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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33 views

Recover MineCraft pi world after Accidental system shutdown

While playing the MineCraft pi in my RPI 2B, Accidentally the system went off, and when i logon again Im only able to see the "create world" button. I cant find my last saved world. Is there any way ...
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107 views

What are the differences in architecture of Model 2 and Model 3B+? (SD card not working in model 3B+)

I have two raspberries (model 2 and model 3B+) and two sd cards. I wanted to swap the cards. The card from model 2 is not recognised in model 3B+. There is no green LED which indicates that the ...
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1answer
16 views

Pigpio on callback get value

I currently have some code that I found that constantly outputs a value from a digital caliper. However, I want to modify this so that it is inside a function that can return that is returned from ...
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0answers
18 views

Video lags in VLC (Raspbian Buster) in Raspberry Pi 2

I installed a fresh image of Raspbian Buster in my Raspberry Pi 2. When I run the Big Buck Bunny video in VLC (both in full screen and window mode), the video lags.As far as I can remember, this did ...
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3answers
56 views

How can i clear my raspberry device

Am not able to get enough space that is am only getting just 1.3GB free even after deleting all the contents which a having a total to 8GB
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1answer
47 views

Speed up SPI transfer

So I need to transfer a byte on the spi interface on raspberry pi. Here's my code in python import spidev import time import binimp fhandle=open("white.txt") initial=binimp.extract(fhandle,'192','...
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1answer
61 views

At what instances do we use the Board mode and BCN mode in Raspberry Pi?

I know about the two modes of working in Pi using python, Board and BCN. However, I am really confused as to the instances or situations where I should use them. An example demonstrating their use ...
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53 views

Serial read from arduino not working properly

I am trying to read analog read from ardunio connected to my raspberry pi. Following are my raspberry pi and arduino codes. Raspbery pi: import time import serial ser = serial.Serial('/dev/ttyACM0'...
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22 views

Connecting a Compaq CQ56 screen to a raspberry Pi

I've got this laptop in pieces, a Compaq CQ56. I want to take the screen and connect it to a raspberry Pi to make a interactive mirror like so many tutorials show. On the back of the screen it has ...
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24 views

Pi B 2 Segmentation fault result from airmon-ng - Why?

This is my first post here and I'm a major noob to this RPi stuff. I'm experimenting with aircrack-ng on my own network to test it's weaknesses and want to use my Pi to do it. I installed a fresh and ...
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35 views

Raspberry pi 2 model b+ odd booting issue

I ran into an odd issue with my raspberry pi and was hoping someone could help me point in a right direction here. I have a model b raspberry pi successfully running latest raspbian (downloaded from ...
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1answer
52 views

Can't connect via SSH to RPi2

I have searched for old topics but I can't find anything that could solve my issue. I have installed Ubuntu MATE on SD card and created the ssh file on the boot\ directory. I connect the RPi2 ...
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1answer
78 views

Can't connect PI through wifi but ethernet routing is working

I want to access my RPI using SSH, so connected my PI to wifi router via ethernet and i'm trying to access this via Laptop connected through wifi on the same router. When I search for IP using ...
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1answer
20 views

Raspbian 4.13 on Pi2 - Mouse issues

Had model 2. just loaded the latest Raspbian 4.13. attached a wireless HP mouse. it is gliding on the screen, slow and behaving like it is drugged. this mouse works fine on other machines. This is ...
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1answer
3k views

Raspberry Pi 3 Model B v1.2 - Connect to old TV via Composite Video Output

I have a Raspberry Pi 3 Model B v1.2. It works great on my TV that has HDMI port, but I am trying to hook it up to a TV that only has A/V and Composite Video inputs. From what I understand, I needed ...
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42 views

macos x installion rapsberry pi

Hi I just installed my Pi according to this tutorial https://www.youtube.com/watch?v=4Fe1C1D5DhU but I got just one MacBook so as I put the SD card back, it shows this error The disk you inserted ...
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44 views

Raspberry pi + L298 H bridge motor speed reduced when battery circuit shows 50%

I made a raspberry pi car. The pi is powered by two 18650 (Breewell New Multipurpose Flat Top 18650 Battery 2000 mAh 3.7 Volt Lithium Genuine Rechargeable Battery -Pack of 2 https://www.amazon.in/dp/...
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0answers
33 views

