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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48
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2answers
113k views

Raspberry Pi 3 vs Pi 2 power consumption and heat dissipation

I've seen the announcement of the new Raspberry 3 but didn't find any info regarding power consumption and heating. A 1.2 Ghz 64-bit CPU is great but does it draw a lot more power? Shall heat be an ...
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6answers
17k 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 ...
26
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6answers
31k views

Is it possible to add RAM to Raspberry Pi?

Is it possible to add RAM to a Raspberry Pi?
19
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4answers
5k views

How often to reboot raspberry and is it even necessary

If you have a raspberry on some location and it must run a python script "forever" (a year, maybe two, without me being on location), how often should I reboot it? I know people are keeping them alive ...
18
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3answers
2k views

Tell apart RPi 1 from RPi 2 via SSH only

I am connected to 2 Raspberry Pis via SSH. They are running the same OS (Raspbian in this case). How can I tell which one is Pi 1 and which one is Pi 2? I know how to identify the physical hardware ...
18
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4answers
18k views

Current draw for +/2/3/0 models

Essentially "What's the current draw and supply voltage tolerance?" but for newer models.
18
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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?
16
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5answers
23k views

How do you get C# onto your raspberry pi?

I would like to start learning C# and really want to code in it on my raspberry pi. However, I can't find a way to get C# onto my pi. Does anyone know how to do this? I have the Raspberry pi 2 ...
16
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4answers
119k views

Raspbian root default password

I tried to modify the sudoers file on Raspbian /etc/sudoers, and it looks like I made a mistake, as I'm unable to modify it again. I am also unable to call any command that requires sudo permissions. ...
15
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3answers
33k views

What is the difference between Model B+ v1.2 and Model 2B v1.1

I have read a few threads and a wiki page, but I am still getting confused. Until now I have used RPi Model B+ v1.2 and since it has 40 GPIOs, 4x USB and stuff, I supposed it is the RPi 2. Today I ...
15
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4answers
13k views

Visual Studio Code & .Net Core ARM support

I am new to the Raspberry Pi platform and I have been collecting resources and trying to determine what the little computer is (not) suited for. I understand that Python is the go-to programming ...
15
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3answers
26k views

Do I still need to purchase the MPEG-2 and VC-1 license keys for the Raspberry Pi 2?

Do I still need to purchase the MPEG-2 and VC-1 license keys for the Raspberry Pi 2? If so, will the same MPEG-2 and VC-1 licenses available in the Raspberry Pi store work with the Raspberry Pi 2?
14
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5answers
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Is it possible to use any virtualization technique with the Raspberry Pi 3?

The Raspberry Pi computers have not much CPU power and main memory but they could be the perfect platform for virtualization exercises at university classes. Now I'm looking for working ...
14
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3answers
5k views

What are the differences between the Model 2B and 3B?

Having seen an official part/order number (SC14012 or SC14014 with 16GB micro SD Noobs software) including what looks to be a real photographic image in a recent (2016/02/27 "Computer World" March ...
12
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3answers
13k views

Can I power a Pi through a 5V pin?

The PIN mapping of the Raspberry 2B says: The red ones are 5V pins. Are these just used as 5V out pins when power is connected through Micro USB? Or is it also possible to power the Raspberry Pi via ...
12
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1answer
20k views

Install Atom editor on Raspberry Pi

Is ist possible to install Atom on a Raspberry Pi 2 running Ubuntu?
11
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1answer
1k views

What is the purpose of FOUR RaspberryPI icons on boot?

I get four RaspberryPi icons in upper left corner of the monitor screen at boot time. Does it have a purpose? If so , why four?
11
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4answers
10k views

What happened to Raspberry Pi 2- and 3- Model A?

