Questions tagged [pi-3]

For questions that apply specifically to the Raspberry Pi 3 and not other/all models.

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gstreamer pipeline doesn't play when using `omxh264dec`

I would like to decode H.264 video with gstreamer, taking advantage of hardware acceleration on a Raspberry Pi 3 Model A+. My pipelines work when using avdec_h264, but when I substitute this for the ...
Ian Mackinnon's user avatar
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0 answers
45 views

Playing audio using pwm

I am a beginner and confused regarding playing sound over pwm on raspberry pi 3. I have added the following line in /boot/firmware/config.txt: dtoverlay=audremap,pins_12_13 I have my speaker connected ...
ConfusedBeginner's user avatar
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0 answers
14 views

UART Issues without USB Power

I'm experiencing an issue with UART communication when I attempt to power the RPi over the 5V pin instead of the USB port. Here's a rudimentary look at my setup: RPi 3B -> Teensy 4.1 GND -> GND +...
Joshua Taylor's user avatar
-1 votes
1 answer
25 views

Python script started by crontab ends immediately

I'm trying to start a python script using crontab that runs in the background. I want to restart it every few hours, but for now I'm trying to test it every minute to make sure the crontab is working. ...
ad01's user avatar
  • 1
0 votes
1 answer
49 views

How to tell if my raspberry PI is working (Home assistant USB booting)?

I am trying to run HA on a Raspberry PI 3B via USB but I am having a lot of issues. My Setup: Raspberry PI 3B SATA to USB adapter with external power 500GB SATA SSD 5V 3A Power supply (up to 20V in ...
Andrea Zaffanella's user avatar
0 votes
0 answers
13 views

RasPi3B+ won't read SD cards

As stated the old rpi 3B+ worked fine until 1 boot where it no longer read the SD cards. (ACT light not lighting up at all, PWR light constantly on.) Happened after I tried swapping from dynamic IP to ...
Corran O's user avatar
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0 answers
47 views

GSM1: No answer, put_command expected (OK)|(ERROR)|(0)|(4)

smstools3's /var/log/smsd.log keeps giving: GSM1: Checking if modem is ready GSM1: -> AT GSM1: Command is sent, waiting for the answer. (5) GSM1: No answer, put_command expected (OK)|(ERROR)|(0)|(4)...
Geremia's user avatar
  • 149
0 votes
1 answer
28 views

Multispectral camera

I would like to use a NoIr camera and an rgb camera in order to do calculations with the near-ir band and the RGB bands. Is there a way I can get near-ir values from the NoIr camera?
mdansfo's user avatar
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0 answers
27 views

How do I boot only off a USB drive (with no SD card inserted)? [duplicate]

Do I need a MicroSD card for my Raspberry Pi 3 B, or can I simply use a USB flash drive (and no MicroSD card)?
Geremia's user avatar
  • 149
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0 answers
40 views

Achieving high FPS on multiple still image captures

Trying to achieve a good 30 fps on Pi 3 Model B using the old 5MP camera module 1.3. Recently downloaded OS Bullseye, and using PiCamera2 on Python. The goal is to achieve: Good FPS ~30FPS for a 100~...
Khaled's user avatar
  • 101
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0 answers
9 views

Connecting pi to a ion counter having rs232 port

i having two radio modules which are connected with pi, one will be attach with computer and the other will be attach with ion counter having rs232(i am using rs232 to uart converter) i have an app ...
Aiyaz Ahmad's user avatar
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0 answers
18 views

Raspberry 3 to tether internet to the ETH port from the wi-fi

I would like to use the raspberry to bridge the WI-FI network and the ETH0 port and then connect a router to create my personal network with internet access (if possible DHCP on the router) accessible ...
Alessandro Marturano's user avatar
0 votes
1 answer
50 views

I Can't Connect To WiFi anymore

I followed some instructions from the raspberry pi site for updating my OS, upon reboot I can no longer connect to WiFi. My WiFi icon in the menu is saying there are "No wireless interfaces found....
Jessica's user avatar
0 votes
2 answers
91 views

Incorrect baud rate on RPI 3 serial port

I have written an app to communicate with an intelligent UPS. It works fine on a Raspberry Pi 2, but seems to operate at the wrong baud rate on a Raspberry Pi 3 model B running Raspbian bullseye. This ...
JavaLatte's user avatar
  • 119
1 vote
1 answer
214 views

Pi 3B+ and USB Power to SSD

I have a Pi 3B+ which I'm using as a home media server - it has been connected to an old 2TB Seagate HDD (with its own external power supply) for a couple of years and running openmediavault software. ...
Alan's user avatar
  • 113
1 vote
1 answer
108 views

Correct cross-compilation options to run binary on Raspberry 3 model B

I have Raspberry Pi 3 Model B with me. I am developing on Ubuntu Linux laptop computer. I want to cross-compile so that the binary may run on Raspberry. My Raspberry info: pi@raspberrypi:~ $ cat /proc/...
AlphaParticle's user avatar
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0 answers
20 views

How to connect 64+ light sensors to a board?

Making a robot to play chess with physically. I've embedded light sensors into the board but I'm not sure how to manage that much input? What would I need to manage each input individually. (Rasp Pi3)
Justin Miller's user avatar
0 votes
0 answers
149 views

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. ...
user156889's user avatar
-1 votes
2 answers
68 views

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 ...
ThN's user avatar
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0 votes
1 answer
47 views

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 ...
abhi's user avatar
  • 23
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0 answers
44 views

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) ...
Zabbidou's user avatar
1 vote
1 answer
174 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 ...
abhi's user avatar
  • 23
1 vote
0 answers
152 views

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 /...
abhi's user avatar
  • 23
1 vote
2 answers
117 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 ...
Pranav Joglekar's user avatar
0 votes
0 answers
64 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
0 answers
24 views

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.
Gideon Weiss's user avatar
0 votes
1 answer
49 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, ...
Martzy's user avatar
  • 3
0 votes
0 answers
33 views

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 ...
python_student's user avatar
0 votes
1 answer
176 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
533 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
1 answer
684 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 ...
jksmurf's user avatar
1 vote
1 answer
63 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 ...
Tim's user avatar
  • 13
0 votes
2 answers
267 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@...
cryseascr's user avatar
0 votes
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.
Aysu Mammadli's user avatar
0 votes
0 answers
56 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
0 votes
1 answer
42 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 ...
Rohit Gupta's user avatar
0 votes
0 answers
91 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. ...
maja95's user avatar
  • 1
0 votes
0 answers
21 views

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). ...
camp's user avatar
  • 1
0 votes
3 answers
168 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 ...
embedtime's user avatar
0 votes
0 answers
46 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, ...
TallChuck's user avatar
  • 101
-1 votes
1 answer
351 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 ...
Tom's user avatar
  • 39
0 votes
0 answers
107 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 ...
Mustafa's user avatar
0 votes
0 answers
17 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 ...
Jack's user avatar
  • 1
0 votes
0 answers
100 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 ...
Bert's user avatar
  • 1
0 votes
3 answers
5k 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: ...
raddevus's user avatar
  • 101
1 vote
2 answers
2k 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 ...
Mohammad Sadegh Aslanpour's user avatar
0 votes
1 answer
87 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
Shathira Lakdilu's user avatar
1 vote
2 answers
879 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: ...
Jannik's user avatar
  • 23
0 votes
1 answer
88 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 ...
Magezilla's user avatar
-1 votes
1 answer
180 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 ...
JakesMD's user avatar
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