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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unable to ssh into raspberry pi

My raspberry pi 2 is connected to my home Wi-Fi. While I'm able to ssh pi@<ip address> into raspberry pi at home, I'm unable to do so from my office in school. When I connect my raspberry pi 2 ...
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1answer
41 views

Recover Minecraft Pi world after Accidental system shutdown

While playing the Minecraft Pi on my Raspberry Pi 2B, accidentally the system went off, and when I log on again I'm only able to see the "create world" button. I can't find my last saved world. Is ...
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0answers
20 views

How to avoid to create empty wave form in sending serial with pigpio

I am so frustrated with this problem, please help me if anyone knows whats happening here.. I am using pigpio in python 2.7/raspberry pi. the purpose is to control three devices over serial. It works ...
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1answer
461 views

How to use PI4J with a brushless motor?

I have a Raspberry Pi 2 model B. I would like to be able to control a motor with a regulator and PI4J. I put the black cable to a ground pin and the PWM pin to pin 26. I've worked with servos before, ...
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0answers
28 views

IndentationError: expected an indented block [on hold]

Distributed with a free-will license. # Use it any way you want, profit or free, provided it fits in the l icenses of its associated works. # BMP280 # This code is designed to work with the ...
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1answer
1k views

Raspberry pi 3 touch screen 3.5“ not working fine but it does with 7”

I'm working with a pi 3, I use Jessica img and waveshare driver : http://www.waveshare.com/wiki/3.5inch_RPi_LCD_(A). I followed the instructions and the touchscreen 3.5" is working except for touch ...
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1answer
2k views

Raspberry pi 2 is not booting, Both LEDs are on but not blinking

I use raspberry pi 2 with ubuntu mate 16.04. Suddenly my raspberry pi is not booting. The monitor can't find any signal (via HDMI). Both the Power and ACT light is on when I start the PI, but ACT ...
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2answers
869 views

How to format a corrupted SD Card

I was writing something to the SD card at one point and I disconnected. Unfortunately I am unable to boot into Raspbian now as it will simply boot loop and when I tried to use the tools Gparted ...
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1answer
459 views

Wired transfer of live video between 2 raspberry pi's

How can I send a live video from a Raspberry pi to another Raspberry pi, using an optical fibre, not using WiFi or other wireless communications? I need to send a live video recorded by a camera, ...
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1answer
946 views

ethernet internet connection stopped working

I had been using mac wireless to share internet access with my raspberry pi2 via a usb modem's ethernet connection: wifi --> mac (wireless!) mac --> insignia usb modem (direct usb connection to mac) ...
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1answer
24 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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28 views

Raspbi spi CS line won't drive low

Raspberry pi 2 Model B V1.1 Not sure what's happening here, everything should work. Tried different cables, different pins on the analyzer, different laptop... the CE0 line won't go low. Currently ...
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1answer
576 views

How do I get the 74HC165 shift register to work with my Raspberry Pi and Java

I have been using the following link for reference... http://robsraspberrypi.blogspot.co.za/2016/01/raspberry-pi-adding-more-inputs-using.html // setup SPI for communication int fd = Spi....
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1answer
508 views

How to save video from usb webcam in Raspberry Pi by simulink?

I had connected the usb webcam to Raspberry Pi. I loaded the Simulink model that mention below onto Raspberry Pi board from the computer in external mode, It give this message "could not open library:...
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8answers
9k views

Raspberry Pi 2 Model B 1GB not booting - RED and GREEN LEDs ON

I tried almost all the options, but unfortunately I fail to get my Raspberry Pi 2 to boot up. At power, light is still two LEDs (red + green) but nothing further happens. Power supply - tested 2 x AC ...
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2answers
2k views

Install libapache-mod-fastcgi on RPi 2

I'm trying to make working Seafile accessible via HTTPS (locally), following this guide, but I can't install libapache-mod-fastcgi, which is why restarting Apache2 finally fails, as ...
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1answer
1k views

Raspberry pi3 and odoo image

Every time i use odoo posbox image on the raspberry, i can't use the sudo command, did i miss something?
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3answers
46 views

SSH Connection refused, even though the openssh-server daemon is running

I did a fresh installation of Ubuntu Mate on my Raspberry Pi 2. Installed openssh-server (in fact it was already installed), and changed the port to be 10022. However, I cannot access the Pi, from ...
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0answers
22 views

Resistor breakdown - Raspberry pi 2 Model B Version 1.1

on my raspberry pi 2 model b v 1.1 there is a shorted resistor with a name tag R37. I cannot find a circuit diagram for this particular version of raspberry, so I do not know which SM resistor to buy. ...
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1answer
449 views

RPi.GPIO not working at all

I have just started with the GPIO on my raspberry pi but can't get any of the code to work. import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) GPIO.setwarnings(False) GPIO.setup(18,GPIO.OUT) ...
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1answer
65 views

{ [Error: , Remote I/O error] errno: 121, code: '', syscall: 'writeByte' } from raspberry pi to Azure

I tried to follow the instruction below to send sensor data from my raspberry pi 2 to Azure. Connect Raspberry Pi to Azure IoT Hub (Node.js) I connected the sensors to my pi device in a different ...
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1answer
471 views

Can not use GPIO pins when Official Raspberry Pi screen is connected

I have a Raspberry Pi2 B+ model, with noobs distro installed. I had some programs using wiringPi library and an ultrasound component working (tested them using a separate monitor via HDMI). However, ...
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6answers
15k views

Which model Raspberry Pi I am running?

