Questions tagged [pi-3]
For questions that apply specifically to the Raspberry Pi 3 and not other/all models.
3,544
questions
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21
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Raspberry Pi Camera v2 not detected for Octopi on Raspberry Pi 3
I've searched all over the internet for a solution to my problem, but it seems like every route comes up short for me. Again, I am using a Raspberry Pi 3 with a Pi Cam v2, and using PuTTy as my SSH.
...
0
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0
answers
24
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Optimal way to detect a lot of pressed buttons [closed]
A complete pi noob here... I'm a software engineer, so I can more or less understand everything that's going on and should be done from software perspective, but I have no idea as to how evaluate ...
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-1
votes
2
answers
39
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Can a gpio pin be read as an input without voltage going through? [duplicate]
I have pi 3 and I want to use one of the pin as an input. It will be connected to tapped off wires from a switch that has 2 volts going through it when it is closed. So I want to feed this 2 volts as ...
- 1,063
0
votes
1
answer
37
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How to Access corrupted Raspberry Pi SD card using Ethernet Connection
I have Raspberry PI with Corrupted SD card, showing Kernel Panic Message, is there any way i can access it without removing SD card from SD card SLOT, raspberry pi is connected with Ethernet, which is ...
- 13
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0
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28
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BIAS attack on Raspberry Pi
I am trying to recreate the BIAS Bluetooth attack on my Raspberry Pi 3. I have successfully configured it as an audio sink (to give the connection a purpose and to impersonate my bluetooth speaker) ...
- 1
0
votes
1
answer
42
views
How to Convert 32GB Cloned SD card Image to small size ISO file
I have have 32GB SD card Cloned Image of Raspberry PI, I want to make it small size as Flashing back to another SD card takes more time using DD command, I need a small size image so that i can place ...
- 13
1
vote
0
answers
39
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How to Change Raspberry pi 3 Boot order to Network boot with SD card Inserted
In Raspberry Pi 3 board, I am able to boot from network by changing the boot order to Network Modes as below :
sudo apt-get update
sudo apt-get upgrade
echo program_usb_boot_mode=1 | sudo tee -a /...
- 13
0
votes
1
answer
32
views
Unable to use my SIM900A Mini GSM module with my Raspberry Pi 3 B
I'm trying to connect my Raspberry Pi 3B with my SIM 900A Mini GSM module ( https://acoptex.com/wp/wp-content/uploads/2019/12/SIM900Apro3.jpg ).
I'm facing the following issues ( maybe they are ...
0
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0
answers
21
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How to install Veloview for Velodyne on Rasberry pi 3 model b plus?
I have installed 64 bit rasberry pi os on rasberry pi model b plus, I have downloaded Veloview tar.gz file from their website that was under the linux 64 bit category. I am worried whether there is ...
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0
answers
12
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Code for reading values from ML8511 and MQ131 sensors
I'm looking for a way/libraries to read the values from the ML8511 and MQ131 sensors with a MCP3008 ADC on Raspberry Pi 3B using Python.
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1
answer
39
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, ...
- 3
0
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0
answers
22
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WS2812B addressable led does not turn on after a certain point
I control thousands of leds using WS2812B led with Raspberry Pi 3. But since I have two different led types (both ws2212b), I use two different pins. Logically, I connected a 5V 10A power supply to ...
0
votes
1
answer
32
views
Brother Printer not in the CUPS list
I am using Raspberry Pi 3B+. I am making my printer - Brother DCP-T300 wireless using Raspberry Pi. But, I am not able to make it run.
In the option of choosing the make, Brother was not present.
So, ...
0
votes
1
answer
62
views
Troubleshooting "Failed to start dhcpcd.service on all interfaces" - Buster on Raspberry Pi 3
We have been testing "PiSignage", an opensource digital signage solution, on a Raspberry Pi 3 running Buster. We have a webserver that is hosting a webpage we intended on using as an "...
0
votes
1
answer
189
views
Missing /sys/class/leds/led0 and /sys/class/leds/led1 directories on Pi3 Model B Rev 1.2?
I have two RPis one 3B Model 1.2 one 4B. I set up both as subnet routers for Tailscale and wanted to turn off both the Power/Activity and Ethernet LEDs (all the LEDs). I put PiOS 64 Lite (Bullseye) on ...
- 3
1
vote
1
answer
43
views
GPIO behaviour on booting RPi
I have a question regarding the GPIO status during the boot process.
As a bit of background, I'm currently building an automated sprinkler setup using a raspberry pi and an 8-relay board.
The board ...
- 13
0
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0
answers
61
views
Raspberry Pi 3 – Any way to upgrade to 64 bit OS
I read that Raspberry Pi now offers an 64 Bit OS for Raspberry 3B.
Mine is running already for quite a while and it took me some time to configure my software (main part: Nextcloud) correctly, so I ...
