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Questions tagged [python-3]

Use this tag when referring to the Python 3 language. This can include discussions about specific features unique to the language or perhaps when referring to software that requires Python 3 in order to function. Note that general programming questions are often better suited to Stack Overflow; use this tag only where directly relevant to the Pi.

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RPi 5 Python Shhutdown command shutsdown then reboots

The issue I am facing is that my RPi 5 running bookworm is running a heavily modified version of the script found on https://learn.sparkfun.com/tutorials/raspberry-pi-safe-reboot-and-shutdown-button/...
Collin's user avatar
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0 answers
23 views

Slow tkinter app loading and choppy mouse

I have a raspberry pi 5 running a python app that uses a customtkinter UI and TCP client running on a thread along with some serial port IO on another thread. The app loads in around 15 seconds and ...
Ohbhatt's user avatar
0 votes
0 answers
18 views

GPIO not performing program operations

I'm working on tensorflow lite project with custom models. I'm making a conveyor belt to detect and remove defective items which are trained by me. My camera detects object but when it comes to make ...
namaaa's user avatar
  • 1
0 votes
0 answers
16 views

RPi 5 Code Does Not Work Without Root

I have a code. Because it is very long (2500 lines) I can not throw it here but here are the libraries: import sys import datetime import locale import serial import time import os import cv2 import ...
MEnsar55's user avatar
0 votes
1 answer
208 views

RPi 5 PyQt5 Install Error

I need to download PyQt5 for a project on my Raspberry Pi 5. I opened a Virtualenv and downloaded other libraries. But I got the following error when downloading PyQt5. Looking in indexes: https://...
MEnsar55's user avatar
0 votes
0 answers
280 views

Connecting a RFID-RC522 with Raspberry Pi 5

I bought a new Raspberry Pi 5 for a project that has RFID-tag reading and writing functions. I tried using some old python scripts(MFRC522-python) that uses RPi.GPIO to interact with the IO pins but ...
Bruh255's user avatar
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0 answers
25 views

GNSS module do not working with raspberry pi, but working on pc

I have an error with my GNSS module. I use it with an usb-uart driver, and when I connect it to my computer, and read datas with u-center or in a python script I get continously updated position ...
Domkrt's user avatar
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0 votes
1 answer
62 views

I cannot install OpenCV on RaspberryPy

I cannot install OpenCV on RaspberryPi 4 Model B with Bookworm OS. I tried at least 4 different ways including pip and cmake. Each time I reach the step to install OpenCV, it ends in failure: cannot ...
Ovidiu Moise's user avatar
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0 answers
37 views

How to run SPI1 and SPI0 at the same time?

I am currently attempting to send and receive data from SPI0 to SPI1 on a singular raspberry pi. My Current code is as follows; from multiprocessing import Process import spidev import time import sys ...
Ben's user avatar
  • 11
0 votes
1 answer
412 views

My libmal.so file is missing (picamera require), even after reinstall package

I'm working on a camera system based on a raspberry pi 5 (8gb), with a brand new (2023-12-05 and updated) standard Raspbian 64x, and my python codes are running in a virtual enviroment (venv). I would ...
Domkrt's user avatar
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0 votes
0 answers
74 views

Achieving high FPS on multiple still image captures

Trying to achieve a good 30 fps on Pi 3 Model B using the old 5MP camera module 1.3. Recently downloaded OS Bullseye, and using PiCamera2 on Python. The goal is to achieve: Good FPS ~30FPS for a 100~...
Khaled's user avatar
  • 101
0 votes
1 answer
662 views

on bookworm cant use picamera2 with opencv-python

installed opencv--python on bookworm os when using picamera2 i get this error: QObject::moveToThread: Current thread (0x7f6802fd50) is not the object's thread (0x7f6822efb0). Cannot move to target ...
Oferb's user avatar
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0 votes
0 answers
27 views

how to start a tkinter GUI before the login window on raspberry pi4 b

I Have a raspberry pi 4B running using Debian GNU/Linux 12. I created an executable file as GUI. I want to start this GUI before the login window appear and when ever the user close it the login ...
georges's user avatar
-1 votes
1 answer
33 views

