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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Has anyone successfully used I2C repeated starts on the PI2? My scope says they are broken

I've looked at all the info that I could find on I2C repeated starts, and I tested a simple example that uses ioctl calls with the standard two message structure required to cause a repeated start: ...
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3answers
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Is the Docker framework planned for Snappy Ubuntu Core on the Pi 2?

I can boot and run Snappy Ubuntu Core on the Pi 2, but there are very few apps and frameworks currently available for the ARM version of Snappy. This wouldn't be a major problem if the Docker ...
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1answer
270 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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1answer
164 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 ...
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2answers
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How to install updates without internet on Raspberry? [duplicate]

I want to calibrate my LCD screen, but i have no internet connection to my Raspberry Pi 2B. The terminal commands I would use with internet on the Raspberry Pi is cp LCD-show/xinput-calibrator_0.7.5-...
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1answer
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Set custom mouse button actions

How would I set custom mouse button actions on my Raspberry Pi? Here's the idea: I have a Pi with speakers with a mouse dongle connected. I want to dismantle a wireless mouse and use the already ...
3
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1answer
8k views

Android Tablet as Pi monitor without WiFi

Is it possible to display Raspberry Pi through android tablet without WiFi? I wanted to do that so I can avoid the constrains over the the Pi and the Tablet Wifi. In addition to that I wanted easy ...
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2answers
2k views

How to connect Raspberry Pi to 3 stepper motors

I'm trying to create a simple cnc machine/3d printer/plotter that uses 3 stepper motors for the x, y and z axes. Does anyone know how to connect the three to a single Raspberry Pi (Model B+). A lot of ...
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1answer
776 views

Raspberry Pi Webcam Motion Snapshot

i'm doing a motion (streaming webcam content) project and i want to know how can i take a snapshot with a terminal command. wget http://localhost:8080/?action=snapshot -O output.jpg This does not ...
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successfully paired bluetooth apple keyboard with Pi but can't type

I successfully followed all the instructions here http://www.adeepbite.com/apple-bluetooth-wireless-keyboard-trackpad-raspberry-pi/ to link a Bluetooth keyboard to a Pi with no errors and I still can'...
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1answer
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Raspberry Pi 2 Model B NRF24L01 Pin Connections

I'm trying to connect Arduino Nano and Raspberry Pi 2 Model B. But there is a problem that I really couldn't handle for more than 10 hours. When i try to ping out from Raspberry Pi, it says "Check ...
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Problem about installing mysql in my raspberry Pi 2

Today when I tried to install mysql in my raspberry pi 2, problems happen as shown below: I use the command apt-get install mysql-server python-mysqldb to install mysql. Does any one know how to ...
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1answer
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Raspberry Pi 2 model B green led is blinking 8 times

When I am booting up my Raspberry Pi 2 model b, green led is blinking for 8 times. I read all the post related to it and done necessary things without success. I changed SD card, tried Noobs, Wheezy,...
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2answers
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Fire OS on RPI?

Has anyone tried to create any sort of file that allows Fire OS(Amazon's Fire operating system) to run on the rpi? I can't seem to find any sites on google that provide the necessary files.
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1answer
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Where is my SQLite database location on RPi2 SD card (Windows IOT OS)?

My SQLite project is working on Raspberry Pi 2 (with all function insert, delete, update ..) but where are my SQLite database files located? I followed this way I found my SQLite database location on ...
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1answer
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Migrating SD from Raspberry 1 B+ to Raspberry 2 microSD

I have and old Raspberry 1 B+ with a normal SD card (60 GB), then I purchased a new Raspberry 2 with a 60 GB microSD card. I have followed this tutorial to completely migrate the Raspbian OS and its ...
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1answer
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Rpi2 raspi-config Kali : Overscan

I run Kali 2.0.1 on my Rpi 2. I have black areas around my main window (the PI is connected to a 1920x1080 screen), so I thought it could come from the Overscan parameter. As you probably know, this ...
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2answers
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Dnsmasq DHCP not giving IP address

