All Questions
35,730
questions
-2
votes
0
answers
12
views
How to capture and transfer images capture by raspberry pi camera to the laptop using python code?
I am working on project of user interface that automatically captures images from raspberry Pi and send it to laptop over ssh. I want to write python code on laptop that automatically ssh raspberry pi ...
- 1
-2
votes
0
answers
28
views
WIFI wireless safety
I have an internet box with a wifi access point.
I have a raspberry which is connected to this wifi access point.
Everything works fine. But, at night, i want to stop wifi communications. I can't ...
- 103
0
votes
1
answer
9
views
I am using Raspberry pi 4b, when I try to connect with wifi a problem could not communicate with wpa_supplicant
I am using lite os (for using open media vault 5). Yesterday I use my wifi with my pi and it works fine. But after install OMV5 I tried to connect with my wifi but a problem occurred. It says
Could ...
0
votes
0
answers
10
views
How Can I modify Wifi Proxy manual in raspberry pi?
I can change proxy manual in my android phone
But on raspberry pi There is no wifi settings so
How can I change the proxy manual in my raspberry pi
0
votes
1
answer
24
views
Spi wrong voltage
Obviously, my spi is not happy.
MISO and MOSI were idling around 1.5v instead of 3.3 so I added a 10k pull up, and that helped a bit, but as you can see, it's still not good. It idles around 2.8v ...
- 23
0
votes
1
answer
22
views
Can camera be placed in hermetic box
I want to use my Raspberry Zero camera OV5647 (with transistors on a wire) on air so I need to protect it from rain and corrosion. I want to place it in a hermetic waterproof plexiglass box but should ...
- 3
0
votes
0
answers
21
views
Why VGA VSYNC and HSYNC need 47 Ohm resistors in this schematic?
In Chapter 3 in this document there is a schematic showing a connection to VGA:
https://datasheets.raspberrypi.com/rp2040/hardware-design-with-rp2040.pdf
Why is there a 47 Ohm resistor connected to ...
- 131
0
votes
2
answers
24
views
How to create a data signal using pwm from a gpio output?
I'm a new member of the raspberry pi community and I have problems with starting my first project.
I want to be able to create a data signal using pulse width modulation with the gpio headers. The ...
- 1
0
votes
1
answer
22
views
whats the difference between systemd service and running app directly?
In what ways are things different when running an app directly as a user, vs running the same app as a service with systemd?
I wrote an app to play audio cues on my RPI.
It is working perfectly when I ...
- 101
0
votes
0
answers
16
views
Different UART behavior between ttyS0 and ttyAMA0
I'm using serial to communicate with this board (Serial-CAN-Board) on a RPi4. UART is enabled with
enable_uart=1
Console over serial has been disabled with raspi-config and I am using SSH over ...
0
votes
0
answers
13
views
How to get an Adafruit 16x2 Character LCD kit to print information at startup running in headless mode [closed]
I'm using the following kit to print to an LCD: https://learn.adafruit.com/adafruit-16x2-character-lcd-plus-keypad-for-raspberry-pi and the associated python classes / library the webpage lists. I've ...
- 103
0
votes
1
answer
36
views
Heatbed module control with Raspberry Pi 3+
I want to control a nichrome wire with the PWM signal from a Raspberry Pi. The MOSFET modules that can be found on the net for the combination with a Raspberry became much too hot. So I decided to try ...
0
votes
0
answers
33
views
How to create small SD Card Images?
The builtin SD Card Copier tool can create copies smaller than the system sd card, so it can be used for cloning the system into smaller cards. Is there a similar tool (running on any os) for creating ...
- 101
0
votes
0
answers
18
views
dhcpcd creates and deletes veth* interfaces in thousands
I run a RPi4 (4GB) with Raspbian 10 (buster) from a SSD. It's running docker containters with nginx, nextcloud, pihole and some others.
The RPi crashes from time to time. I found out it runs out of ...
- 1
0
votes
0
answers
28
views
run servo motor with external power bosen't work for me
I use 9v/0.5A DC cable to breadboard and connect servo motor but it doesn't work. Code might be wrong but I'm not sure.
I connect raspberry pi - breadboard - servo motor like this
and this is the ...
- 1
0
votes
0
answers
9
views
Can a RPi be network booted with an NFS other than NFSv3?
Please excuse me if I am asking this question in the wrong place: I'm trying to network boot Ubuntu 22.04 on a Raspberry Pi 4B, and I'm not entirely clear where Raspberry ends and Ubuntu begins :-)
...
- 111
0
votes
0
answers
18
views
I need to display a GUI on a small RPi screen and still be able to remotely access the RPI via XRDP or NoMachine [closed]
The small touch screen GUI (connected to the hmdi ribbon connector) will be reporting temperature, humidity, and motion with the odd text or audio report.
