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Questions tagged [pi-3b+]

Use for questions specific to the Raspberry Pi 3 Model B+

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Unable to use Uart and Bluetooth in Rpi3 with audio output simulatneously

I am using Rpi 3b+ and I am trying to use the Bluetooth and UART simultaneously. with ls -l /dev: Serial 0- ttyAMA0 Serial 1 - ttyS0 I had to use the UART(for reading coordinates in gps) and ...
Aryan's user avatar
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0 answers
14 views

Blue screen appearing on webcam server of raspberry pi.?

Motion version 4.3.2 is used. If i edit the configuration file according to version 4.1.1 will it work? or is there anyother solution
zig zag's user avatar
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0 answers
22 views

Problem when testing module DAC MCP4922 with Raspberry Pi

I'm encountering an issue while testing a custom-designed DAC module that utilizes an MCP4922 chip as its primary processor. The vendor provided C language test code for ESP32-S3, but I intend to test ...
Hien_lee's user avatar
0 votes
2 answers
50 views

RPi randomly shutting down, maybe due to GPIO?

I am running a Rpi 3b+ headless, mostly for Pi-Hole now. Nothing external connected, not even a monitor, a mouse or a keyboard. But because it runs PiHole, and my DHCP clients use it as domain server, ...
unsafe_where_true's user avatar
0 votes
2 answers
17 views

Latest Pi3B+ board I2S mic and amp does not work

I have tried installing AdaFruit I2S Speaker and Mic on some newly bought Raspberry Pi 3 Model B Plus Rev 1.4 The install is not working anymore: The Speaker say it is installed but the sndrpii2scard ...
Alex Johnson's user avatar
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0 answers
14 views

Route all internet to OpenVPN tunnel, allow local traffic, in physical plug-and-play system

I have a raspberry pi and multiple hosts that I would like to connect to a VPN in a physical manner, i.e. I would like to be able to plug my devices into one (unmanaged) switch and have them connected ...
pamo22's user avatar
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0 answers
7 views

Kernel patch for xenomai

I want to have xenomai RTOS on my raspberry pi 3B The xenomai ipipe-arm patch with rpi-linux as I see the linux version is 6.1.y and ipipe-arm patch does not have latest patch. I'm trying to patch the ...
Dreak duan's user avatar
0 votes
1 answer
14 views

Can a Pi3 be used as an RS232 to TTL Level Shifter?

I have a couple of Pi 3's here, and have to recover an Iomega NAS. Normally I would use a USB device and have the cables connected from a laptop, run up putty, communicate over the usb serial port to ...
The Britalian's user avatar
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0 answers
15 views

Waveshare 13460, GSM HAT doesn't power on

Got this guy waveshare, which stopped powering ON after the first run(which was successful). The power LED is ON, but nothing happens after I press the PWRKEY. I got other identical module which turns ...
Denys's user avatar
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18 views

Broken micro usb solder pads on pi 3 B+

I have picked up these for 6.5 dollars each. Top one is in decent condition i can solder some usb ports and use it but the below one has some issues with micro usb port. Solder pads and traces are ...
Bepo-san's user avatar
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22 views

Why has 64GB SD RPi Bullseye OS card "lost" half it's capacity after opening on PC

I attempted to set up a RP print server using Bullseye(32) on RP 3B+. There were issues that pointed to an i386 problem (...for another day..). I read Bookworm supported i368 so I decided to start ...
Shawangunk's user avatar
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0 answers
32 views

Net monitor - RBP3+ setup

Good day everyone. I am looking to get some use out of my RBP3 model b as I have only used retro pie on it before and I feel it is a waste, I have since then setup a Desktop pc for emulation etc., I ...
Gridmstr75's user avatar
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0 answers
21 views

How use microphone sound level to start arecord and or aplay

I start a simple project which use 2 raspberry. Both have microphon and speaker, and a button. The button starts the aplay and arecord commands for both of raspberry. And the full duplex communication ...
wanwan's user avatar
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0 answers
22 views

Raspberry 3B+ booting from SSD into emergency mode

I have a s Raspberry Pi 3B+ acting as a borg backup server. To make it more reliable I would like to switch from a SD card to booting from SSD. I have been using rpi-clone to migrate the SD card ...
Olf's user avatar
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1 vote
0 answers
64 views

Transmit data from LoRa connected to Raspberry Pi

I am working on a project related to data transmission between nodes and a gateway. Currently, I am using 2 ESP32s and 1 Raspberry Pi 3B+ as nodes, and another Raspberry Pi 3B+ as the gateway. The ...
Hien_lee's user avatar
0 votes
1 answer
45 views

sysfs pwm: corresponding pins and LED driving

Using a Raspberry Pi 3B+ with Linux raspberrypi 5.10.103-v7+ #1529 SMP Tue Mar 8 12:21:37 GMT 2022 armv7l GNU/Linux I would like to drive an LED with pwm. There are two couples of GPIO pins which ...
BowPark's user avatar
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0 answers
55 views