I have bought a RPI 2 for my 3D printer. My purpose is to access it remotely via wifi. I don't have a router, so I have created an Access Point on the RPI. I have also installed dnsmasq as the DHCP ...
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1answer
188 views

Using I2c port as standart GPIO

When I try to use I2c1 SDA pin (GPIO 2 BCM number) via GpioController::OpenPin() func, it compiles OK but it throws an exception HRESULT:0x80070490 Element not found. How should I use I2c pins as any ...
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2answers
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RPi2 raspbian I2C error - BMP180 sensor

I am having a lot of trouble getting the RPi2 to recognize the sensor, even after configuring the I2C for the RPi and following the guide several times. Running: sudo i2cdetect -y 1 outputs that ...
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1answer
5k views

Run Windows XP in qemu on Raspberry Pi 2

It's possible to run Windows XP in qemu on Raspberry Pi 2? Loading Windows XP would be very slow?
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2answers
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Powering several LEDs from GPIO output

I'm currently working on a "rotating cube" project where a raspberry pi will be used to determine which cube face is at the top and any given time using an accelerometer and light it up with LEDs. So,...
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2answers
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raspi-config network option not working

I am trying to turn on the network option in raspi-config, but when I do, I get this error: could not communicate with wpa_supplicant Then I hit enter to continue and I get this message There was ...
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1answer
548 views

My PIR sensor seems alittle keen to sense things

Before you tell me answers for my issue already exist I'd like to mention that I have checked previous answers and where similar issues have occurred I have tried to use their approved answer. So far ...
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535 views

Disable Screensaver of XServer on Raspbian Jessie Lite

I setup a Raspberry Pi 2 with Raspbian Jessie Lite in read only mode. To run a Qt application I installed the packages "xserver-xorg" and "xinit". I am starting the application automatically after ...
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1answer
252 views

Can't find out why my program won't read analog values (Using MCP3004)

I am using wiringPi and C. I have a flame sensor and a MCP3004 ADC. Here is the program that I wrote, but I can't figure out why it won't read the analog values from the flame sensor. #include <...
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2answers
4k views

Not able to connect to WiFi

I spent nights trying to configure WiFi. I have edimax 7811un, RP2 with Jessie. What is this "unassociated" issue? Please don't post solutions older than 2016 because the newer versions of ...
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3answers
10k views

Raspbian does not get DHCP address

I've got a Raspberry Pi 2 running Raspbian (can't remember the exact date but it's something from early February 2017) and when connected to my router (TP-Link TD-W8970) it fails to get a DHCP ...
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1answer
344 views

How to use MATLAB at host PC with Raspberry Pi

I'm trying to connect MATLAB with raspberry pi 2 b+. have already instlled the raspberry pi addon on MATLAB at the host LAPTOP. The configuration - Matlab(Host LAPTOP)-<---->ETHERNET<---->...
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Pi 2 Windows IoT support for onboard CSI camera port

I am working on IoT technology, in one of my project I want to connect to on-board camera with Raspberry Pi 2 having Windows 10 IoT core. Two months back I found Windows IoT on the Raspberry Pi 2 ...
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Arecord not working with USB Microphone anymore

Before I start, I'd like to tell you that I've used arecord in the past with the Raspberry Pi 2 using the same USB Microphone and it has worked just fine. For some reason, it doesn't seem to work ...
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1answer
488 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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224 views

How Can I Properly Ground My RPI To Avoid Static Interference?

