Questions tagged [pi-3]
For questions that apply specifically to the Raspberry Pi 3 and not other/all models.
3,527
questions
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2
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646
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UART usage with Ubuntu PI3 Model B
Can someone tell me the steps what I need to do tu get a serial communication to work?
I have a raspberry pi 3 model b rev 1.1 with Ubuntu Server 20.04. I need to communicate with a sensor via serial ...
- 121
0
votes
1
answer
581
views
Unable to connect to the raspberry pi through SSH
I have a raspberry pi 3 with Debian os and I am unable to connect to it via ssh through VS code.The pi has already been configured and has a username and password.
The raspberry pi shows the message ‘...
0
votes
0
answers
27
views
WEP Hotspot help [duplicate]
I’d like to play some of my DS games online with WiiMiFi but I need to get a wep hotspot and I’d like to know what I need to set up to get one going
I have a Raspberry Pi 3
-2
votes
1
answer
52
views
I want to power RP3B+ with gpio but not sure about the circuit
I got a 4 battery holder (4-Way 18650 Battery Holder from Dfrobot)
And I'm wondering do I need a resistor to power the rasbery pi via gpio 5v pin.
Or do I need something else for this power supply
The ...
- 1
0
votes
0
answers
67
views
WiFi Direct connection peers limit on Pi4 4Gb
After setting up wifi direct starting from official image "Raspbian GNU/Linux 10 (buster)", i've developed a python script to automatic accept incoming request connection via wps_pin.
At ...
2
votes
2
answers
102
views
In what way can I connect my two Raspberry-Pi to a INA219 sensor at once using GPIO? This is more of a hardware question/ No Code was used
I am trying to figure out how to connect a INA219 sensor to two Raspberry Pi's. I am currently using 4 wires that connect the main Raspberry Pi and the INA219 sensor. There is no code, I am connecting ...
-1
votes
1
answer
39
views
spi driver works on pi 3 and pi 4, but not on pi cm4
I have a spi driver for an nrc7292. When I load it on a pi3 or 4 it works every time, but when I load it on a cm4 it only loads correctly about half the time. What could possibly be different? Once ...
- 19
0
votes
1
answer
214
views
I2C communication on Raspberry Pi 3B using smbus2
I'm trying to connect my energy measurement IC with Raspberry Pi 3B using the I2C protocol. I'm using sudo i2cdetect -y 1 to detect the connected devices and it is correctly showing the address(7-bits)...
1
vote
0
answers
342
views
Boot ups but display rainbow screen on Raspberry Pi 3
I'm new in RPi, so can't resolve an problem. How can I fix a Raspberry Pi with Rainbow screen? I'm using Raspberry Pi 3 B with Raspian 10 (show below)
Linux raspberrypi 5.10.103-v7+ #1529 SMP Tue Mar ...
- 11
1
vote
1
answer
37
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
votes
1
answer
32
views
Raspberry Pi 3B not booting anymore.How to update firmwire?
I have a RPi 3b in my stack. Suddenly it stopped working correctly and after another OS flash it was dead. Now is there a way to revive it?
- 1,808
0
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1
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91
views
Non-english character file names get changed on their own
Same Problem Mentioned Here
I am running Raspbian GNU/Linux 11 (bullseye) on a Raspberry Pi 3 Model B.
I have some files on a FAT32 formatted USB drive, which stores data for a Jellyfin library. When ...
- 111
0
votes
0
answers
908
views
Can't connect to pigpio at localhost(8888)
So I don't think this issue is related necessarily to my code, because I'm thrown this error even running some formally working code examples from my textbook (Practical Python Programming for IoT):
%%...
- 13
1
vote
1
answer
567
views
I'm unable to install FLAC on my Raspberry Pi 3
I'm trying to make a tts program on my Raspberry Pi 3 and I'm using Googles TTS API which requires that I have FLAC installed on the Pi. When I attempt to install FLAC, I'm thrown this error-
pi@...
- 13
0
votes
0
answers
158
views
code not detecting ads7830 even though i2cdetect shows the address
I am trying to run Motor.py code from Freenove. I can see that my ads7830 IC is up and running
i@raspberrypi:~/Freenove_Kit/Code/Python_Code/13.1.1_Motor $ i2cdetect -y 1
0 1 2 3 4 5 6 7 ...
- 165
1
vote
1
answer
136
views
No library found for processing.io error error when running Processing code in raspberrypi
I am trying to run a Sketch program using Processing 4.0. The code is from FreeNove raspberrypi kit.
I am getting this error
No library found for processing.io
No library found for processing.io
No ...
- 165
-1
votes
1
answer
592
views
Unable to update packages due errors of corrupted cache files
When I my trying to update packages by "sudo apt update" I have got the errors:
Hit:1 http://raspbian.raspberrypi.org/raspbian bullseye InRelease
Hit:2 http://archive.raspberrypi.org/debian ...