PRi.GPIO works as normal user but for root ModuleNotFoundError

I am not a Linux specialist and would be glad if you could help me with this problem. Environment: Raspi 3b with Debian uname -a gives the following output: Linux MM3 6.1.21-v7+ #1642 SMP Mon Apr 3 17:...
Jens W.'s user avatar
0 votes
1 answer
30 views

PyQt5 Widget Background Color Incorrect on my Pi

I have searched high and low for this problem, but cannot find anything anywhere. I have Python Version 3.8.10 and PyQt5 version 5.15.10 running in a Virtual Environment on my Py4 with 8Gb Memory ...
themetman's user avatar
0 votes
1 answer
174 views

SPI sending and receiving data

I hope you can help. I am currently using a raspberry pi 4b and want to be able to use the SPI capabilities. For my pi I have SPI0 and SPI1. The pins used are as follows; SPI0_MOSI - pin 19 (BCM_10) ...
Ben's user avatar
  • 11
0 votes
0 answers
45 views

Why can’t I stream an mp4 from my RPI by opening it in the browser?

I’m new to self-hosting and am still learning what is and isn’t possible. I have a raspberrypi 4b and am running raspberry piOS Lite (bullseye). As an experiment, I uploaded an mp4 to my RPI and then ...
nslamberth's user avatar
0 votes
0 answers
27 views

_tkinter.TclError: couldn't load file "/home/tsc/.local/lib/python3.9/site-packages/tkinterDnD/linux/libtkdnd2.9.2.so"

I'm trying to run a simple script to verify the installation of customtkinter on my raspberry pi 4b. import customtkinter def button_callback(): print("button clicked") app = ...
Greg W's user avatar
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1 vote
1 answer
240 views

Adding a WiFi network with Python over bluetooth

I'm working on a project where a mobile app can find and pair with a headless raspberry pi running Pi OS (Debian Buster Port) over bluetooth, send it an ssid and password and it'll create and hop on ...
bsautner's user avatar
  • 218
0 votes
1 answer
836 views

Python PIP not working after upgrade

How do I fix this? I was trying to upgrade my Python to 3.10.2 which works fine. However, pip is throwing errors. These are the steps I followed to upgrade: #Downloaded new version and Extracted ...
CornDevil's user avatar
0 votes
2 answers
102 views

Why does this GPIO button click run twice if I remove the print statement?

I run this script when the Raspberry Pi boots. When a key is pressed (GPIO 19) the interrupt function gets called. If I remove the print("BUTTON PRESSED") statement on line 10, the interrupt ...
Raed's user avatar
  • 105
1 vote
1 answer
367 views

Raspbian: Visually Open Terminal Window and execute command after boot and login to desktop environment

Please god can someone help me. I've just spent the last 8 hours trying absolutely everything I can find online in every different way I can possibly think of and none of it works. Chron jobs cant ...
problemlow's user avatar
0 votes
1 answer
21 views

Raspbian Show Service status via LED not finding substring in output

So im trying to make a Python script that constantly tests if a services is running and output the status via a red LED. I have a script: import RPi.GPIO as GPIO import time import os ...
Steve's user avatar
  • 9
1 vote
1 answer
27 views

Outputting to SH1106 display with PIL only works from loaded files [closed]

I'm dealing with a maddening bug when trying to use an OLED module (sh1106 clone, interfaced over SPI) with a raspberry pi. I have stolen the following function from https://github.com/8TN/Raspberry-...
catalogue_number's user avatar
0 votes
1 answer
55 views

Convert from physical pins to I2C

I have a QR code scanner that uses wiegand protocol, have used this code for it, it worked fine for physical pins, but now I have another board onto the Pi, an extender board that uses i2c protocol, ...
Martzy's user avatar
  • 3
2 votes
1 answer
538 views

Downloaded Raspberry Pi (32bit) showing up as (64bit) when verified with uname -m

I'm trying to use Raspberry Pi for a voice recognition project. I have Raspberry Pi 4 model B. I was having issue downloading PyTorch with the error of "Could not find a version that satisfies ...
user155849's user avatar
0 votes
0 answers
56 views

How can I make some videos in the GUI that was designed using qt5 run in a loop?

