Questions tagged [pi-3b+]

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

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12 views

RF433 Rpi Serial cannot read signals in Python

I am running this code. import serial import time serialport = serial.Serial('/dev/serial0',baudrate=1200, timeout=3) t = "ttt" while True: serialport.flush() serialport.write(t....
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16 views

Problems with downloading Retropie, Flash Failed

Good evening / morning to whom might read, let me explain, I tried to download Retropie for a bit of fun but it might seem that there might be a problem with the Sd card, the software or my adaptor. ...
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19 views

HDMI seems to be dead

We have almost 300 RPi3B+ with monitors connected via HDMI. These RPis are supplied with power via GPIO pins 2 and 4 (5V, 3A). Also from the same PSU monitors for these RPis also supplied with power (...
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1answer
33 views

Unable to connect Raspberry to Wifi

I want to connect my Raspberry to Internet through Wifi, but it can't detect any Wifi. I've read that only Pi 3 and + models can do that, but mine is a Raspberry Pi 3 Model B Plus Rev (see picture). ...
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11 views

Enable i2c kernel support on ubuntu mate 18.04

I am having issues trying to enable i2c support for the raspberry pi 3B + with ubuntu mate 18.04. I need to do this in order to drive a few servos. The problem is the prompt doesn't show up to enable ...
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1answer
14 views

Rpi 3b+ No Display 7inch TFT-LCD Composite Display

I have 7 inch display which I used in my car almost 10 years back I want to use it with my Rpi3b+. I tried changing various display modes in config.txt like sdtv mode =0 and other numbers. None of ...
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1answer
41 views

Raspberry Pi Buzzer delay

this is my first raspberry pi project and it’s for university. I have a led, a button a buzzer and a servo motor connected, they all work perfectly fine. The idea is, when the servo motor is moved, ...
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130 views

Cannot enable camera

I've been trying to enable the raspberry pi camera on my new pi 3B with no success. I've tried updating. I tried raspi-config on the commandline, enabled the camera and rebooted. These did not work. ...
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1answer
39 views

Stepper motor, need forward, reverse and to hold weight

I am working on a project in which i would like to lift and hold open a small wooden door at a certain time of day and then lower it again. Right now I would be happy if I could just lower it. I can ...
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1answer
27 views

Show Raspberry Pi Infos on a webpage

I want to make a control-website and show raspberry pi information on that. I heard about flask, but is that the right tool, to get the cpu temperatur for example? Or how can I do that with php?
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1answer
26 views

Show data from USB to eink bonnet [closed]

So I have a RPI with a adafruit 2.13 eink bonnet installed onto my GPIO pins. Then I have a gearmo USB-RS232 serial converter plugged into my USB port then the RS232 connection is on a GPS receiver. I ...
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16 views

rpi 3: view video from webcam and display it with high resolution

I have raspberry pi 3 model B v1.2 I want to connect rpi to the TV and USB Web Camera and be able to display webcamera feed on the TV with some delay (10 sec). I have achieved this with python and ...
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1answer
53 views

Are there any suitable car race games for raspberry pi which don't take too much of space? [closed]

In my raspberry pi 3 model B+ , I've been looking for some car racing games that take up less space .Is there any games I can Install ?
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23 views

i2cdetect shows random addresses for VL53L0 device

I plugged the VL53L0 distance sensor to RPi 3B+ onto the I2C pins. Specifically, red to 3v3 Power, white to SDA, blue to SDC, and black to the ground (I left yellow and green unplugged). Now, ...
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25 views

Is there any way to run a Blu-Ray player with a Raspberry Pi 3 Model B+?

I realized the other day that instead of buying a new laptop for a single purpose such as this, I could possibly use my RPi3 B+. Unfortunately, I have not found any articles or contemporary mentions ...
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24 views

Creating a Wireless Access Point with an ethernet cable on the same subnet

I have a raspberry pi 3b+ that I’ve configured to act as an access point. I’ve followed the official Raspberry Pi documentation to accomplish this (See: https://www.raspberrypi.com/documentation/...
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19 views

Rpi3 stuck on rainbow screen on both cards after cloning of SD card

I had a working version of Openmediavault on Raspberry Pi 3b+ fully updated and confirmed to be rebooting without errors. I powered down, removed SD card and imaged onto a windows machine using win32 ...
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2answers
95 views

Why does the latest raspbian update disable some wifi frequencies?