- 1
0
votes
2
answers
2k
views
Camera not working on Raspberry Pi 3B Running Debian Bullseye
Pi Model: Raspberry Pi 3B
OS: Debian version: 11 (bullseye)
Camera: Arducam Lens Board OV5647
I have connected my Raspberry Pi to my camera module and attempted to check its functionality with ...
- 19
0
votes
0
answers
156
views
Filebeat on raspberry pi 3
I wanna know if is it possible to install filebeat from elasticstack (I need it to get logs file from an indoor camera) on raspberry pi 3 and if yes does anyone have a tutorial or can teach me the ...
3
votes
1
answer
509
views
Raspberry Pi 3 Model B won't boot but SD Card and board are fine
My RPi has worked fine for a while but recently it stopped booting, only the red LED is on while the green ACT one is not.
I'm sure board is fine because I put another SD Card from another RPi and it ...
1
vote
0
answers
69
views
Problem with reading GPIO input value - photoeletric sensor
Good night!
I've got some problems with GPIO input values in my code (Python). I'm using a Raspberry Pi model 3, and RPi.GPIO as GPIO module. I'm tring to get the signal values of a photoeletric ...
0
votes
0
answers
73
views
Raspberry Pi 3B MF-MSMF250/X Polyfuse
In the schematic diagram here https://datasheets.raspberrypi.com/rpi3/raspberry-pi-3-b-reduced-schematics.pdf there is MF-MSMF250/X polyfuse. What will happen if the polyfuse get damaged for some ...
0
votes
0
answers
132
views
Getting an error while trying to set up LIRC
I'm a new Raspberry Pi 3 user and barely understand anything, I'm only familiar with Windows based platforms so I'm a little lost. I'm currently following a tutorial on how to set up lirc_rpi to send ...
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1
vote
1
answer
1k
views
Raspberry PI SSH randomly closes connection
Initial Connection to the RPi is flawless, even with VS Code Remote Dev. But after some time (without special command) the RPi closes the connection ("Connection to 10.0.0.11 closed by remote ...
1
vote
1
answer
114
views
WPA2 Enterprise Connection Drops on Raspberry Pi 3B when Set-Up is Transitioned to Headless
After a significant amount of struggle I managed to connect my Raspberry Pi 3B to my university's WPA2 Enterprise network, UCR-SECURE, in the traditional set-up with a monitor, keyboard, and mouse; ...
- 19
0
votes
0
answers
83
views
Raspberry Pi 3B USB Over-current Condition
How does Raspberry Pi 3B USB protects from over-current condition? What specific device is used to determine such condition?
0
votes
1
answer
266
views
Monitoring power consumption of a Raspberry Pi 3B+ device
I am wondering if it is possible to measure the power being consumed by the CPU core (ARM chip) of a Raspberry Pi? Specifically, I want to monitor this power consumption for various applications that ...
- 39
0
votes
0
answers
62
views
Installing aarch64-elf for barebones compilation on raspberry pi
I'm following this tutorial but it doesn't explain how to install aarch64-elf. Can someone explain how to do this on the Raspberry Pi 3B(running raspberry pi OS).
The command that will be run with it ...
- 13
0
votes
1
answer
181
views
Difference between Pi3 and Pi4 RUN headers?
I am trying to disable boot when pi4 plugged to power. I found some usefull answers, but that answers are about pi 3. I am using pi 4 and I must connect together 2 RUN header pins. In pi 3 RUN header ...
- 11
0
votes
0
answers
745
views
Android Lineage OS - Not working on my 7inch Screen
i'm new to using this group. Wondering if i could have some advice please?
I have installed Android Lineage OS to my Pi3, it works on my normal screens i have no problems. But my problem is when i ...
0
votes
0
answers
2k
views
emergency mode starts by default on raspberry pi 3
When i try to start the raspberry pi 3 .. it gets stuck on:
You are in emergency mode.After logging in, type “journalctl -xb” to view system logs, “systemctl reboot” to reboot, “systemctl default” or ...
- 1
0
votes
1
answer
93
views
Cannot take picture with Canon SX 510 powershot connected to Pi3 via gphoto2
when I execute this:
gphoto2 --trigger-capture
This returns:
*** Error ***
Sorry, your camera does not support generic capture
ERROR: Could not trigger capture.
*** Error (-6: 'Unsupported operation')...
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-1
votes
1
answer
272
views
Rx, Tx/UART not being detected by Pi? What is wrong?
I'm working on Serial communication between the Raspberry Pi and the Arduino, with the Raspberry Pi serving as master. I connected, using a logic level shifter, Arduino's Rx (Software Serial was used ...
- 89
0
votes
1
answer
133
views
Button.when_activated event is not firing even though Button.is_active is setting correctly
Thanks in advance!