I've been reading the FAQ section of the Raspberry Pi official site and I've noticed there was a list of all the devices ever made, which are (as of June 2016): Raspberry Pi Model A Raspberry Pi ...
11
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5answers
24k views

Raspberry Pi Camera Rev 1.3 is not detected

I'm using an RPi 2 Model B and I have connected a Raspberry Pi Camera Rev 1.3 to it. I have checked to make sure that the connection is correct (the power LED on the camera is on). I've run: rpi-...
10
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3answers
960 views

Powering Pi from Ni-MH batteries

I would like to power my RPi2 from the 5V GPIO pin via 4 Ni-MH rechargeable batteries (4.8V) but I'm afraid about peak current. Can it somehow produce more than 2.5A? Should I use a fuse to limit that ...
10
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1answer
264 views

Installing OS on separate Raspberry Pi

I have a micro SD card that I am planning on using with a Raspberry Pi Zero, I do not have a mini HDMI to full HDMI adapter, but I do have a Raspberry Pi 2 Model B, say could I image the card, do the ...
10
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3answers
4k views

PowerShell can't connect to Windows IoT

I am following the instructions from Using PowerShell to connect and configure a device running Windows 10 IoT Core to access my Raspberry Pi 2 with Windows 10 IoT via PowerShell. PS C:\> Enter-...
9
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3answers
9k views

Running Debian (Debian, not Raspbian) on a Raspberry Pi 3

The original Raspberry Pis had an ARM11 core which used the ARMv6 architecture, and most distribution's ARM hardfloat ports require at least ARMv7-A, the reason for Raspberry Pi-specific distributions ...
8
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2answers
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GPIO library for C

I want to utilize the GPIO pins on my Raspberry Pi 2, but I'd rather not use Python since I personally dislike the language. However, I cannot seem to find any information regarding the use of C, only ...
8
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2answers
4k views

Error while trying to compile RStudio

I'm using Raspbian in a Raspberry Pi 2 Model B I've followed the guidelines in the RStudio Webpage and also in this topic https://www.raspberrypi.org/forums/viewtopic.php?f=34&t=55828 sudo su ...
8
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1answer
50k views

Best way to setup USB mic as system default on Raspbian Jessie [duplicate]

I am trying to setup Jasper on my RPi 2 B by following these instructions http://jasperproject.github.io/documentation/installation/#configure-raspbian and just figured out that there's no /etc/...
8
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3answers
8k views

Does Windows 10 IoT support Java on the Raspberry Pi 2?

A preliminary web search seems to indicate that the answer is currently no. Does anyone know about plans to support java on Win 10 IoT?
8
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2answers
361 views

Touchscreen display turns off whenever audio plays (RPI2, DAC+, PITFT)

I'm using a Raspberry Pi 2 with a Hifiberry DAC+ Pro and the Adafruit 3.5" touchscreen. I attached the DAC+ to the Pi, and then the touchscreen to the DAC after soldering some extra connectors. It ...
7
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2answers
1k views

The purpose of the orange tape on the HDMI connector

On my Pi B+, and B model 2 there is a piece of orange see-through tape stuck across the top of the HDMI connector. What is the purpose of this piece of tape? And are there any damaging effects if I ...
7
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2answers
987 views

Issue with push button on raspberry PI

I'm currently working with Raspberry Pi. I have implemented push button(switch) program using python. But, When I press the switch, then if condition is true and data stored but when I release the ...
7
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5answers
20k views

Set multiple static ip in dhcpcd.conf - Raspbian 8 (jessie)

Trying to set two static ip in dhcpcd.conf, but second ip is not active. dhcpcd.conf interface eth0 static ip_address=192.168.3.99/24 static routers=192.168.3.61 static ...
7
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2answers
8k views

Touchscreen w/ HDMI output only when a display is attached?

Probably a very simple question, but I haven't had much luck finding a answer on my own. I have a Tontec 3.5" touchscreen plugged into my RPi2. Is there any way that I can use the touchscreen when ...
7
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1answer
28k views

“Failed to open video device /dev/video0 no such file or directory” with normal working usb camera in motion

I have a normal usb 2.0 cam. Connecting it to my pc, it works perfectly. It is not working with my raspberry pi (2). I had installed motion and it had worked good before 2/3 weeks when I tried it but ...
7
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2answers
5k views

configure monitor to allow rotation

I have a monitor Samsung SyncMaster 943B (connected through DVI) which has a rotatable screen. Monitor Preferences shows "Monitor Unknown" and the correct Resolution but not the Refreshrate and won't ...
7
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2answers
931 views