I started with a fresh installation of Raspberry Pi OS Lite (Release date: May 7th 2021, Kernel version: 5.10) and checked wifi state with iw reg get iw list. global country DE: DFS-ETSI (2400 - 2483 ...
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1answer
65 views

Almost every GPIO input pin is showing up as pin 22 [closed]

EDIT: The problem ended up being that the ribbon cable going to my breadboard was rotated 180º. I was taking this into account, but doing so incorrectly. Once I correctly labeled the rotated pinout, I ...
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57 views

Remote desktop XRDP not working for Pi 3 Model B+

I would guess a similar question has been asked already, so any hint pointing me to this direction is welcome. It would be my third Pi install and out of the blue I can't connect via XRDP as on the ...
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2answers
45 views

Run a RaspbianOS system for rpi4 on rpi3b?

I have an OpenHab 3.1 installation on a raspberry 4 running. I'm currently using raspiBackup to create a full backup of the system and also having an .img file to restore it when needed via Etcher ...
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1answer
33 views

host proxying hotspot on rasberri pi b

I want to make my rasperry pi able to 1 host a wifi hotspot, with an external usb 2ndary wifi chip, and 2 redirect all clients through a socks5 proxy. I want to host a hotspot using the integrated ...
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1answer
25 views

Problem booting raspberry pi 3B +

Several years ago, I bought a raspberry pi 3B +. I would like to reuse it. I flashed raspian (https://www.raspberrypi.org/software/) onto an sdCard and I am using my phone's charger whose output is 5V ...
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2answers
22 views

Is Raspberry Pi 3 B+ power supplier compatible also with Raspberry Pi 2?

It seems that my Raspberry Pi 2 power supplier stopped working (the power led switchs on and off periodically). Due to this I was wondering if my current Pi 3 B+ power supplier can be used also with ...
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1answer
53 views

How can a Raspi 3B+ simply stop booting, and how can I recover it?

I've recently run into a strange issue with my fairly new (< 1 year) Raspi 3B+: Yesterday evening it simply stopped booting! The red LED shines, and the 3.3 V and 5 V GPIO pins still supply ...
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0answers
29 views

I recently installed the Remote-SSH VSCode extension, and I think it's causing my Pi to become unresponsive after random amounts of time

Background information: Previously, I used WinSCP+Putty to connect to my Pi on my home network, I do have it set up so I can remote in via SSH if I want to work on stuff from whatever location. I do ...
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1answer
63 views

How to control multiple Raspberry Pi from single server

Using raspberry pi 3B+ I am detecting RFID. I have done network booting of these raspberry pi in order to avoid the SD card corruption from Debian GNU desktop by following this link. Now I want to ...
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1answer
73 views

Why DHCP logs are missing in dnsmasq-Raspberry Pi-Unifi-esp8266?

I have a network made of Rpi, ubiquities, and esp8266. Raspberry pi is configured as the eth0 to eth1 router. Eth1 is made using a USB to ethernet converter. The Main ubiquiti is connected to the eth1 ...
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1answer
45 views

How to clone USB Boot drive to smaller SD Card

I am currently running on my raspberry pi 3B+, a headless install of Ubuntu server 20.04 booting off a 32 GB USB drive. However since i am only using around 4GB of the 32 GB Drive, I am hoping to ...
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49 views

How to deal with strange errors when starting remmina remote desktop client

When I launch remmina from the terminal I am getting a bunch of errors and I am not sure how to deal with them. pi@raspberrypi:~ $ remmina ** (org.remmina.Remmina:2749): CRITICAL **: 09:47:46.980: ...
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1answer
82 views

Controlling WS2812b LED strip produces inconsistent and uncontrollable output

Background I'm trying to control a single WS2812b LED strip from a Raspberry Pi. I've followed this tutorial from raspberrypi.com (with the exception of Prep & Installation step 4, because I ...
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69 views

Raspberry Pi Camera doesn't work properly

I'm using Raspberry Pi 3 Model B+. If I run vcgencmd get_camera it gives me supported=1 detected=1 If I run raspistill -o test.jpg the test.jpg file appear but gives this message mmal: ...
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1answer
28 views

Problem with Pyserial when using Xbee and GPS on rasp pi 3B+

i am currently trying to get some data from gps and try to send it through Xbee to a pc. To do this, i was using multiprocessing. At first getting the GPS data and sending data through Xbee was done ...
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1answer
408 views

