All Questions
124 questions
0
votes
1
answer
146
views
gpiozero combining button events in event driven code
I'm pretty new to the Python and Raspberry business and am currently working on my first major application. I like gpiozero and the ability to work with events throughout.
I would like to make my code ...
- 169
0
votes
0
answers
68
views
Is it possible to use pins 32-53 as GPIO on a Raspberry Pi4
My scenario is that I have a raspberry pi 4 using GPIO 2-27, and I am able to freely set the pins as inputs or outputs
print("Setting pins 2-8 as INPUTS with PUD_UP")
for pin in range(2, 9):
...
- 63
0
votes
2
answers
841
views
How can I set the display environment variable on a Raspberry Pi at boot?
I have a Raspberry Pi 4 with a 1280x800 display and no keyboard or mouse. I ssh into it remotely over WiFi and am coding it to display images, ultimately on its own without my ssh into it. I installed ...
- 4,711
0
votes
0
answers
37
views
Whenever i changing the widget i am facing the issue of delay in overall performance and user interface while using serial COM
I'm using this PyQt5 code on the Raspberry Pi 4.
When I run the code, I receive and plot analog values on the plot_widget via serial communication.
If I change the mode or widget, and then attach the ...
- 1
0
votes
0
answers
60
views
Problem with server to capture and send video over TCP/IP from USB camera
server.py to capture video from USB camera "A4 Tech" connected to Raspberry Pi 4B:
import cv2
import socket
import struct
import pickle
import logging
logging.basicConfig(level=logging....
- 1
0
votes
1
answer
189
views
Adafruit fingerprint sensor library error on a Raspberry Pi 4
I'm trying to test my fingerprint sensor, it shows up on the terminal too, but when I run this code this error shows up:
Traceback (most recent call last):
File "<string>", line 9, ...
- 13
0
votes
0
answers
30
views
RFID 522 reader with RPi4 only reads sometimes
I have an RFID 522 reader connected with Raspberry Pi 4 and it only works sometimes. I followed the schematic from a tutorial and used the corresponding code. The reader works perfectly fine, detecing ...
- 1
0
votes
1
answer
518
views
How to detect if a USB flash drive was inserted on Raspberry Pi 4, and list all the files inside the USB flash drive using pyusb?
I am using Python 3.11 on Raspberry Pi 4. Say I have a USB flash drive connected on one of the USB ports of the Raspberry Pi 4. How do I get the path of the USB flash drive, so that I can list them to ...
- 1
1
vote
1
answer
2k
views
Controlling raspberry pi bluetooth with a python script
I have a Raspberry Pi 4 Model B running Raspberry Pi OS Lite 64-bit with
Operating System: Debian GNU/Linux 12 (Bookworm)
Kernel: Linux 6.6.20+rpt-rpi-v8.
I have to control the Bluetooth of the ...
- 317
0
votes
2
answers
65
views
Is it possible to set a timeout property when connecting to a Raspberry Pi using pigpio
Pretty much when you try to connect to a raspberry pi remotely using pigpio, there doesn't seem to be an innate way of setting a timeout property in terms of how long should it attempt to connect to a ...
- 53
1
vote
0
answers
1k
views
ERROR: Could not build wheels for opencv-python, which is required to install pyproject.toml-based projects
I expected to download opencv-python on Raspberry PI 4, but found this issue.
pi@raspberrypi:~ $ pip3 install opencv-python
Defaulting to user installation because normal site-packages is not ...
- 11
0
votes
0
answers
394
views
ST7789 TFT shows blank screen
I have ST7789 display and I am trying to connect it and manage from Raspberry 4B (python). I'm currently using ST7789 python library, but anything I do the screen is always blank. Screen is only light ...
- 31
0
votes
1
answer
308
views
Problem with ALSA with Raspberry Pi 4b and voice recognition
I get the following error:
def recognizer():
try:
with sr.Microphone() as voice:
listen = sr.Recognizer()
voices = listen.listen(voice, 2, 30)
command = ...
0
votes
0
answers
81
views
Understanding Size Discrepancy between Raw Array and Image from Raspberry Pi Camera
I am using a Raspberry Pi Compute Module 4 with an Arducam IMX230 camera to capture raw images. The camera is configured for a specific sensor mode, but the resulting numpy array from the raw capture ...
0
votes
0
answers
456
views
Raspberry Pi 4 Thonny Opencv
I cannot run my code that I wrote on python IDE 3.11 to the python Thoonny 3.9.
I downloaded the opency libraty:https://qengineering.eu/install-opencv-on-raspberry-pi.html.
I also used picamera2 ...