- 101
0
votes
2
answers
97
views
Failure when trying to run MongoDB on Raspberry Pi 3 B & Ubuntu 23.04
I am trying to install & run MongoDB on my Raspberry Pi 3 B running Ubuntu.
After installing and trying to start it, I get this status:
srv_user@raspserver:~$ sudo systemctl start mongod
srv_user@...
0
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0
answers
18
views
Raspberry pi zero video playback running too fast [duplicate]
Pls help. It is sooo urgent. I am experiencing issues with video playback running too fast on your Raspberry Pi Zero. I use VNC video player. And when i save bvideo it displays so fast.
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30
views
How is it made that NIC has name eth0 not usb0?
Raspberry Pi network card is internally a USB card. Why then it has name eth0 and not usb0?
I need to find a code, which is responsible for this.
I am simulating Raspberry Pi with QEMU and having a ...
- 175
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votes
1
answer
34
views
Does the green blinking led mean that the Pi 3 is working?
I have been using a Pi Hole for some years and it stopped working some months ago. I had assumed that the power pack in my rack had died.
But it is still not responding to its IP address, on my desk ...
- 273
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48
views
Raspberry pi power up button and i2c devices
I have a ads1115 connected to my i2c pins of the raspberry pi. The i2c pins are pin 2 (i2c-SDA) and pin 3 (i2c-scl).
Additionally i want to power up and shutdown my pi with the WAKE_ON_GPIO. Example. ...
- 1
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0
answers
21
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halt the raspberry when power supply connected but not when GPIO3 is shorted to ground
For context I am using a raspberry PI3 but in the end might use a PI4 (but docs says they should behave the same).
I changed config.txt to allow my raspberry to wake from a halt state (with GPIO3). ...
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0
votes
3
answers
106
views
How to connect raspberry pi to other device over ethernet?
I am new to pi development so please excuse any stupidity of mine.
I have set up a Raspberry Pi 3 running Raspbian Bullseye and connected it to WiFi. This is being done on a college campus, so I ...
0
votes
0
answers
27
views
U-boot bare-metal crash on eret
I've been playing around with bare metal programming on a Raspberry Pi 3B, and I recently started using u-boot, rather than moving the SD card back and forth. However, the following startup code, ...
- 101
-1
votes
1
answer
88
views
Bullseye lite Static IP attempt still using DHCP
I am having issues with the latest Bullseye lite distro (May 4, 2023) on a 3B. I have an earlier bullseye desktop version on a 4B that is working well, but I can't get the lite version to set a ...
- 39
0
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0
answers
62
views
Raspberry PI 3 and MOSFET IRF520 driver module to control DC Fan speed
I have been trying to connect a 5v dc fan with MOSFET IRF520 module and rp3. When I give 5v of rp3 to the SIG of module and connect the module with an external 9V battery, the fan works.
But, when I ...
- 1
0
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0
answers
14
views
Act led not on but raspberry pi works fine with retropie
I have a raspberry pi 3b v1.2 that has retropie running on it, the red led lights up nice and bright but the green ACT led does not. It runs retropie fine but I can’t tell when my file transfers are ...
- 1
0
votes
0
answers
36
views
RPi Bullseye: libcamera-jpeg does not write to USB drive, while libcamera-vid does
I'm running a Python script on a Raspberry Pi 3 B+. This script automatically takes video and stills using the Raspberry Pi camera and should write it to an external USB drive. I've mounted a USB ...
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0
votes
1
answer
1k
views
Why does the Chromium browser just flash (see gif) when I start it? How can I fix it?
When I start the Chromium browser on my RPi it just flashes (no nav bar ever appears).
Here's a gif (video) of what it does:
I'm connecting via VNC.
Details of My Installation
Distributor ID: ...
- 101
1
vote
2
answers
482
views
How to reboot/restart a Raspberry Pi using its GPIO pins through another Pi?
I have a cluster of Pis that sometimes one of them fails and I cannot access it remotely until I come to the device and unplug and plug it again. I want a solution that if a Pi fails, I can remotely ...
0
votes
1
answer
57
views
My raspberry pi is upgrading for like 2,5 hrs and it is stuck at 57% but still removing some files.Is this normal?
enter image description here
Removing 'diversion of /boot/overlays
1
vote
1
answer
464
views
ENOSPC Error with Camera Module V3 on Raspberry Pi 3 B
I bought an Pi Camera Module 3. I have an Pi 3 Model B Rev 1.2.
I get the ENOSPC error when trying to use the camera with raspistill:
pi@raspberrypi:~ $ raspistill -o t.jpg
mmal: ...
- 23
0
votes
1
answer
60
views
Cannot access Headless Raspberry pi
I got a problem with Ubuntu 20.04. I have disabled every service on the Pi 3b not needed. It used to be a wifi connected device, then I plugged it onto my new router with a cable and it was recognized ...