Freezing in Raspberry Pi 3B+

I would like to inquire about the circumstances under which the Raspberry Pi 3B+ may experience freeze when connected to multiple devices via an Ethernet gateway (each of these devices having ...
Hien_lee's user avatar
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0 answers
50 views

Raspberry Pi boot time issue

I am using Raspberry pi 3b+ and trying to reduce the boot time from power-on, till the GUI is shown(desktop mode). What basically happens is after power-on it takes some time to show the splash screen ...
John Mist's user avatar
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1 answer
44 views

Problem in route when not using the usb 4G dongle

I tried to plug in my E3372h Huawei modem, it was recognised automatically as an eth1, and the route -n showed 192.168.8.1 as default gateway, substituting the 0.0.0.0 default route accordingly (why?)....
Nick's user avatar
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0 votes
1 answer
157 views

Raspberry Pi ignoring wireless interface when wired interface is present

I have a Raspberry Pi 3B+ connected over ethernet to Network X, which is not connected to the internet. It's also connected using the WiFi interface to Network Y, which is connected to the internet. ...
smallpepperz's user avatar
0 votes
2 answers
723 views

switch to a 64 bit mode?

I have an old B+ which I think is 32 bit but curious if this can be switched to a 64 bit mode?? Does this info help at all? $ lscpu Architecture: armv7l Byte Order: ...
bbartling's user avatar
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-1 votes
1 answer
39 views

my Raspberry Pi 3B+ stops booting some time after work

my Raspberry Pi 3B+ stops booting some time after work. Different manifestations: either only the red LED flashes, or the green one blinks 4 times. This starts to show up after I reboot the board. ...
Danila's user avatar
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109 views

Raspberry pi 3b+, 3 green flashes, no display at all

my raspberry pi 3b+ was used to catch flightradar 24 signals. Suddenly it stopped working. On close visual inspection there were signs of water droplets close to IO pins. Now it won't boot. Red light ...
S Sarkar's user avatar
-1 votes
1 answer
62 views

GPIO 2 Shut Down Not Working

I have a Pi 3B+ with an adafruit matrix bonnet. Im trying to shutdown the Pi with a single pole double throw switch I had laying around. I'm currently able to get the power on working through GPIO 3. ...
VictorC's user avatar
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0 answers
54 views

Raspberry pi OS crashing

I am using raspberry pi 3B+ for a project. I have installed the bullseye which is currently the OLD STABLE. The raspbian mirror that I am using is: http://ftp.tsukuba.wide.ad.jp/Linux/raspbian/...
John Mist's user avatar
0 votes
0 answers
40 views

Can't get simple assembly code to run on 3B+ board

I am writing a bare metal code to run on GPIO 4 on raspberry pi 3B+ .section .init .globl _start _start: # pin 4 for 3B+ ldr r0, =0x3F200000 mov r1, #1 lsl r1, #12 str r1, [r0, #...
Ahmed's user avatar
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-2 votes
1 answer
37 views

Cannot install openCV in Raspberry Pi 3 model B+ where source list is Jessie

This is for the project the board is provided from our college we are trying to install openCV on Raspberry Pi 3 model B+ but we cannot install cmake and openCv. But we have encountered an error . one ...
manik's user avatar
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0 answers
44 views

Case for multiple different versions of pi

Firstly, I'm not building a cluster, but due to lack of space, I just want to put my Pis into one case where they can share power and ethernet (POE) I currently have a Pi 3B and 4B with plans on ...
ouroboruss's user avatar
-1 votes
1 answer
221 views

Fastest Way to Flash OS Image to Raspberry pi SD card

I want to Flash OS Image in a Much Faster way , In network Boot Mode, Currently i am using DD Command to Flash OS to 32 GB SDCARD on Client raspberry pi 4 board, its taking 10mins for 6.5GB image size,...
abhi's user avatar
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0 answers
50 views

Are there different versions of raspberry pi 3B+? [duplicate]

I have one 3B+ card that was bought some time ago (maybe ~1year). I have been using this as a testing PC. Yesturday I recived two new 3B+ cards (rough visual inspection they look the same as older). ...
Confused_tester's user avatar
0 votes
0 answers
112 views

Raspberry Pi 3B+ freezes on cron reboot

I set up a cronjob on my Raspberry Pi 3B+ (1GB RAM) to reboot every morning, which worked fine for over a year. For three days, however, the RPi has been crashing immediately after reboot. By “...
Pixelcode's user avatar
  • 101
0 votes
0 answers
39 views

Building a LoRa Gateway to capture all spreading factors and all bandwidths on Raspberry PI

