib/Arm/server/libjvm.so'. Please…
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answer71
viewsPycryptodomex installation error in osmc Raspberry pi
When I try to install "pycryptodomex" or "pycryptodome" gives me this error here at the end, I already checked the header file "stdint. h" and it is in the folder described in the error:…
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answer113
viewsGPIO Pins Rpi 3 Python
I’m starting with a project with my rpi 3 that concise in using engines connected to the rpi3 gpio pins! In my code there is some error connected in the mode of the pins, but I do not know how to…
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votes3
answers381
viewsHow to use Raspberry as a super user?
I’m using a Raspberry in which I installed a Python program with its files and report folder. The problem is that I cannot delete the files, because only super user can. I need the user to be able…
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answers42
viewsConnectivity between 2 pi Raspberry via Local Network
How can I connect two pi Raspberry over a local ethernet network, for example send a text from one to the other over the local ethernet network.
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answer23
viewsAdafruit_bmp in python 3
I am testing the BMP180 sensor on Raspberrypi 3 B+ and when I run the file on Raspbian gives me this error: when I run the same file from the command line it gives the values it should give, no…
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answers178
viewsWeb server with Raspberry, performance
Good morning Personal! I have been studying the possibility of creating a web server with Raspberry pi 3 b+ and I came up with the question: Considering that I will publish light websites (none of…
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answer112
viewsCommand that replaces Team.Leep?
I am making a program that detects colors and shapes of objects with a camera, when being recognized the format and the color configured, the program makes the control of the GPIOS in which I…
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answers83
viewsRaspberry for monitoring system
personal. I would like to make a security system with cameras that would monitor an environment and recognize if anything out of the ordinary appeared. I would actually like to use machine learning…
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answers42
viewsHow to Move Servo Motor Sg90
Like I would do where the print("RED"), print("GREEN") and print("BLUE") to move a servo motor at 180°, what happens is that the engine does not move, (I’m using Raspberry pi 3 b+). if r >= 50…
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answers33
viewsRun several videos
I have about 8 sequences of videos that need to run as the user chooses the option (1 = Video_1, 2 = Video_2) Example: "Enter the desired option" "1 - Start Engine Machine 01" "2 - Reestablish…
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answers61
viewsRaspberry PI does not load page
We developed a page using Laravel to load on Raspberry Pi Load normally, only there was a need to change technology. We did not change to angular/cli The angled page does not connect. Gives Gah!…
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answer59
viewsHow to hide files programmatically
A hidden file in a linux environment has a point (.) before its name, so that for example: .arquivo.c is hidden and arquivo.c isn’t. Knowing that, my question is, how to hide a number of files…
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answers269
viewsclear python buffer each time it sends the value
I have an Raspberry sending data every 15 seconds, however I have a value that takes time to update, will cleaning the buffer every iteration in while True solve the problem? my code is as follows::…