I also want to be able to simultaniously ...
-1
votes
0
answers
25
views
Camera plugged into raspberry pi timing out when taking pictures
I have a 170 degree fisheye USB camera module from ELP (camera model is ELP-USBFHD04H-L170). Yes, it's a configuration file I created using the command nano ~/.fswebcam.conf . I'm able to run the ...
1
vote
1
answer
44
views
Is the waveshare 2.7 e-paper HAT ink display the right display for a pico?
I'm very new to programming on raspberry pi's and I haven't coded anything in about 5 years so bear with me.
My company is asking me to connect a 2.7 e-paper hat INK display to a raspberry pi pico. I'...
- 21
1
vote
0
answers
16
views
RC522 not writing with raspberry pi
So I am new to this, I followed this tutorial https://pimylifeup.com/raspberry-pi-rfid-rc522/ and did exactly what they said in it. It looks like my RC522 isnt detecting any RFID card. Is there any ...
0
votes
0
answers
15
views
CM4 Breakout Board Ethernet instability
I am creating a breakout board for the CM4 which should support Gigabit Ethernet and POE. I embedded a magjack onto the breakout board.
I am struggling with the connection stability, however: the CM4 ...
- 101
0
votes
0
answers
13
views
Capture vga with RPI
I want to split a vga cable from computer A to a screen, and also as input into computer B (preferably a raspberry pi) for recording to a video file.
Any hint as how to best go about it (software, ...
- 101
0
votes
0
answers
19
views
Troubles with Systemd-networkd on RPi w/ Arch ARM?
My setup is: Raspberry Pi 2 w/ Arch Linux ARM.
It’s been running headless from the get-go since 2019, used as a home server for Pi-hole and self-hosting my webpages. Pi is connected via Ethernet, and ...
- 1
0
votes
0
answers
18
views
Slave raspberry pi from laptop
I am working on raspberry pi which capture images from camera connected with raspberry pi. I want to direct raspberry pi from laptop to capture images whenever asked.
- 1
0
votes
1
answer
24
views
Help, I mamed the RPI's networking drivers, and now I can't get it back to normal!
everyone, I messed up my RPI4B's wifi and networking software. BAD.
Long story short , I followed a bunch of guides on how to host and connect to a wifi network at the same time (ethernet - acces ...
-1
votes
0
answers
26
views
Rasberry Pi as an HDMI passthrough
So I've never posted here but have heard many great things, I figured I'd take a shot. Apologies in advance if I'm asking in the wrong spot or something that has already been answered, I looked but ...
0
votes
1
answer
17
views
ICMPv6: NA: <MAC address> advertised our address <IPv6 address> on <iface>!
I have a Pi Zero W running Raspbian 11. It is connected via WiFi. I am using dhcpcd to configure my interfaces (the official method IIUC) with the default config file. I have a DHCPv4 and v6 server ...
- 101
0
votes
0
answers
13
views
Help with Pi connected to lcd display
I connected my Pi to a 4in lcd display because the screen is split into four. I am not sure how to fix it to be in landscape mode and only one displaying. I've tried going into config.txt and using ...
- 1
-1
votes
1
answer
15
views
Triggering MAPIR camera with PWM via GPIO on RPi
I have similar setup as this post: PWM via GPIO to trigger a MAPIR Camera
but a different camera: https://www.mapir.camera/collections/survey3/products/survey3w-camera-red-green-nir-rgn-ndvi. I am ...
- 99
0
votes
0
answers
13
views
RasPi Kubernetes Cluster and USB devices
I plan to cluster 4 raspberry pi 3b systems. If I use the USB in one of the non controllers will the controller acknowledge the device i.e. wifi.
I created a cluster using kubernetes. I am new to ...
- 1
0
votes
2
answers
22
views
Powering 3 sensors from one 5v pin
I am powering 3 different sensor (a temperature sensor, an IR transmitter and an IR receiver) on my Pi. I would like to use the same 5V pin to power all three.
I connected a jumper onto the 5v pin, ...
- 111
0
votes
0
answers
7
views
afpfsd fstab/automount issues
So I have read what few questions I can find on a problem with afp and am stuck. I can probably work around this, but am curious enough about why it isn't working that I wanted to poke the community ...
0
votes
0
answers
10
views
Attribute: 'ModbusIOException' object has no attribute 'registers'
I try to follow exactly this video https://www.youtube.com/watch?v=ZlHqEOmvW6M
You can have a look what I do : https://drive.google.com/file/d/1LenDiJVxT8wQUOlMbdDZ_VkIzqLvHmLJ/view?usp=sharing
I will ...