Is there an Raspberry Pi OS designed for a small screen

I have a B raspberry pi and I want an OS that works well with small screens. The raspian OS isn't working well with my 5" screen. The graphics is the correct resolution, I don't need help with that, ...
7
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1answer
2k views

Wake Raspberry using PS3 controller

I have a PS3 controller connected via Bluettoth to my RetroPie and when I leave it for a few minutes it idles. Now I want to wake it up with my controller. My first idea was to try bluetooth event ...
7
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1answer
898 views

Thermal printer with Raspberry Pi 2 outputs only Chinese chars

Following thermal printer + raspi2 tutorial for printing images (https://learn.adafruit.com/networked-thermal-printer-using-cups-and-raspberry-pi/connect-and-configure-printer), I've already connected ...
6
votes
6answers
18k views

Does Raspberry Pi cluster make sense for a small rendering farm

I have seen bunch of articles saying how raspberries could be joined to make a cluster. I basically am a 3d artist type thing and you know rendering a 10 second animation can take hours. So if I make ...
6
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2answers
5k views

What is the purpose of SCLK pin of SPI protocol?

I read about SPI(Serial Peripheral Interface) protocol and try to understand their pin functionalities. Where i read about SCLK pin, which is provide serial clock to synchronize the master and slave ...
6
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3answers
2k views

Disable ALL video outputs and USB Ports. Only remote access

I don't know if this is possible. I'm hosting a web farm on raspberry pi (for fun). And one of them is at friend's house. I can access the pi remotely using VNC. How can i prevent my friend from ...
6
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1answer
1k views

Extra 16M memory on Pi2/Pi3

My 1 GiB RAM Pi shows this: >vcgencmd get_mem gpu gpu=128M >vcgencmd get_mem arm arm=880M The former is specified in /boot/config.txt, but the total here is only 1008 MiB. What happened to ...
6
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1answer
496 views

I have just returned to my Raspberry Pi after a year and can't remember my login

After sitting in the depths of my project desk for a year or so, a Raspberry Pi model B turned up that has data I want to save. It boots up but I deleted the pi user for security reasons and can't ...
6
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1answer
16k views

How to change raspberry pi 2 overclock to default on Raspbian

I've been wondering how I could reset my raspberry pi 2 to its stock clock after I used the raspi-config utils. The only options I had were primarily for the first Raspberry. There's no "default" ...
6
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2answers
16k views

Configuring uv4L for webRTC using USB camera on RPI2 raspbian

To make a UV4L WebRTC client for KMS, i am trying to run a USB camera on RPI2 with the UV4L driver, I Tried with the Microsoft lifeCam, which is UVC compliant. Tutorials only show this working with ...
6
votes
3answers
22k views

Undervoltage rainbow despite good power supply

I have my Raspberry Pi 2 since a week and noticed that little rainbow on the top right corner of the screen. Seems like this is a alert for under voltage. I tried different power supplies and my best ...
6
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3answers
9k views

RPi 2 and 3.95 TFT ili9488

I have bought a 3.95 inch TFTLCD for Raspberry Pi (ILI9488 from mcufriend) and I can't get it to work. I am just mildly experienced with Raspberry and Linux, but the way this type of screen was shown ...
6
votes
1answer
547 views

OS from scratch on the Pi 2?

I found this cool tutorial for building an OS from scratch for the Raspberry Pi. Unfortunately, to my dismay, it seems like it hasn't been updated for the 2. Is there any chance it would still work? ...
6
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3answers
1k views

Is the new raspberry pi 2 software compatible with the old raspberry pis?

I can't find much about this new PI yet http://www.theregister.co.uk/2015/02/02/raspberry_pi_model_2/ http://raspberry.piaustralia.com.au/products/raspberry-pi-2-model-b They talk about the ports ...
6
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3answers
3k views

Does the RPi support hardware virtualization?

Does the Raspberry Pi 2 support hardware virtualization? Looking at the ARM specification page, the Cortex A7 chip has the ability to do so, but I'm unsure if there may be other problematic concerns ...
6
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1answer
9k views

Raspberry PI2 what is the maximum sdcard speed?

The first Raspberry PI could not utilize more speed than approximately a class 6 card. Can the new Raspberry PI2 utilize faster cards like class 10? Or is the IO speed the same towards the sd cards ...