Is there a way of determining whether the current Raspberry Pi is either a 2 Model B and 3 with Raspbian Jessie Lite 8.0? This is because I have a particular bootstrap.sh written in Bash where it ...
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2answers
27 views

Connections to my Raspberry PI SSH hang after a while

I have a Raspberry Pi 2 B connected on the network with a static IP. After a fresh reboot, I can connect to it smoothly and it just works: ssh -A <ip> -p <port>. But after, let's say one ...
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2answers
1k views

function button.is_pressed from gpiozero do not work

Im working on a university project with raspberry and gpiozero. I need to manage the button response to take diferent actions. The problem is that de function button.is_pressed its always true (even ...
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1answer
706 views

openelec to libreelec update not working

My attempt to upgrade OpenElec 7 on my RP2B to LibreElec is not working as expected. I currently have OpenElec 7 on my RP2B. I followed the instructions to upgrade to LibreElec by downloading the ...
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4answers
468 views

Unable to create a bootable Raspbian Lite SD card with the `dd` command

So after much searching, trail and error, I was finally able to create a bootable SD card for my RPi2 Model B. Unfortunately, I did it in a way that I did not want to and I wanted to know where I have ...
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1answer
1k views

Touch screen works in X, not in Kivy

I have the eleduino 7" touchscreen. The image with pre-installed driver they ship it with disable the GPIO pins. Touchscreen works in Kivy though. I was helped here by TMWILSON26 who referred me to ...
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1answer
655 views

ultrasonic sensor stops after giving some reading when running in thread on tornado websocket python

I am using Ultrasonic sensor to get reading and am using python program for getting reading. And am using Raspberry pi for this. when am running python program independently its giving me reading ...
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7answers
12k views

Raspbian wpa_supplicant problem

My old wpa_supplicant and interfaces config not work! /etc/wpa_supplicant/wpa_supplicant.conf ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1 network={ ssid="MySSID" ...
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1answer
517 views

sudo pip install packagename not working

sudo pip install packagename not working... I am not able to install python package using pip.
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2answers
672 views

Bridge and NAT with Raspberry problem

I have a RPI3 with 2 external WLANs (wlan0 and wlan1) which work perfectly as WLAN Repeater (wlan0 gets signal from router) and wlan1 is set as hostAP...done via NAT iptables. no bridge in interfaces....
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1answer
622 views

Huawei E3372 force me to show a webpage on my raspberry pi 2

I have some Raspberry Pi 2 that launch a webpage on Epiphany at startup. I get internet connection with some 4g Modem Huawei E3372. Those modems are setup to launch 192.168.8.1/html/home.html at ...
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1answer
82 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
350 views

Windows 10 IOT Core, Fails to connect using powershell (Objectnotfound measure-object:string)

I followed the steps provided by microsoft to flash windows 10 on a SD card. inserted this into the raspberry pi 2. It boots just fine showing me the defaultApp. I am able to connect trough ssh and ...
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4answers
11k views

Drivers for TP-LINK TL-WN723N v3

I need the drivers for my wireless adapter (TP-LINK TL-WN723N v3). I googled a lot, but could not find latest drivers. All I could find were the drivers for TP-LINK TL-WN725N. My raspbian version is 3....
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6answers
26k views

Can I use Fedora on the Pi 2?

I know Fedora has ARMv7 images. Can those be used on the Raspberry Pi 2, and if so, how?
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2answers
212 views

Is the 3.5mm audio jack tied to a GPIO pin?

I have a Raspberry Pi 2 B+ and I would like to confirm that the 3.5mm jack isn't tied to a GPIO pin. I could not find any information on this and thought this may be the case but I wanted to double ...
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2answers
2k views

Raspberry Pi 2 low bogoMIPs number

I've recently bought a Raspberry Pi 2 to develop some embedded software on. Looking at the specs of the new Pi I thought it would have plenty of power for my application. When I googled a lot of ...
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1answer
439 views

Anyone get direct esp-now to raspberry pi (or other linux wifi device) working?

It would be nice to be able to use raspberry wifi to receive ESP-NOW messages directly and eliminate another ESP-to-PI device to manage. I think this is where @ Alexandr Zarubkin was going but I don'...
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3answers
66 views

How can I clear space on my Raspberry Pi?

I am not able to get enough space on my Pi — I am only getting 1.3GB free even after deleting all the contents which have a total of 8GB. How can I make more space on my Pi?
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2answers
2k views

Setting up RaspAP

I have just downloaded RaspAP onto my Pi 2 Model B. Upon rebooting, I am now able to see the "raspi-webgui" network on my mobile phone. However, when I enter the default password ChangeMe, it does not ...
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1answer
68 views

How to enable the mouse cursor when only usb mouse plugged in?

I have configured kiosk in raspberry pi with touch screen. And When I am using the USB mouse then cursor is not showing. I have followed https://medium.com/stories-from-upstatement/how-to-build-...
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1answer
76 views

Troubleshooting PiVPN connectivity outside of LAN

I've set up pihole w/ cloudflared + pivpn on a raspberry pi 2b+ Everything seems to be working properly when connected to my internal WIFI (cable modem / router combo) on an Android client using the ...
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1answer
281 views

how to use xrandr tool for dual screen

I'm working on Raspberry 2B with Raspbian Strech. I plugged a USB / DVI adaptator which is listed in the lsub command : pi@raspberrypi:~ $ lsusb .../... Bus 001 Device 006: ID 17e9:4301 ...
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1answer
31 views

Raspberry pi ds1307 integration

I would like to integrate ds1307 clock module as a part of my 'garden automation project' to raspberry pi. The concept of the project is the servo will rotate in a specific time. So should I ...
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1answer
36 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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0answers
21 views

Rasberry Pi 2b won't produce hdmi output, both LED's on

I have a rasberry pi 2b running raspian. It was previously working, however whenever I try to turn it on both LEDs come on prmenantly but nothing is outputted on HDMI. My TV does change from saying ...
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2answers
120 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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0answers
33 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 ...