Questions tagged [pi-2]

This refers to the quad-core Raspberry Pi 2 (currently only available as a "B" model with Ethernet and four USB ports), with 1 gigabyte of RAM.

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13 views

RPI2 with two WiFis works ok for single requests, browsing is impossible

I want like to create a simple WiFi booster with Raspberry PI. So I have RPI2 with two dongles: Ralink (rt2800usb) and Edimax (rtl8812au). pi@raspberrypi:~ $ lsusb Bus 001 Device 005: ID 148f:5370 ...
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Problem I2C when using BH1750 photoresistor

(Raspberry Pi 2, model B, V1.1 - buster OS - all updated / upgraded - smbus loaded on) Hi, I am quite new to the Raspberry Pi and recently I have hit a brick wall. I am trying to link the Raspberry ...
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connect multiple temperature sensors to rpi

I need to connect multiple temperature sensors to my RPI. can you, please, elaborate whether/how can this be done with this or this unit? or can you suggest other unit? I need to measure temp on the ...
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Can I upgrade my Python version with miniconda on Stretch or do I need to upgrade OS?

Need some advice here. I have an old RPI 2B with ARMv7 Processor rev 5 (v7l) running Raspbian GNU/Linux 9 (stretch). At the moment it's got python 3.4.3 and a lot of other packages installed with ...
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25 views

Raspbian Crashing on RPi2 | full screen goes to one (somewhat random) color when web browser loads heavy page

I've had this strange problem with my Raspberry Pi 2 for a long time now. I have it set up as a sort of third monitor for my main computer. I've installed Synergy and Redshift, then set the screen to ...
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lxde with debian 8 on pi-2

On the old wheezy OS, lxde was provided for the desk top. When you were looking through folders, you had a choice of how to view the files in the folder. (list,small icon,large icon,thumbnails, etc.). ...
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RPi 3B (not +) image on RPI 2

I have OctoPrint running on my Pi 3 Ok withou any issues. Should I be able to boot the same image on a Pi 2? David
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Getting a NRF24L01 module running with Java

I'm currently trying to make a NRF24L01 module work by using Java. I found this library that makes use of the JNI, but I can't get it to work. When I try to run the provided example code the ...
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32 views

Connecting 3 ultrasonic sr04 sensors, 4 infrared avoidance module to picon zero mounted on raspberry pi 4

Im begginer to raspberry pi, can you help me please? Im trying to connect 3 ultrasonic sensors + 4 infrared avoidance module to picon zero mounted on raspberry pi 4. Currently I have picon zero ...
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OMV on RaspberryPi 4 or Pi 2B+

Am new with raspberry pi and i try to make a nas with my pi using omv, i have both pi4 and p2b+. This are the step that i follow: Format SD Card with SD Card Formatter Download Raspbian Buster Lite ...
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1answer
70 views

How to Install TP-Link TL-WN823N V2 on Rasperry Pi 2?

I've got a Raspberry Pi 2 I'm trying to install a TP-Link TL-WN823N V2 onto. pi@raspberrypi:~ $ iwconfig eth0 no wireless extensions. lo no wireless extensions. pi@raspberrypi:~ $ ...
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1answer
43 views

Creating a network extender

Today I was hoping to setup a network extender. I want it to connect to my router via ethernet, and then share out that connection via WiFi, and stay on the same network. All of the tutorials I looked ...
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1answer
22 views

RFID and LED Script disables RFID reader until reboot

I have two simple scripts, which work individually. One simply lights an LED, the other reads RFID. Now I want to put them together, but seem to fail. Once this runs, I can't read RFID anymore until ...
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Can powering a DC motor through the USB ports of my Raspberry Pi Damage the Pi?

I'm working on a project that contains two DC motors and a Raspberry Pi, I do not have other components like Relay, Motor Drivers, transistors etc. I am aware that powering a motor directly from an ...
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1answer
65 views

Minecraft server not working

I want to run a Minecraft server from a Raspberry Pi 2. I already tried the 1.8.9 and the 1.15.2 versions. Both of them started, as expected. On my computer I tried to connect, but after a while, it ...
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is there an equivalent to the dkms tool in raspbian buster?

I am installing a wifi dongle on an RP2B and the only instructions I can find were for Linux Mint using: sudo dkms add ./rtl8188fu I get a command not found. How is this done in Raspian?
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Create website to control RaspberryPi remotely [closed]

I wanted to home automation for a long time. Basically what I want is a website through which I can control my raspberry pi GPIO pins and also read and display data from them on my website. I will ...
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1answer
108 views

How do I add a new source to /etc/apt/sources.list?