I have some videos in a GUI that plays when certain conditions are met. The problem I have is that I am unable to make the videos start again after they end. Here is the code for the UI: import os ...
Shamooooot's user avatar
0 votes
3 answers
648 views

How can I run at boot or autostart an app with GUI?

I have a python script with a GUI that was designed with qt5, the script runs fine whenever I run it through the terminal or Thonny IDE. But no matter how much I tried, after trying many guides, ...
Shamooooot's user avatar
0 votes
0 answers
76 views

How to get accurate SPO2 readings from MAX30100

As you can read from the title, I'm not getting accurate SPO2 readings in the output. I should be getting values of 100 and below since it is in percentage: but I keep getting values over 100 (like ...
xFragmented's user avatar
0 votes
0 answers
274 views

Use pip cache for docker builds

I want to install python packages within docker containers. Since the build of some packages is time-consuming and sometimes fails, I want to use a cache that is reused. I found the mount type cache ...
Dronakuul's user avatar
1 vote
1 answer
188 views

How to program remotely on horribly slow Pi-2

I have an old RPi 2 B which I've loaded the latest version of Raspberry Pi OS Lite onto. I'd like to use it to make an IoT device using an TFT LCD screen to show information like the weather and my ...
Atom's user avatar
  • 113
0 votes
1 answer
38 views

Raspberry Pi musicbox after pressing next/previous button, when the track ends it fails to play next track

I have been building a little musicbox. It should play the mp3 files using mpg123. The music should start when one of the buttons (push button) is depressed (like sensor) it should start playing the ...
Sumistu's user avatar
0 votes
0 answers
55 views

waiting for dbus address to appear error

I'm trying to run my Python executable on startup but I'm getting an error (waiting for dbus address to appear error) continuously it can't stop. Is there any way to stop I tried to update and upgrade ...
sathishkumar B's user avatar
0 votes
0 answers
77 views

Trouble capturing images from a Raspberry Pi camera using Python

I am having trouble capturing images from a Raspberry Pi camera using Python. The following code works fine the first time, but fails to read data from the camera on subsequent attempts: # shotFoto.py ...
ZondoX's user avatar
  • 1
1 vote
0 answers
119 views

PCA 9685 i2c communication issue

I would like to ask a question regarding the usage of secondary channel of i2c in rpi 4b. I have enabled the secondary channel through adding "dtoverlay=i2c-gpio,bus=2,i2c_gpio_sda=22,...
user153780's user avatar
1 vote
2 answers
955 views

Updating Connector/Python for Python 3.11

Having moved to Python 3.11, I need to update Connector/Python - which requires the MariaDB Connector/C library. This library is normally installed with python -m pip install mariadb But I'm getting ...
tyddynonn's user avatar
0 votes
0 answers
118 views

python script for 4x4 keypad, some buttons not working

I'm trying to use a python script to make a connection with my 4x4 keypad on Raspberry (RPi.GPIO). The code does not work correctly, because the first and second rows do not respond. I'm trying to use ...
Jorge Augusto Wilchen's user avatar
0 votes
1 answer
271 views

Python requests is too slow with certain WI-FI connection

I'm working on a TTS app using AWS Polly in Raspberry PI 3 B+ and when I post a text using Python requests it take a long time receive the response, around 16-17 seconds. This happens only with a ...
Shyam3089's user avatar
  • 111
1 vote
0 answers
57 views