Take data from raspberry [closed]

I want to sample in the raspberry pi, since I am reading the analog values, the detail is that I need a time function which allows me to have the time in a vector of what I am sampling. there are a ...
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1answer
41 views

Troubleshooting Ethernet: Network is unreachable

I have a Raspberry Pi 2 Model B V1.1 running Raspbian (I'm not a confident Linux user, but I understand this is the "Jessie" distribution) and have been using it to install matplotlib and other MATLAB-...
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1answer
32 views

Permanent & Safe Powering of Raspberry Pi in Confined Space

I have a small project that involves the automation of the lights in a room using a Raspberry Pi and a set of four relays. All of the software and hardware is operational, and it is ready to be ...
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1answer
159 views

Error when installing Periscope

I've created a media system with my Pi 2, but when I install Periscope using sudo pip install periscope, I obtain this error:: Requirement already satisfied (use --upgrade to upgrade): periscope in /...
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1answer
31 views

GPIO.input(24) is coming back True when it shouldn't be (false button presses)

I have a button in a working circuit. Within sys/class/gpio/gpio24, value changes properly (it becomes 1 when pressed down, 0 otherwise). When I use GPIO.setup(24, GPIO.IN) within python, GPIO.input(...
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110 views

illegal instruction when importing opencv in python 3.5

illegal instruction when importing opencv into python compiled opencv3 for python 3 by using these commands $ cd ~/opencv-3.3.0/ $ mkdir build $ cd build $ cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D ...
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1answer
63 views

Raspberry pi 2 model b system clock ppm

I have a Raspberry Pi 2 model B and a RTC (precision 1 ppm) hooked up with, without Internet conneciton. When the RPi is power off is the RTC the responsible to keep the current hour but when the RPi ...
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1answer
66 views

Can I use a Sanyo tv as raspberry pi display?

So I have a decently old Sanyo tv laying around, and I want to put it to some use. I intend on using it as a display for my raspberry pi. All in all I was just wondering whether such a task is ...
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1answer
53 views

Raspberry Pi boot and work perfectly as server with Rainbow screen

I searched for an hour and every problem about the rainbow screen is related to a boot problem. Not for me, I have no boot problem! In my case, my raspberry pi 2 is working perfectly as a server, ...
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1answer
65 views

Raspberry Pi + NRF24L01 timeout after a period of time

I am using a Raspberry Pi 2 with a NRF24L01 module... to communicate with several Arduinos. It is working very well ... until some point... after days or weeks. Then I get only timeouts. Not even a ...
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1answer
59 views

why does my raspberrypi 3B not able to reboot each time power is shut down?

I installed raspberian in my raspberrypi. It worked for the first time. But when I shut it down, it didn't reboot again. So, I had to format the sdcard and reinstall the raspberian again. And ...
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0answers
14 views

LED Strip on Raspberry Pi Check if its On - Neopixel

How can I check if the one pixel is on or not? Is there any function for that. I've googled but couldn't find anything helpful. import board import neopixel pixels = neopixel.NeoPixel(board.D18, 17) ...
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1answer
55 views

Pi 2 won't boot to HDMI

I had just setup VNC Viewer successfully for once. I shutdown my pi 2 then reconnected the pi camera cable that had fallen out. Now the HDMI is not working. I tried the same cable on 3 screens then a ...
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1answer
70 views

High frequency hiss when running on Pi2

I have a Raspberry Pi 2 running Open Source Media Center (aka OSMC), and when it runs, I hear a very high frequency hissing noise coming from the Pi. In my family, I am the only one able to hear this ...
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65 views

RPi as a Dolby Amp?

I have bought a new Smart TV but the sound is a bit disappointing. So I was wonder if using an RPi with some sort of on board amplifier would work; either normal sound to a speaker and Dolby. Is this ...
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1answer
26 views

Detect multiple button presses on circuit

I am totally new to using the Raspberry Pi. Right now I am trying to determine if a Pi could be used to solve my problem or not. I am trying to detect multiple buttons pressed. With this I also want ...
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2answers
59 views

how to identify if ultrasonic pin is removed from circuit using python code

this is the simple code to measure distance using ultrasoinic sensor attached to reapberry-pi and by writing python script-- import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) TRIG = 16 ...
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1answer
65 views

What is the meaning of this errors?