As the title suggests, I have a substantial task at hand, so I'm unsure if I'll be able to cover everything in this message. However, I'll attempt to provide links to related questions if needed. I ...
Andy95's user avatar
  • 101
0 votes
0 answers
62 views

HCIUART not working after Kernel Upgrade

For some experiments with BLE I did manually a kernel upgrade of a Raspberry Pi 3B+ by using (example; I tried a few versions of the official GitHub repository): https://github.com/raspberrypi/linux/...
bilaljo's user avatar
  • 101
0 votes
0 answers
96 views

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 ...
Srini Vasan's user avatar
0 votes
1 answer
31 views

Raspberry Pi 3 model b+ does not give any output [closed]

For some reason my Raspberry Pi 3 model b+ does not want to boot and does not give any output signal. I tried several SD cards with fresh OS on them. What I noticed is that the green LED shows the ...
user avatar
0 votes
1 answer
296 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, ...
Apoorv Mittal's user avatar
0 votes
1 answer
732 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 "...
DOSed_And_Confused's user avatar
0 votes
0 answers
59 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 ...
Dims's user avatar
  • 175
-1 votes
1 answer
42 views

Raspberry Pi 3B cannot connect to wifi

I was trying to connect to wifi from my RPI3 running Ubuntu 22 server. This is my conf file /etc/wpa_supplicant/wpa_supplicant.conf Ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev ...
Himanshuman's user avatar
0 votes
0 answers
372 views

Unable to install mongodb on Ubuntu 22.04 on Raspbbery Pi 3B

So first I tried to install the latest version of mongodb on my raspberry pi running Ubuntu server 22. But as I was going through other answer the hardware config of RPI3 does not support latest ...
Himanshuman's user avatar
-2 votes
1 answer
501 views

turning on or off a gpio pin

Is there someone that knows how to simply turn on or off a gpio pin? I don't understand why rpi have to make it so hard. I hope someone gives me an answer, ask me if you don't understand the question. ...
newguy's user avatar
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0 votes
0 answers
18 views

dpkg fatal error while installing libxmlsec1:armh package

I am getting the following error while executing the following code on raspberry pi 3B+: sudo apt install --reinstall libxmlsec1:armhf It is to be mentioned that, I am using this code after removing ...
Mehta G Agarwal's user avatar
1 vote
0 answers
32 views

Problem controlling 3 servos of different types [closed]

I had a remote developer do code for 3 servos to control a mechanism. He made sure to aquire similar hardware. Rpi4 and 16channel pwm driver. He used 3 sg90 servos. I have 1 sg90 and 2 smaller servos....
Bob's user avatar
  • 11
0 votes
1 answer
169 views

DC Motor + goBILDA Speed Controller + Raspberry Pi 3b+ : Moves clockwise but won't move counterclockwise

I appreciate any help in this puzzling situation - I'm at a loss here. As part of a Robotics project, I'm trying to control a motor with a Raspberry Pi. The exact components I'm using are: A ...
Diego Alves's user avatar
0 votes
0 answers
15 views

first boot, login with ssh, only default user, no keyboard [duplicate]

I freshly installed Raspbian on my new Model 3 B. My Pi has an external touch display, which works, but I have no USB keyboard. Therefore I'd like to connect with my Pi via ssh to set it up and ...
Nepumuk's user avatar
  • 101
0 votes
0 answers
32 views

Problem Using Python CAN with Pi Can 2 Hat

I hope to find some answers here regarding a program of mine that doesnt seem to work! It is a modified version from https://rb.gy/blrhk . I am using the RPi in conjunction with an arduno uno with a ...
Paul Boutsiadis's user avatar
0 votes
0 answers
392 views

Raspberry 3B+ Wifi not works anymore also with new OS/Sdcard.. broken chip? Please help!

EDIT: On suggestions of @milliways I'm editing the question since he says that all the stuff I posted is irrelevant, and I have to "start fresh". I installed again a new fresh image of ...
Rafpigna's user avatar
0 votes
0 answers
54 views

Raspberry Pi 3B+ has erratic network connections (both Ethernet and Wifi)

Running a Raspberry Pi 3B+ for several months. The week or so, both the Ethernet and the Wifi started cutting out frequently for short periods. At first, I thought it was just dropping packets, but a ...
bpleat's user avatar
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0 votes
1 answer
97 views

Why can't I SSH into my Raspberry Pi 3b+ after a variable period of time?

On boot, I can successfully SSH into my pi. Then when I exit the session, I can immediately SSH back into it but if I wait some variable length of time (usually a few hours but sometimes more and a ...
occrg's user avatar
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0 votes
0 answers
43 views

PostgreSQL directory on SSD

I have a Raspberry Pi 3 on my network with PostgreSQL installed on it. At first, I had some tables installed on it, and saved on SD, and it worked perfectly. I had enabled entrance from the network ...
aris99's user avatar
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