Questions tagged [pi-3]
For questions that apply specifically to the Raspberry Pi 3 and not other/all models.
3,490
questions
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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 ...
- 149
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10
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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 ...
- 149
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0
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14
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LCD display is blank
A bit like this question, but different... I bought this display and the MIPI to HDMI board. It all connects fine, but I get nothing on the display. The board is getting power (green led), but I don't ...
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-1
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27
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Connecting a RPi to an Arduino Motor Shield
My friend and I are building a robot and we need to connect an Arduino Motor Shield to a Raspberry Pi (picture added below) but we don’t have access to a Breadboard and neither can we get one, does ...
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18
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Error when installing filebeat on Raspberry PI 3
I'm trying to install filebeat on my raspberry pi 3 following this tutorial https://www.gunnarleffler.com/posts/raspberry_pi_filebeats/?fbclid=IwAR1v-agodz-...
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0
answers
28
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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
1
answer
62
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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 ...
- 11
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0
answers
18
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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 ...
1
vote
1
answer
37
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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
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0
answers
61
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 ...
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answers
22
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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 ...
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answers
35
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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 ...
- 1
1
vote
1
answer
21
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 ...
- 11
1
vote
1
answer
18
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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; ...
- 11
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0
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30
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?
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31
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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 ...
- 31
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17
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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 ...
- 1
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0
answers
20
views
Raspberry Pi split screen with two connected screens to spi
Good day.
I'm fairly new at raspberry Pi and would like to connect two SPI displays. After connected I want to make use of a camera to project the video on both screens. Therefore the one screen needs ...
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0
answers
21
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Running Raspberry PI buildroot image in qemu
I am trying to build a linux image for raspberrypi3 with buildroot and run it on qemu. Once the make process is done i can copy the sdcard.img file into a SD card and correctly run the OS on a real ...
0
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1
answer
31
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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 ...
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answers
93
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 ...
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answers
135
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 ...
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0
votes
1
answer
20
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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
45
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
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votes
1
answer
54
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
0
answers
20
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PI 3 doesnot see hdmi audio or audio jack ... reports no audio device
i have searched other reports. I have tried putting dtparam=audio=on in config.txt.
There is no 'audio' option in raspi-config/advance
pi@raspberrypi:~ $ cat /etc/os-release
PRETTY_NAME="...
- 1
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votes
2
answers
36
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
0
answers
954
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
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0
answers
29
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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
59
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
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35
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RPi 3 as media center powerful enough for video services?
I have now been running my RPi3 for years as a media center. I have always been very happy with it. I used it mainly to organize and play my considerable music library using Kodi.
Lately I started to ...
- 101
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votes
1
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105
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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
56
views
raspberry pi wont boot (Act led blinking 4 times)
I have 2 raspberry`s (raspberry pi 3b+).
One is working fine and well and if i want to turn on my other raspberry (with the same SD card what i used for the other) the ACT led is just blinking 4 times ...
- 1
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0
answers
15
views
Keep UART Bluetooth enabled during boot with USB Bluetooth adapter installed
I have a Raspberry Pi 3 Model B Rev 1.2 with a built in Bluetooth adapter on the UART, if I plug in a USB Bluetooth device, both Bluetooth adapters are enabled and work. However, if you reboot the RPI ...
- 101
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votes
2
answers
72
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
23
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 ...
- 61
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0
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70
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 ...
- 177
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0
answers
39
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 ...
2
votes
1
answer
35
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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 ...
- 23
1
vote
1
answer
28
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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 ...
0
votes
1
answer
111
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
0
votes
1
answer
32
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 ...
0
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0
answers
16
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Measuring Hardware Performance Counters with perf_event_open on RPi 3
I am under RPi 3, Linux Rpi 4.9.80-v7+, perf version 4.9.82, and I have a deterministic code with a fixed input data, that runs a sort algorithm.
I need to capture the runtime information of this code ...
- 1
0
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0
answers
47
views
Does 2x singstar microphone with usb adapter work with raspberry pi 3?
I am planning to make my raspberry pi into a karaoke machine using probably either ultrastar or pikaraoke. There is 2x singstar microphones with usb adapter (used) selling in game shop near my place. ...
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0
answers
31
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Raspberry as an I2C MASTER [duplicate]
This is the link I am using to make Raspberry PI as an I2C slave, I see it uses the bscXfer which is OS timing independent. This is cool.
Raspberry as an I2C SLAVE
Similarly, I want to make raspberry ...
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0
answers
7
views
MoemManager.service stops booting my Raspberry Pi
My Raspberry Pi 3 just stop while boot with message in loft bottom conner ModemManager.service. How to make start my Pi again?
- 171
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32
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Raspberry Pi 3B v1.0 How many pieces made?
I would like to ask if someone knows a bit more about this version. For example, how many pieces were there made of v1.0? You can see that on the PCB there is an alien from space invaders. Why? Is ...
- 11
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1
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107
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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 ...
- 61
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0
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369
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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 ...
- 119
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0
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38
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What does cmd = 0x84 does in ADS7830 ADC
What does cmd=0x84 do in ADS7830 ADC. Its binary value is 10000100
class ADS7830(ADCDevice):
def __init__(self):
super(ADS7830, self).__init__()
self.cmd = 0x84
self....
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