I downloaded the driver for LCD touch display (KeDei 3.5 inch SPI TFTLCD version 3.0 20015/12/1) from http://kedei.net/raspberry/v6_1/LCD_show_v6_1_3.tar.gz. Afterward I unpacked it tar -xzvf ...
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1answer
91 views

Raspberry PI + OpenNI2 + OpenCV

I have opencv installed on RPi. Now I need to install OpenNi2 and I have this error: "error: array subscript is below array bound" I use: PLATFORM=Arm make gcc -v 6.3.0 How to solve the problem ...
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3answers
256 views

Raspberry Pi; blank desktop

I have two raspberry pi 2 boards. I have wrote raspbian wheezy image on 8GB card using win32DiskImager. But whenever I run my board, nothing appear on the desktop connected (hdmi to VGA converter used)...
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1answer
88 views

RaspberryPi 2 GPIO stopped working

I have RaspberryPI with Arch Linux and everything was going well, until this morning when I tried to do my usual work on it, it sounds like nothing happening at all, I have checked with pintest (I use ...
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3answers
329 views

Difficulties Miracast iPhone -> Raspberry Pi -> HDMI -> TV

What I want to do? Cast using the miracast icon from my iPhone to RPI which is connected with HDMI to TV. OR Mirror Screen to do the same thing. Problems I have encountered: RaspberryCast 3.0 (...
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3answers
58 views

wrong date after power supply interuption ( Sun 28thDec 2014)

The System rebooted after the power supply went off and now it has the wrong date and I cannot use the add ons . can someone walk me the through the solution as I am a dummy
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1answer
90 views

Can I interface with a BeagleBone Cape from a Raspberry Pi

More specifically, the SparkFun CryptoCape < https://www.sparkfun.com/products/12773 > I'm assuming you can just pop the Cape into a breadboard and work away?
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1answer
58 views

T2252MTS Monitor - Stops working after reboot

I have a Raspberry PI setup and want to use a T2252MTS monitor with it. When initially connecting and using the Raspberry PI Model 2B, the monitor works, I have picture. Althogh, after restarting the ...
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4answers
26k views

How to permanently hide mouse pointer or cursor on Raspberry PI?

I am running Raspbian Jessie on Raspberry PI 2 Model B along with a touchscreen. I just noticed that whenever I use the touchscreen display, mouse pointer also follows my finger tips. I don't want ...
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1answer
210 views

Can I modify an RPi2 image to boot on an RPi3 B+?

I have a Raspberry Pi 3 B+, and none of the operating systems that usually work on the RPi 3 will boot. I've done a small bit of research, and I think this has something to do with an outdated ...
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1answer
88 views

PCI WiFi card on a raspberry pi

I want to know if it is possible and if it is how to connect a pci wifi card to my raspberry pi. Reason for this is simply the fact that i want to connect to a wifi signal and then use the pi as a ...
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1answer
2k views

Split screen cloned display

Is it possible to split a Raspberry Pi display so that it shows up twice on one screen? I'm building a costume that covers my face. To be able to see, I've got a Raspberry Pi with Pi Camera and a 7" ...
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165 views

How can I create a bootable disk/image for raspberry pi?

I want to to create a (kind of) preset image for raspberry that will include some application set up that I'm working on a project of mine. So, let's start with a simple problem so that from this ...
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1answer
31 views

How to stream music from pi to computer through browser interface?

I have a Raspi with connected USB drive that contains my mp3 collection. It is currently set up as a NAS using Samba. Is there a package that allows me to stream the music from the RasPi to my ...
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1answer
94 views

Is it okay to power the Pi Touchscreen by plugging into the Pi?

I have the official raspberry Pi 7 inch touch screen, and I have mounted to it a Pi 2. Lately I have been using it and I have been plugging the power into the Pi itself. I however recently remember ...
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1answer
89 views

RASPBMC Web Server Control Via Kodi iOS App

I am using the Kodi app to control the media centre perfectly fine. However when the Raspberry Pi reboots it will no longer connect. A fix for this is to toggle the setting in RASPBMC to allow ...