Doing $ sudo apt-get update gives E: Some index files failed to download. They have been ignored, or old ones used instead.. After doing some digging i found this Cannot connect to mirrordirector....
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1answer
39 views

Use Raspberry with two devices that require 3.3v pin

I'm planning a project with an RFID reader that connects to the GPIO pins on a RPi2 and will use the 3.3v pin. Additionally I wanted to add an active buzzer, which also would require an 3.3v pin. Is ...
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38 views

Connect Raspberry Pi with Official Arduino TFT Screen

I've been owning for a few years now this useful LCD screen from Arduino https://www.arduino.cc/en/Guide/TFT and I wanted to ask if it was possible to connect it to the Raspberry Pi 2. The official ...
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KNN Model, cannot import from Windows. What to do for Raspberry pi with Low RAM

I have a raspberry pi 2b with 1 GB of RAM. I want to train an ML model with about 6k images. I followed https://github.com/kevinzakka/blog-code/blob/master/knn/knn.py and I have a model that works ...
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Hardware PWM on Raspberry Pi 2 using .NET Core 3.1

I would like to use hardware PWM on a GPIO port to generate RC-5 IR codes with an IR LED. I read that .NET Core now has PWM support and that the Pi has at least one PWM-enabled GPIO pin, but I can ...
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59 views

Raspberry Pi requirement for water outflow detection from pump and switch off motor if no water coming

I have gone through this answer before i post question here, https://www.hackster.io/ben-eagan/raspberry-pi-automated-plant-watering-with-website-8af2dc https://mtlynch.io/greenpithumb/ https://www....
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Music player for my raspberry pi2

Is there a easy to use music player for a raspberry pi 2? I tried to download one on Google play, but all it did was highlight the install button. going to youtube and searching all the time takes a ...
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1answer
92 views

RPi 2: Could not communicate with wpa-supplicant

Like the title, I updated the Raspbian from Jessie to Buster, and when I restarted my Pi 2 Model B, wlan0 suddenly not associated, I noticed that could be my Wifi dongle problem. But when I get to ...
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17 views

Printer keeps printing the same document

I have an HP OfficeJet 8710 printer installed on my Raspberry Pi 4b on Ubuntu 19.10.1. Documents sent to the printer keep reprinting until I cancel them with cups on localhost:631. The same networked ...
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2answers
51 views

Multiple Wifi networks - can't connect with VNC

I'm using a Raspberry Pi 2 Model B with a wireless USB adapter, Raspbian jessie. Until today I only had the raspy connected to my home network, everything was fine. Now I have the necessity to bring ...
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0answers
50 views

Loopback SPI interface not working

I'm trying to do the loopback test for the SPI interface on my raspberrypi model 2 B V1.1, by following the intruction on this website : https://www.raspberrypi.org/documentation/hardware/raspberrypi/...
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132 views

PIVPN with Wireguards - Hide IP

i have a question: i installed PIVPN with Wireguard protocol. From my mobile phone, my endpoint is the my ip public and with a specific port, I reach out my VPN. Perfect! My data are encrypted between ...
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146 views

Having problems with ethernet on my PI2 running raspbian buster lite

first of all let me say I'm a beginner so assume I don't know anything. Okay, now my problem. I'm trying to set up my old PI2 to be a terraria server to play with some friends. Everything was working ...
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196 views

hostapd AP over both wlan0 and eth1

My hardware setup is currently: Router -> RPi (eth0) -> RPi (wlan0) -> subnet for my devices My desired setup is: Router -> RPi (eth0) -> RPi (wlan0 + eth1) -> subnet for my ...
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22 views

Can I run latest NOOBS on a Pi 2?

Can i run the current version of NOOBS on a Raspberry Pi-2? I have tried but it will not boot up.
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2answers
59 views

Protecting my Pi's GPIO pins when off

I have a Raspberry Pi 2 Model B and I am wondering if there is a pre-made solution, if I have to make it myself, or if it isn't an issue. For my project, the GPIO pins will be in constant use as ...
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1answer
202 views

Help with setting static ip

/etc/Interfaces auto lo iface lo inet loopback iface eth0 inet static address 192.168.205.159 netmask 255.255.255.0 gateway 192.168.0.1 allow-hotplug wlan0 iface wlan0 inet manual wpa-roam /etc/...
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2answers
177 views

Is there a conflict between raspbian/raspberrypi versions and python versions?