Pi 3B+ aarch64 conda illegal instruction

I just installed 2021-05-07-raspios-buster-arm64-lite on my Raspberry Pi 3B+. uname -a outputs: Linux raspberrypi 5.10.17-v8+ #1421 SMP PREEMPT Thu May 27 14:01:37 BST 2021 aarch64 GNU/Linux But ...
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19 views

Raspberry pi freeze when i open chromuim

My raspberry pi freeze after using chromium for sometime with no reason. I open chromium at the beginning it works fine but then it stops working, the screen freeze, the green led it constantly on and ...
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2answers
74 views

Crontab function not executing

Hell My name is Patrick and a Rpi newbi. I have made this project" industrial strenght cat feeder" from the instructables website. Everything is working 100% aside from the crontab function. ...
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0answers
21 views

Getting undefined symbol: minor on loading chan_dahdi.so with asterisk 13.13.1 in yocto

I'm using poky-thud with meta-raspberrypi and meta-telephony, here I've installed dahdi-linux, dahdi-tools and asterisk 13.13.1, here in yocto image for raspberry pi kernel is 4.14.112 . when asterisk ...
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1answer
26 views

Recover zero-byte size file on attached USB storage

I have an attached USB hard disk drive on my Raspberry Pi with an NTFS file system used as a network-attached storage. My problem is after a while, some big files, like 2GB and up (usually ISO, Zip, ...
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1answer
67 views

How to find client signal strength from the Rpi command line?

I have a network made of Rpi, ubiquities, and esp8266. Raspberry pi is configured as the eth0 to eth1 router. Eth1 is made using a USB to ethernet converter. The Main ubiquiti is connected to the eth1 ...
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0answers
492 views

Failed building wheel for pandas on model 3B+

I'm trying to install pandas in a Python virtualenv on a RPi model 3B+, but its wheel fails to build. Pandas does however successfully build/install for the system Python (py3.7.3, pip 18.1). Could ...
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0answers
25 views

heartbeat sensor for pi

i want to measure the heartbeat using the pulse sensor. i connected the pulse sensor to a mcp3008 adc and the pi. this is the code i used from pulsesensor import Pulsesensor import time p = ...
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1answer
37 views

one wire ds18b20 showing no output

i connected a one wire ds18b20 temperature sensor to my pi 3b+.this is the code import time from w1thermsensor import W1ThermSensor sensor = W1ThermSensor() while True: temperature = sensor....
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44 views

3B+ won't boot from USB Hard Drive

I flashed Raspbian to a 1TB Samsung Hard drive, and when I try to boot it using a USB hard drive reader (which gets power from a barrel connector), The red light turns on, But there is no Yellow ...
0
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1answer
166 views

Raspberry Chromium v88 (88.0.4324.187) keeps crashing (Error code : 11)

I have problems with kiosk application on Raspberry. I'm using chromium as digital signage presentation. System was working fine, until few days ago. I get crash report Error code 11. From error log, ...
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2answers
47 views

Toggling GPIO via BCM2835 registers on RPi 3B+

I am trying to toggle GPIO directly by setting BCM2835 registers. This is the code i wrote for this purpose and I wonder why doesn't it work. If the approach is wrong, then how to access GPIO ...
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0answers
20 views

Cmake : interpreter and numpy virtual environment path problem

I am trying to install OpenCV 4 on a Raspberry pi b+ flowing this Article , Everything looks good until i come to Step #5 the outputs of cmake are different, even though i followed the previous steps ...
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2answers
58 views

Can't access my RPI 3 using SSH

I used to be able to SSH my RPI without difficulty but on resurrecting my PI and reinstalling Raspbian SSH does not work. I can ping the Pi OK. I have tried switching off VPN and avast but still no ...
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1answer
40 views

Maximum usage USB and GPIO power consumption

I use a raspberry Pi3B+ for a home automation installation. On which I have connected several peripherals. In particular an RFID reader and an OLED screen. But I notice that after a while, these ...
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2answers
89 views

Gigabit Ethernet on RPi3B+

I have a problem with my network interface. My ISP provides a 1000Mbps download connection, but doing a speedtest from my raspberry pi 3b + it stays below 10Mbps so I ran ethtool eth0 and I find that ...
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2answers
69 views

Any particular reason why my RPi 3B+ reports 20x worse results from Speedtest.net? [closed]

I have RPi 3B+ connected to exactly the same router as my PC (wired!). I have installed Speedtest.net client using this guide. When executing speedtest-cli --simple, I am getting nearly exactly twenty ...

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