Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

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.

The Raspberry Pi 2 Model B differs from the Model B+ in two major points:

  • A 900 MHz quad-core ARM Cortex-A7 BroadComm 2836 CPU
  • 1 GB of RAM

The Raspberry Pi 3 Model B differs from the 2 B:

  • A 1.2 GHz quad-core ARM 7 BroadComm 2837 CPU
  • A Broadcomm BCM43143 to provide the USB Hub / Ethernet/ 2.4 GHz Wi-Fi / Bluetooth - replacing the LAN9512 or LAN9514 of previous 2 / 4 USB / Ethernet "B" Pi models.

https://www.raspberrypi.org/products/raspberry-pi-2-model-b/

See Also

1640 questions
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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, but the windows and text are too big. Can someone…
David C.
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sudo apt-get update issue & error

May I know how to repair the corrupted files? pi@raspberrypi:~ $ sudo apt-get update Get:1 http://mirrordirector.raspbian.org jessie InRelease [1,733 B] 100% [1 InRelease gpgv 1,733 B] [Waiting for headers]Splitting up…
ShunJian
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How to determine why Raspberry Pi 2 restarted

I've just got a Raspberry Pi and it is working very well, but I realized that at some point it restarted without any apparent cause. I was thinking about a possible power cut off, but it is currently attached to a UPS (that would have started…
Derek Wildstar
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How to install dotnet core 2 on Raspberry Pi

I followed the instructions found on https://www.databinding.net/2017/09/09/net-core-2-0-auf-dem-raspberry-pi/ sorry it's in german but the install part is: curl -sSL -o dotnet.tar.gz…
hgy
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Pi 2 Model B green light flashes 4 quick 4 long

Backstory My Raspberry Pi is a version 2 Model B. For my company, we always use this model with the same SD card images for years now. Recently we bought new Pis from a different company, the same model. We've tried two Pis with two different SDs…
Mikey A. Leonetti
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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.wiringPiSPISetup(1, 1000000); if (fd <= -1) { throw new…
Brian
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Does the Raspberry Pi 2 support 64-bit integers?

I am writing a program in Python and will have a numpy array that might need to be of dtype=np.int64. Will the raspberry pi 2 be able to handle these 64 bit integers? Thank you!
Michael
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Moonlight (Wifi): Dropped Frames, Multiple Errors, Crash

Casting any media from a PC to the RPi, other than on a Ethernet connection, results in a large number of errors, and an eventual crash. Streams are very responsive, and smooth at 720p at 30fps, but drops frames and lags sporadically, until that…
user86169
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How to generate accurate PWM signals

I've ran into a bit of an issue with the Raspberry Pi's ability to generate accurate PWM signals for servos. My problem with this is that the servos jitter because of this lack of accuracy. Is there any software or hardware I can use to fix this…
user79387
3
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2 answers

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 tutorials online do this with an Arduino, but I…
RomanK
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Can PoE ethernet cable damage raspberry pi?

We have a remote site deployed using raspberry pi 2's where 3 out of the 5 have ended up damaged / unresponsive. It is hard to get an exact idea from the client but we suspect that the board may have blown. We know for a fact that they put the pi's…
onemorecupofcoffee
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How to run a mono exe file?

How do I run an exe file on my RPi 2 model B? I tried file Log.exe and got: Log.exe: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32,…
Aaronjamt
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Nothing displaying when connecting Pi 2B to TV

I have a Raspberry Pi 2B and whenever I try to connect to my TV so I can use the Pi, nothing shows up. It is just a black screen... nothing else. I am using HDMI, and one light is green, and one is red. Am I doing anything wrong? Why won't it turn…
Quackalakin
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Using Raspberry Pi to measure power consumption

I am looking to use the Raspberry Pi 2 to measure the power consumed by household appliances. I know that the Pi does not have an inbuilt ADC. I found that the MCP3008 can be interfaced with the Pi as an external ADC. Can I use this to measure…
Rohit Seshadri
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Why would there be voltage on a GPIO Pin configured as Input

I have a Model 3 Pi, with a SIM800 GSM card attached. The GSM card needs to be powered up by applying a High pulse to a pin pin on the card for 1.2 seconds. I attached one of the Pi Pins to this pin, and wrote some python, which configures the GPIO…
Greycon
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