I have researched every where for this problem and cannot find a direct answer. I am currently working on a project which involves a large 20ft conveyor belt transferring product into a Plexiglas box ...
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0answers
856 views

Using I2S microphone with Raspberry Pi [closed]

I have a microphone with I2S output and I am trying to record audio with it, using the Raspberry Pi (2 model B). I'm having trouble getting the microphone to work. Does anyone have working code for it?...
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Pi 2, keyboard/mouse not recognized through USB hub

I am trying to get the keyboard and mouse control from a Startech crash cart adapter working smoothly on a Pi 2. The adapter has an internal USB hub (Alcor, 058F:6254) and behind that a virtual ...
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0answers
543 views

Modbus on Raspberry Pi

I am quite new to Raspberry Pi and Modbus. I am going to implement a Modbus RTU on Raspberry Pi using libmodbus. I followed this totorial as a simple Modbus test, but when I compile the bandwidth-...
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8answers
4k views

Can RPi2 be used as an IP cam viewer?

I want to monitor my IP cam on my TV (both set to 1920 x 1080p). Since the IP cam uses ethernet and the TV has HDMI, I'm hoping my RPi2 will be a suitable interface. At this point, I'm unsure of my ...
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0answers
271 views

External HDD stopped mounting automatically in Raspbian

In Raspbian I used to be able to just plug in my external HDDs and they would be detected I could then find them in /media/ using WinSCP and transfer files to them. I haven't used Raspbian in a ...
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0answers
531 views

Raspberry Pi 2 and JavaFX8: Can't render small images without more GPU RAM

I'm trying to write a simple FX8 image display program on the Raspberry Pi2 without increasing the GPU memory beyond the default 64MB. I seem to get me a NullPointer Exception at com.sun.prism.impl....
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0answers
131 views

crackling sound RPI2 analog output [duplicate]

I am using a RPI B 2 with OSMC as a media player for video and sound content. I have an amp connected via the analog 3.5mm jack output of the pi. When the audio volume of the pi is relatively low, ...
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0answers
786 views

How to boot Ubuntu 14.04 for Raspberry Pi 2 under qemu?

There's an Ubuntu image for the Raspberry Pi 2 here: https://wiki.ubuntu.com/ARM/RaspberryPi I'd like to boot this image under qemu. I'd like to do it so that I can have some virtual build systems as ...
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4answers
22k views

ImportError: No module named GPIO

I have install RPi.GPIO 5.3a from here: https://pypi.python.org/pypi/RPi.GPIO I ran the next code: sudo python setup.py install there are no fails on the installing. I will run the next script: ...
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3answers
6k views

Installing chromium on Raspbian

I was trying to install chromium on the RPi but it does not seems to be working. I am using a Raspberry Pi 2 Model B. This is what i typed: sudo apt-get install chromium ...and I got this error: ...
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3answers
13k views

Raspbian migration from Raspberry Pi 2 to Raspberry Pi 3

I have spent the past couple of months developing software on my RPi2 and I would like to now run this on my RPi3 to take advantage of the higher performance. The software I have written relies on ...
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5answers
455 views

Raspberry Pi 2 Functionality

Can you actually write a program to a Raspberry Pi 2 like we normally do with microcontrollers? I'm only seeing videos of Raspberry Pi's connected with a computer, and it seems like the actual program ...
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2answers
2k views

Can I connect two Pi's through GPIO?

Say if I had one GPIO pin. Could I connect it to another pin on a different Pi and have it pick up the first pin's signal as input? Would I need to connect both Pi's ground pins to each other?
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2answers
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How to operate a cooling fan using GPIO pins, RaspPi2

I have little to no experience with any form of computer software coding/editing but I have managed to get EmulationStation working (sort of) on my Raspberry Pi 2. I have a bought a fan and plugged it ...
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3answers
7k views

SSH to Pi through putty Connection Refused (Raspbian Wheezy)

I just got a RPi2 Model B a few weeks ago and just started to program with it. I am trying to connect to the Internet for the project I am doing. So the OS is installed on my SD the only problem I am ...
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3answers
92 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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4answers
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Connect to Raspberry Pi Over the Air Without Internet

For a school project, my group and I have decided to make a weather buoy to put in the ocean. We have several parts available to make the buoy, including 2 Raspberry Pis (One version 2 model B, and ...

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