0
votes
1
answer
100
views
How to detect the position and rotation of objects in Python?
I'm building a robot that needs to detect the position and rotation of multiple trained objects from a single image. For this I'm using my Raspberry Pi 3B with Raspberry OS 64-Bit.
I tried Localizer ...
- 109
1
vote
0
answers
203
views
How to boot Raspberry 3b from SSD?
I have
Raspberry Pi 3b v1.2
Smartbuy Splash 128GB SBSSD-128GT-MX902-25S3
SATA to USB 2.0 cable
I would like to boot Home Assistant OS (img) from SSD. The same system boots well from SD card.
I have ...
- 141
2
votes
1
answer
703
views
Tiny 11 on Raspberry Pi 3 Model B
Today I tried getting Windows 11 to run on a Raspberry Pi 3 Model B using Tiny 11.
After I downloaded Tiny 11, I downloaded and ran the Raspberry imager from www.worproject.com and put it on a micro-...
- 23
1
vote
1
answer
41
views
Can't access server over Wi-Fi
When trying to ssh or ping my Raspberry Pi server on my LAN I get a "No route to host":
$ ping 192.168.50.249 ...
- 11
1
vote
0
answers
78
views
Bare metal USB on the Raspberry Pi 3B
I have been trying to learn the working of USB drivers through the on-board port on the Raspberry Pi 3B(BCM2837). I'm referring to this repo for the source code: https://github.com/xinu-os/xinu/blob/...
2
votes
1
answer
152
views
Struggling with I2C devices
I had 2 devices connected using I2C on my Rasp pi 3b.
A clock RTC8563 and a humidity sensor AHT20. Both were working.
I mucked about with the wiring, and did something wrong, as I smelled smoke before ...
- 129
2
votes
0
answers
81
views
spi overlay driver don't run due to shared pin11
I'm trying to run old FLIR Lepton driver on Raspberry Pi 3 Model B v1.2 (2015).
FLIR SW driver here: https://www.flir.eu/developer/lepton-integration/lepton-integration-raspberry-pi/.
PDF guide here: ...
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2
votes
0
answers
38
views
Real time video processing in raspberry pi 2
Hi i am planning to do real time image processing using opencv python for a differential drive bot using raspberry pi 3 B, what are the factors do we need to consider(like video stabilization, etc...) ...
- 29
3
votes
0
answers
211
views
Arm Arch Linux 'startx' displays black screen on Raspberry Pi 3
Context: I recently got started with Arch Linux and the whole building your own distro thing. So I put Arch Linux Arm version on my Raspberry Pi 3 Model B v1.2 from the Arch Linux Arm project. I put ...
0
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0
answers
39
views
Raspberry pi 3 not reading SD cards
I have a raspberry pi 3 v1.2 that is not reading SD cards. I DO have another pi 3, and that one reads and boots with the SD card in question without any issues whatsoever. On the working pi, I can ...
- 11
1
vote
1
answer
63
views
How to send a pulse to 3.5'' audio jack with GPIO
I have a raspberry pi 3 model B+ and I have been trying to send a pulse to the small audio jack port, Is this the correct way please?
import RPi.GPIO as GPIO
from time import ...
- 119
-1
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2
answers
60
views
Turn ON without a screen or delay after power ON
I have RaspberryPI 4 and a few 3 that are hooked up to TV.
If power goes out, I have to grab a ladder and turn ON TV first and then hook up raspberryPi for it to start booting.
Is there a way to turn ...
- 1
0
votes
0
answers
107
views
Cannot access Pi through web browser after certain uptime
I have set up my Pi 3+ with an apache2 server, which works in my browser with both the IP and its hostname raspberrypi.local. I can also access the Pi through SSH. However, after some uptime (maybe a ...
- 1
1
vote
0
answers
132
views
Rasberry Pi 3B+, PiCamera 1.3, Camera not detected
I have attached the ribbon cable from the Raspberry Pi CSI port to the Camera, and have ensured the connections are not loose.
I use the vcgencmd get_camera command and it returns:
supported=1 ...
- 11
0
votes
0
answers
80
views
Can not display anything but white screen
Hi i'm new to raspberry pi.
and I want to see screen with tft 2.4inch lcd .
I tried to connect raspberry pi to the lcd throught the connector but it only show white screen without raspberry pi . so i ...
- 1
1
vote
0
answers
84
views
SD card slow on raspberry pi 3b, identical card is fast on nanopi r4s [closed]
I have a Raspberry Pi 3B and a NanoPi r4s. I bought identical SD cards for them -- high endurance cards by Gigastone. The rpi is running Ubuntu Server 22.10 and the nanopi is running Armbian 22.11.1....
- 111