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.
1,525
questions
2
votes
0answers
21 views
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 ...
0
votes
0answers
20 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 ...
2
votes
2answers
26 views
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?
-1
votes
0answers
53 views
How to run python fast on raspberry Pi
I have a python application running on Raspberry Pi.
Python version: 3.7.3.
The application does heavy run-time calculations and therefore runs very slow on the raspberry pi. The application uses ...
1
vote
0answers
24 views
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 ...
1
vote
0answers
29 views
Strange noise spikes in recorded sound
I have two RPI: pi2 and pi3b+, both have an identical usb soundcard attached, identical microphones, they both have the same DIY shield around microphone cable and soundcard and it is grounden in the ...
-1
votes
1answer
34 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....
2
votes
1answer
37 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 ...
0
votes
0answers
26 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 ...
1
vote
0answers
8 views
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 ...
0
votes
0answers
34 views
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 ...
2
votes
0answers
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....
0
votes
0answers
21 views
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 ...
-1
votes
1answer
50 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 ...
0
votes
0answers
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 ...
3
votes
2answers
47 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 ...
2
votes
0answers
38 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/...
0
votes
0answers
67 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 ...
1
vote
2answers
81 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 ...
3
votes
2answers
107 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 ...
0
votes
1answer
18 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.
1
vote
2answers
55 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 ...
0
votes
1answer
115 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/...
2
votes
2answers
107 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?
1
vote
1answer
59 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 ...
0
votes
0answers
70 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://...
0
votes
0answers
30 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:...
1
vote
1answer
46 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 ...
0
votes
0answers
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?
1
vote
1answer
102 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 ...
0
votes
1answer
37 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, ...
0
votes
1answer
43 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.
...
-1
votes
1answer
145 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 ...
1
vote
2answers
83 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 ...
3
votes
1answer
90 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 ...
0
votes
0answers
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 ...
0
votes
0answers
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 ...
-2
votes
1answer
32 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 ...
0
votes
0answers
25 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 ...
2
votes
1answer
90 views
OnionPi - No internet connection after adding Iptables rules
I need some help or advices since I've not know what could I do to fix this issue.
I've built an onion pi following the adafruit tutorial.
This basicly is a wifi hotspot that routes all traffic ...
1
vote
1answer
195 views
Wireless USB Adapter not working on Raspberry Pi 2
I am trying to install a Wireless USB Adapter but Raspbian can't detect it.
tp-link TL-WN725N | Raspbian 10.1 | Raspberry Pi 2 Model B
I think the drivers were installed correctly, but I just ...
1
vote
1answer
91 views
Pi 2B won't update TeamViewer
I've recently tried to log into my Raspberry Pi (2B with 1GB running Jessie) using TeamViewer and found that my TV software is out of date. I needed to update TV to version 14. When I downloaded ...
1
vote
0answers
217 views
cannot update after adding new source
I am running a raspberry Pi 2B (with GUI disabled) and I added deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi to my sources.list.
After this, I ran sudo apt-get update ...
1
vote
1answer
62 views
Remotely Connect to Pi through VNC Outside of LAN Network
I want to be able to remotely access the desktop of my Raspberry Pi 2, running Rasbian Full, from outside of my LAN network. I've been able to easily connect on my network, but I want to be able to ...
0
votes
2answers
915 views
Pi-Hole: How to change DNS via command
I use Pi-Hole on my Raspberry Pi 2. It's very easy to change the Pi-Hole DNS using the Web Interface Settings.
But how can I change my Pi-Hole DNS via command in my raspberry pi console? (Raspbian)
...
1
vote
1answer
92 views
Sites unavailable ('Network unreachable') but pings work fine [closed]
I have a Raspberry Pi 2 Model B running Raspbian Buster (upgraded from Stretch). I don't use it very often, but recently I noticed that I can't do apt update because all the repos are unreachable (...
0
votes
0answers
67 views
Can't Install Raspbian Because SD Card Shrunk
I have an 8 GB Kingston SD card that I'm using. I formatted the card with the formatter from sdcard.org and it kept its file size after format. I downloaded the NOOBS 3.2.1 file from RaspberryPi's ...
0
votes
2answers
37 views
How to run a raspberry pi program without connected to a desktop screen
I want to be able to run a raspberry pi program without being connected to a desktop screen so the whole idea is to make an object tracking robot using raspberry pi and a camera.
This should be able ...
0
votes
0answers
90 views
Running a mongodb server on Raspberry pi 4 [duplicate]
I am trying to run a MongoDB server with a node.js server and express on a Raspberry Pi 4. I have installed the MongoDB server using sudo apt-get install mongodb. When I try to start the node server I ...
0
votes
1answer
73 views
Possible to stream live-video with (almost) zero-lag using RPi 2B accessible via browser?
I'm an apprentice for becoming an IT specialist. My colleagues and me are trying to set up a Raspberry Pi in order to stream live video in 720p with (near to) zero-lag which has to be accessible via ...