I am using a Pi 3B to detect activation of a sensor on my model railroad layout. The sensor by default only offers a rising edge detection scenario. I decided to go with gpiozero ...
0
votes
2
answers
135
views
Raspberry Pi would not start
Hi, when booting Rasberry PI I get following error messages and RPI does not start. I have took out SD Card, run chkdsk on Windows machine, did not detect errors. Is there anything I can do to fix it? ...
- 1
0
votes
1
answer
8k
views
libEGL warning: DRI2 failed to authenticate
I am running Bullseye on an RPi 3. In attempting to run a GNURadio application I get the subject error.
During my investigation I have found several references to this issue on this and other forums.
...
- 1
0
votes
0
answers
47
views
Pi 2/3 (Buster installed) to Pi 4 migration, what is to consider?
I found many comments, that the migration from pi2/3 to pi4 requires some changes, mainly because the boot partition has to be larger there.
But in my understanding, the boot partition size isn't ...
- 1
1
vote
0
answers
290
views
How to edit coherent_pool setting via cmdline.txt
I have a problem with connecting multiple USB devices to a RPI3B+. I found this solution which suggests that setting coherent_pool=2M in cmdline.txt resolves the issue:
https://github.com/raspberrypi/...
- 21
0
votes
1
answer
1k
views
Raspi3b how to get boot from USB to work?
I have a Pi3b and an PI3b+
Also I have 2 USB Sticks with different versions of Raspian
both Sticks boot on the PI3b+, none is booting from the Pi3b
I followed the procedure to set the usb-boot flag (...
- 121
-1
votes
1
answer
416
views
Raspberry Pi wont boot (Act led blinking 4 times)
I have 2 Raspberry`s (Raspberry Pi 3 B+).
One is working fine and well and if I want to turn on my other Raspberry Pi(with the same SD Card what I used for the other) the ACT LED is just blinking 4 ...
- 1
0
votes
2
answers
252
views
Additional i2c_gpio is not detected on Ubuntu Server 20.04 / RPi Zero 2 W / A+
I'm trying to enable the second (GPIO-based i2c) on RPi Zero 2 W, Ubuntu server 20.04 to connect the following sensor. Note that the primary i2c pins are physically occupied as RPi is used as a hat ...
- 101
1
vote
0
answers
44
views
Can i use a I2C PWM expander as a Digital output module?
i want to use a "IS31FL3731" I2C PWM expander to dim my LED Strip. This expander does have a lot of PWM outputs and i also need a lot of Digital outputs. So is it possible to use a few PWM ...
- 71
1
vote
0
answers
447
views
Screen resolution on RPI3B+ too small when connected with Teamviewer + crashes
I am running 3xRPI4 and 1xRPI3B+ with the bullseye release from 30.10.2021 and after the update function from raspi-config.
The RPI4 work fine, however, I cannot fix the small screen resolution of the ...
- 197
0
votes
0
answers
131
views
multiple reverse SSH tunnel with same port on same server
I'm looking for a solution for connecting to multiple remote computers through reverse SSH tunnels from one computer/software on the same port.
I have remote1 and remote2 where I cannot open network ...
1
vote
1
answer
98
views
pigpio Not allowing simultaneous waveforms on separate GPIOs
I am trying to send a set of pulses equally spaced to 4 stepper motors drivers (on different GPIOs) at the same time.
These pulses I am wanting to be around 10 microseconds in width so more precise ...
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1
vote
1
answer
50
views
I2C Interfacing with HIH6130
I'm trying to read data from sparkfun's HIH6130 Breakout for measuring humidity and temp data. Following this instructable (though without the i2c shield for the pi), the provided python code just ...
-1
votes
1
answer
277
views
llvm version 11 and librosa error
Best regards i need to download librosa to raspberry pi so first of all i downloaded virtualenv and created environment and installed llvm with:
sudo apt-get install llvm
pip3 install llvmlite==0.37
...
- 1
1
vote
1
answer
42
views
Raspberry PI 3 mariaDB and python issue with expanding columns
I am having an issue that I don't really have programming experience to resolve. I have an application that deploys an SQL table that may have more or less columns depending on user input. I am ...
- 21
0
votes
1
answer
542
views
Raspberry Pi, how can i turn bluetooth on and off over Python script?
i want to play either a sound, which is saved on my raspberry pi as a MP3 file or send a song from my phone over bluetooth to my Pi. So i found out, that if i run a song over bluetooth and play one ...
- 71
2
votes
1
answer
1k
views
apt issue, unmet libc6/libc-bin dependencies
I was in the middle of upgrading to Bullseye from Buster when my SSH session failed, and I couldn't ssh into the machine anymore. I rebooted it, and now am presented with this problem.
I have ...
- 159