Tkinter GUI not starting on boot with ROS

I'm trying to launch a tkinter GUI I made that is used to read GPIO pins as well as some ROS topics. I'm using Buster 10 and ROS Melodic with Python 3.7. I am using Clearpath's robot_upstart package ...
jr4d's user avatar
  • 11
1 vote
1 answer
439 views

2 motors on L298N controlled with GPIO from Rpi3B .. python telling me channel already in use and motors not turning

I have adopted Electronics hub tutorial to run 2 motors from a L298N controlled by Rpi3B using GPIO. Why is my version of the code not working? I do understand that I could ignore the "channel ...
rozzers's user avatar
  • 13
0 votes
0 answers
39 views

LoRa HAT communication module don't send anything

I'm working now an long range communication system, and I need help. I can't use GSM, WIFI, etc. I test one LoRa Raspberry pi shield, and I bought this: link, and I have followed this tutorial. Ofc I ...
Domkrt's user avatar
  • 1
2 votes
1 answer
518 views

Raspberry Pi 4 Python not finding installed libraries

I trying to connect an OpenCV OAK-D to an R Pi 4B. I've downloaded & installed all the requirements & installed the depthai library using pip To check its there, pip3 list | grep depthai ...
DrBwts's user avatar
  • 199
1 vote
1 answer
101 views

How to get measured(analog/digital) output from 801s vibration sensor? [closed]

I have Rpi3B+, 801s vibration sensor and a ADC. I need the analog output to plot a graph for analysis. Basically I need to observe how vibration is affecting the other properties of the machine. ...
Snehal Shende's user avatar
2 votes
2 answers
226 views

How to programically detect if display is plugged in to GPIO

I've attached an ePaper display to a GPIO bonnet/HAT and have set up cron jobs to run scripts that print data onto ePaper display. If I remove the HAT and display, then how to check if it's plugged in?...
Kuei's user avatar
  • 33
2 votes
1 answer
2k views

(raspberrypi) ImportError: Unable to import required dependencies: numpy

I use raspberrypi 4 ; 32 bit, linux run python error occur: ImportError: Unable to import required dependencies: numpy Original error was: libcblas.so.3: cannot open shared object file: No such file ...
44 chuang's user avatar
  • 143
1 vote
0 answers
165 views

(Raspberry Pi 4 and Python) Raspberry Camera mode raise picamera.exc.PiCameraMMALError and picamera.exc.PiCameraError

System: Raspberry Pi 4 model B, use external USB Logitech camera I'm follow the youtube tutorial but get picamera.exc.PiCameraMMALError andpicamera.exc.PiCameraError Relate discussion on other site ...
44 chuang's user avatar
  • 143
1 vote
1 answer
1k views

Trouble using Tensorflow: SyntaxError

I'm trying to use the LSTM neural network found here on my Raspberry Pi 4 Model B https://machinelearningmastery.com/text-generation-lstm-recurrent-neural-networks-python-keras/ I have trouble running ...
delgado's user avatar
  • 23
1 vote
1 answer
98 views

How to give Ownership to Pi from root to Mount_Folder

Here is my workflow and the issues I want to fix. First I mount the windows shared folder on Raspberry Pi. But in order to use that, I have to mount using sudo. sudo mount.cifs //<hostname or IP ...
MyatKaung's user avatar
1 vote
1 answer
289 views

Raspberry Pi spidev CLK working but no signal on MOSI

I have a Raspberry Pi Zero W that uses this LCD screen, including its touch interface using SPI0. What I am trying to achieve is to add another SPI device that uses SPI0. I am able to successfully ...
user3699569's user avatar
1 vote
1 answer
407 views

Exposure time in PiCamera not working

I am trying to take a long exposure image (30 sec+) in python using a RPi HQ camera (https://raspberry.piaustralia.com.au/products/raspberry-pi-hq-camera and the PiCamera module). This is my code: ...
Jake's user avatar
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