Questions tagged [pi-3b+]

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

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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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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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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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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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1 vote
2 answers
147 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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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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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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-2 votes
2 answers
51 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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1 answer
130 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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1 answer
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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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2 answers
23 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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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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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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1 answer
280 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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-1 votes
1 answer
176 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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1 answer
315 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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1 vote
2 answers
334 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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-1 votes
1 answer
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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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1 answer
1k 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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1 answer
151 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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1 answer
52 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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1 answer
401 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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0 answers
732 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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1 vote
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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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1 vote
1 answer
136 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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104 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 ...
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1 answer
701 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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2 answers
187 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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2 answers
131 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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-1 votes
1 answer
51 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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2 answers
314 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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2 answers
84 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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Just plugging the USB with OS in it doesn't make the RPI3B+ boot

Flashed RetroPi OS into a flash disk. I plug it to the nearest USB slot to the board and the Ethernet. When I connect the power cable and the hdmi, it doesn't boot. I can't test if my Pi still works ...
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28 views

Turning off a Raspberry Pi 3 B+ not connected to Mac

I've seen lots of questions about safely turning off the Raspberry Pi but I haven't found what I'm looking for. My Raspberry Pi is connected directly to the power adapter and not to my laptop. What is ...
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0 votes
1 answer
17 views

RPi3 would not start (red led on always), but then it started without any explanation

Yesterday, electricity went down at the location where I have an RPi3 setup. After electricity came back, the pi did not start. I went to see what's happening with the pi, and indeed, the red led was ...
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2 votes
2 answers
269 views

Do I need a base resistor for a transistor? [closed]

All I plan to drive a 51 ohm LED using the pi's 5v pin using a 2n2222 transistor connected to the GPIO. Do I need a resistor on the base pin of the transistor or can I connect it directly to a GPIO ...
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527 views

Unable to import pyserial or serial in python 3.4.2

I am not able to import pyserial or serial module in a python script. Package is properly installed (I think) using the following commands: sudo apt-get install python3-serial pip3 install pyserial --...
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1 vote
1 answer
592 views

Serial port fails after some time

I use a RPi 3b to request and receive float values over serial from an Arduino Nano (fake). For that I use python and pyserial. Arduino Loop: if (Serial.available() > 0) { String req = Serial....
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1 answer
67 views

USB Wifi not working on boot

I am using TP-WN727N usb wifi module with raspberry pi 3b+. It using MT7601U driver. Wifi is working fine if I reconnect it but not detecting after reboot.
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66 views

Raspberry pi ethernet cable no longer working

I was working on Raspberry pi3+ for few days and didnt have any issues today unexpectedly after connecting it the ethernet LEDs didnt light up i tried 2 different ethernet cables the issue persisted ...
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0 answers
65 views

While trying to install a fan, I accidentally plugged fan's GND and 5V pins to RPi 3B+ pins 2 and 4 (both 5V)

Instead of plugging the fan in pins 4 and 6, I accidentally plugged it in pins 2 and 4. The Pi immediately shut down. There are no signs of life other than the red LED that is on all the time. Is the ...
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0 votes
2 answers
352 views

433MHz RF communication between Arduino + Raspberry Pi

I bought a 433MHz receiver and transmitter to send data from a Raspberry Pi 3 to an Arduino Uno. I searched the internet for tutorials, Arduino StackExchange and Raspberry Pi StackExchange but I did ...
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1 vote
1 answer
89 views

Raspberry Pi cooled with a Peltier cell [closed]

I've an RPI3B+ mounted in an IP65 box and placed inside a greenhouse. Obviously the CPU becames really hot during the day and it reaches 80°C (even after the installation of the small heatsinks). I ...
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0 votes
1 answer
146 views

Pi 3B+ External Activity LED

How can I add an external activity LED to Pi 3B+? Like to my Pi casing.
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-1 votes
1 answer
709 views

Install Oracle on Raspberry

0 I need help!! I'm doing a school project where we have to install Oracle on our Rapberry pi 3. We have already download from Oracle website Basic Package(RPM) -SQL*Plus Package(RPM) -SDK Package(RPM)...
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How to change the menu icon 2021

i have a Raspberry Pi 3 model B+ I have installed Raspbian OS on it. So i have looked it up but all i can find is outdated guides. i have tried to replace the launch image in /usr/share/raspberry-...
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1 answer
194 views

Can i power my Raspberry pi 3 b+ with a micro-USB to USB thats connected to a USB charger?

I read in the manual, that u should charge it with 5V and 2.5 amp, but im not sure. I already read, that a undervoltage can damage the pi and that USB 3.x would be enough, but I still dont know how ...
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-1 votes
1 answer
253 views

Rpi 3B+ "Unsupported board type" Flashing Power Light

I have a Pi 3B+ that wont boot. It's a "new" unit that I received as a gift a few years ago and am just now taking it out of the box and trying to use it. I've tried several OS images, but ...
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1 answer
26 views

Pi addressing ping to the wrong destination [closed]

I have a private network that requires end to end connectivity pi 1 -> device 1 -> device 2 -> pi 2 The traffic is getting all the way from pi 1 to pi 2 However, the return doesn't work ...
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323 views

Raspberry Pi 3+ / 4 wifi connection problem

I am setting up the RPis 0W, 2, 3, 3+, and 4 for some tests. For the connection to the internet, I use WiFi. The setup worked as expected till the Pi 3+, which refused to connect to the router. Then I ...
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