Can some version of python not run on some version of Raspbian? Is there some thing in the architecture of some version of Raspberry Pi that could make them incompatible with some versions of python?
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1answer
63 views

Raspberry pi 2b not booting after SD card was ejected while working

So, like the title says: My Raspberry pi 2b is not booting after the card was ejected while working. I was watching some Kodi media, then it froze, I realized that the SD Card was ejected (there is a ...
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114 views

How to emulate the u-boot with raspi2 on QEMU

By referred https://www.raspberrypi.org/documentation/configuration/boot_folder.md and What is the boot sequence? I am trying to run u-boot by emulating Raspberry pi 2 on QEMU. I followed https://...
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59 views

ALSA lib bluealsa-pcm.c:219:(io_thread) PCM FIFO write error: Broken pipe aplay: pcm_write:2053: write error: No such device

Bluetooth Error Device: Rpi 2 2014 Model B Ver 1.1 also Rpi 3 Bluetooth Headset JBL Everest Elite 750NC Bluetooth Adapter Panda Wireless PBU20 command line: aplay -D bluealsa:DEV=C8:DF:84:20:...
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1answer
48 views

Troubleshooting my project xorg error. Services not booting

My /etc/X11/xorg.conf is empty i did have a 99-calibration.conf I put in /etc/X11/xorg.conf.d/ but I had to make the xorg.conf.d/ dir so i migth have already messed up before. Now starting the pi ...
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17 views

Is it possible to access an Android Phone's volume permission and control it with RaspberryPi?

I want to have a wireless network using RaspberryPi where it connects with an Android phone, accesses its volume permission and turns it down. Any inputs on how to go about this?
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1answer
155 views

writing into fifo file and reading it

1.Transmitter side code: A)Recording audio into fifo file(no need to create fifo file separately arecord command will create fifo file): import os os.system('arecord -D plughw:1,0 -d 0 --rate=19200 ...
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1answer
38 views

Can a voltage at a GPIO pin with no mode set harm the pi

I have a Raspberry Pi 2 Model B, and I plan on using the GPIO pins to detect whether a voltage is present or not. However, the circuit that controls the voltage levels runs independently from the pi, ...
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1answer
74 views

polling gpio raspberry 2 doesn't work

i'm writing a library for my raspberry pi 2 for gpio control. I'm trying to test a function for read a gpio driven by interrupts with sysfs but i can't do that my function stops in poll() function. ...
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1answer
182 views

TFMini Plus LiDAR not working

I'm trying to work with a Benewake TFMini Plus Lidar sensor in a RaspberryPi. I'm using a USB-2-TTL serial adaptor, which is working properly according to the tests I've ran. I'm testing the sensor ...
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2answers
105 views

Issues running Kivy and Flask together on Raspberry Pi 2 with touchscreen

Setup Kivy 1.11.1 Flask 1.1.1 Python 2.7.13 Issue I have an issue running together a Kivy app and Flask as thread on a RPi2 with a touchscreen. It is similar to the issue mentioned in this post ...
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1answer
189 views

Unable to reset password on Raspberry Pi (Raspbian Jessie)

I'm trying to follow the directions in https://howtoraspberrypi.com/recover-password-raspberry-pi/. (For future reference in case that tutorial disappears, here is the steps up to the point which I ...
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28 views

Raspberry pi wireless WiFi

So I had an idea and wanted to know if it was possible and how to tackle it. So I was thinking if I had a raspberry pi plugged into my router at home via Ethernet cable, could I create some sort of ...
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15 views

bridge repeater unsure what to call it

ok here is the set up router 1 ~~ pi ~~ router 2 ~~~ rest of the home router 1= public wifi (aka library) i need the rpi to pick the signal up using a [Alfa Long-Range Dual-Band AC1200 Wireless ...
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1answer
35 views

I'm trying to make a shell script that can mount a exFAT drive

Hi I am trying to make a shell script that can create a directory (/mnt/drive) and mount a exFAT drive in that directory on my raspberry pi 2. The problem I am having is that when I try to run the ...
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30 views

Use Raspberry Pi 4B as wifi access point and wifi client at same time to function as an extender/repeater [duplicate]

Looked at older threads and found that none of them were working properly and was hoping for an updated tutorial. My main issue is that my Model 3 won't connect to a certain wifi network, and was ...

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