- 1
2
votes
2
answers
54
views
Sudo still works despite removing my user from group
I just installed the April 4th 2022 edition of Rasberry Pi OS and added a root password in addition to my user password. I also did..
deluser <userme> sudo
I tested my new security adjustment ...
- 177
0
votes
0
answers
9
views
Installing Uctronics LCD35 software
Does anybody have experience with the Uctronics B0106 LCD 3.5" Display? I have made several attempts to install the driver software, with varying results. But now I'm stuck. I am following these ...
- 99
1
vote
3
answers
45
views
What options exist to manipulate voltage using a Raspberry Pi, above 5v?
I have a model train set which runs on 0-12v based on the position of a rotary encoder. I would like to have somewhat granular, digital control over the voltage on the track.
So far, I'd implemented ...
- 111
1
vote
1
answer
30
views
How to connect to ethernet when plugging in cable?
I have a raspberry pi 3 that is connect to my home network using wifi.
But I have another network that is LAN only.
What I want:
When I plugin the LAN cable, I want the pi to disconnect from the wifi ...
- 11
1
vote
2
answers
36
views
Can't access internet after setting static IP via eth0
I have a raspi image that I use to duplicate other pi's, sometimes I want to have more than one of them connected to my network so I can test things all at once. However, they get confused on the ...
- 13
0
votes
0
answers
15
views
Raspberry Pi 4 With camera and PIR sensor - Script issue
I have this code for detecting movement and recording said movement. This is my code:
import RPi.GPIO as GPIO
from picamera import PiCamera
import time
from datetime import datetime
GPIO.setmode(...
-1
votes
0
answers
17
views
Clone full raspberry sd card on another [duplicate]
I have a running raspberry pi with some software installed.
It works fine.
I have some extra empty sd cards and an usb-sd adapter.
Is there a way to put the empty sd card on a raspberry usb port (with ...
- 103
0
votes
0
answers
21
views
Increasing value as PushButton switch is keep on being pressed [closed]
For now I'm doing a project involving a Raspberry Pi and a push button. I managed to control LED with the push button using PWM where as we pressed the button, the duty cycle value increase. However, ...
-1
votes
0
answers
22
views
Problem connecting Arduino with Raspberry Pi using UART [duplicate]
I'm trying to connect my UNO board with my raspberry pi 3 using the UART pins on both.
I'm sending the data from the Pi board to the UNO board.
The following code is being used for the application:
On ...
1
vote
1
answer
41
views
GPIO only outputs 1.8V when using Bluedot
I have setup a basic circuit to control a relay using a Raspberry Pi 4B. I have tried controlling it with both a push button and the Bluedot app. When implementing with the push button, the GPIO pins ...
1
vote
0
answers
31
views
Raspberry Pi and RFM69HCW (Adafruit) not working - SPI used (URGENT)
I am working on a project, and I was trying to get the Pi 4 working with an RFM69HCW module. I tried using spidev for this, and read the spidev documentation. I followed the steps but I keep getting ...
- 11
-2
votes
1
answer
35
views
Is it possible to use an old phone as a display for a Raspberry Pi?
I am trying to turn an old phone into a portable Raspberry Pi. I want to wire a Raspberry Pi Zero W into it's display and battery. Is this possible? If so, how do I do it?
0
votes
0
answers
18
views
Desktop failed, booted into tty1
UPDATE-- while working on the problem I've noticed that on bootup, Linux generates 2 messages to display on the console before the "Rasbian GNU/Linux 11" prompt. Those are 1st: "[ 4....
- 177
0
votes
1
answer
27
views
Raspberry Pi more durable SD card, how? [closed]
I've heard that SD cards on Raspberry Pi's are very susceptible to defects
because the Raspberry writes very often to the SD card and this
SD cards are not designed for frequent write cycles. Is there
...
0
votes
0
answers
35
views
Logging data from High Precision AD/DA board using Raspberry Pi 3B
I have a High Precision AD/DA board from waveshare with Raspberry Pi 3B (running on Raspbian). With this setup, I get a sampling rate of above 20KPS at my terminal display.
However, I can write only ...
0
votes
0
answers
21
views
My raspberry pi shows supported = 0 detected = 0 when I connect my camera
My camera was running alright on my pc before, but after connecting my lcd touchscreen with Raspberry Pi 3B+ and when I try running the command vcgencmd get_camera I get supported = 0 and detected = 0....
- 1
0
votes
1
answer
14
views
using serial port ttyAMA0 as primary port for rs485/modbus; permissions blocked
I cannot open /dev/serial0.
I selected "turn on serial port" and "do not run a console on serial port" in raspi-config.
The /boot/config.txt contains no reference to "console&...
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