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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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? ...
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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 ...
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3answers
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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
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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 ...
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2answers
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OSMC: how to execute a script with systemd at shutdown

I am really hoping to find some advice here. I am trying to setup a service in systemd that executes a .sh script at shutdown (and only at shutdown, halt and/or poweroff; NOT at reboot) of the the Pi. ...
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2answers
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Why does the Sense Hat / Astro Pi show the wrong temperature and humidity?

I recently bought the sense-hat, previously called astro-pi. Unfortunately the temperature shows 28 to 31 degrees Celsius from both temperature sensors on the board. They often show around 30 degrees ...
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3answers
2k views

Custom Pi's for Commercial Applications

I am looking to start a small company that sells Pi's predefined to fit my customer's needs. My question is: Is there a site where I can order custom raspberry Pis in bulk with my code already on ...
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5answers
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Is there a component out there that can push a button i.e. will extend a rod about 1 inch and then retract it?

I'm basically trying to find something that can push a button for me. I want to be able to control it through code, just like you can with motors, LEDs etc.. via the GPIO on a Pi. I want it to extend ...
5
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3answers
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Connection between Raspberry Zero and Raspberry Pi 2 or 3

I need to establish a connection of four Raspberry Zero with one Raspberry Pi 2 or 3 to send videos filmed by the Raspberry Zero. The Raspberry Pi 2/3 should be the main and the others (Zero) would be ...
5
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2answers
714 views

How many cores does the Pi 2 model B use by default?

How many cores does the Pi 2 model B use by default when executing a command? The reason I am asking this is my friend told me to use the suffix -j4 when I ran the code sudo make. He told me that it ...
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3answers
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Do the GPIO registers have the same addresses on the new Raspberry Pi 2?

So I just found out that the Raspberry Pi 2 came out, and I'm wondering whether stuff like this would work on it without any modifications (except for recompiling it for ARMv7 of course). This piece ...
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2answers
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How to approximate room temperature in a better way

I've just bought an Enviro pHAT. The temperature sensor on my pHAT reads around 31 degrees Celsius for my room This sensor is close to the Pi, so it also gets a heatwave from the CPU Is there a ...
5
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1answer
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Android Things on Pi 2

I wanted to get started a bit with Android Things with my Pi, but I noticed there is only manuals for the Raspberry Pi 3. Does that mean there is no support for the Raspberry Pi 2? Is there a way to ...
5
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2answers
172 views

Reliablity for devices produced with a raspberry Pi

I have succesfully developed a computer vision solution on my raspberry pi. Now this solution would help a lot in the transportation area of my country and I want to start selling it. I don´t know ...
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2answers
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Disk Migration between same model rPI

If I remove the SD card from an Raspberry Pi 2 and move it to another Raspberry Pi 2 (same model) Can I expect it to boot correctly? What modifications need to be made / considered so that the stack ...
5
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1answer
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Correctly partition 4TB drive with enclosure using Pi

When I first connected my new hard drive enclosure with 4TB drive to my Pi, the drive was not listed when I typed sudo fdisk -l. I want to mount this drive, but I think I first need to partition it ...
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3answers
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GPIO Signals Over Long Wires

I did some searching and found a few topics related to this, but most seemed pretty old and I didn't get a clear answer. My hardware/circuits knowledge is pretty basic, so please bare with me. I have ...
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3answers
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White noise through audio jack

I have been using Sonic Pi recently and have been annoyed by a persistent stream of white noise. This has happened on both Raspbian and Ubuntu MATE 16.04 for Raspberry Pi, using SENNHEISER MX356s. Is ...
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2answers
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How to solve `Segmentation fault` error on every sudo action?

I newly installed (again) Raspbian from Noobs and updated, upgraded and dist-upgraded. After all of this i reboot my Pi and tried to sudo su and got Segmentation fault error. Tried rebooting and re-...
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How to install Waveshare SpotPear 4 inch LCD in RaspberryPI 2?

I've bought 4inch IPS LCD from WaveShare but cannot get it run on newest Raspberry PI 2. The original DVD comes with image which isn't compatible with RPI 2. Tried to follow this manual but without ...
5
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1answer
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Camera, Ubuntu, modprobe bcm2835-v4l2 ERROR: could not insert 'bcm2835_v4l2': Operation not permitted

I have added a camera to the raspberry but I get the following when trying to load the driver: root@deadlock-desktop:~# modprobe bcm2835-v4l2 modprobe: ERROR: could not insert 'bcm2835_v4l2': ...
5
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1answer
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Activate virtualenv & start script on boot - RPi

I am trying to start a python script that exists in a virtualenv from bootup on my RPi. From reading this post and the RPi rc.local post I know that I will have to add something like this to /etc/rc....
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3answers
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New PI 2 B+ unusably slow, CPU and RAM not being used?

Just setup a new R Pi 2B+, using raspbian on a 16gb sd card, ethernet, USB mouse/keyboard and HDMI out. Finding it extremely slow - the UI is reasonably responsive however installing monodevelop took ...
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3answers
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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 ...
5
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1answer
881 views

Speech to text conversion for Raspberry Pi 2

I'm new to this Forum as well as using Raspberry Pi 2 for the first time. I'm currently making a learning device for a blind person. My project requires text-to-speech and speech-to-text conversion to ...
5
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1answer
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Raspberry Pi 2 and thermal printer

I try to print some text with python and a thermal receipt printer by a Raspberry Pi 2 model B. I use the library developped by Adafruit and the printer sold by Adafruit too. But it fails. The only ...
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3answers
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Not able to detect camera on Raspberry Pi 3

I have installed the "RASPBIAN STRETCH WITH DESKTOP" from https://www.raspberrypi.org/downloads/raspbian/ I have plugged in my camera module correctly (blue stripe facing towards the Ethernet port) ...
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2answers
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Unable to integrate Fingerprint sensor in Raspberry Pi2

I am trying to connect a R305 v1.6 fingerprint scanner with my Raspberry Pi2 Model B. Sensor: http://www.sunrom.com/p/finger-print-sensor-r305 I am using pyfingerprint module which supports ZFM-20 ...
5
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2answers
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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 ...
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2answers
356 views

Power regulation circuits on B+ vs 2 (light sensitivity)

I've seen recent articles on the Raspberry Pi 2 being affected by a light source (http://www.raspberrypi.org/forums/viewtopic.php?f=28&t=99042) . Apparently the cause is in the power regulation ...
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5answers
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Bluetooth buttons and mpg123

This is my first post. I have started a project with a rpi2 that currently allows me to bluetooth my rpi2 to a bluetooth speaker. On that bluetooth speaker there are three buttons. One that plays and ...
5
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1answer
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Install Qt Framework on Raspberry pi 2 B+ on Windows 10 IoT

Qt embedded system is very useful in this topic but it is not open source, it has a price for every year and it isn't cheap. Windows 10 IoT is awesome OS, with PowerShell you can start OS with a ...
5
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1answer
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Pi2 Flashing Green Light Only

My Pi2 no longer boots. I just get a steady flashing green light. No obvious pattern, just continuously flashing every second or so. No red light. It's connected to an official power supply like this:...
5
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2answers
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What GPS dongle / device works with Windows 10 IoT and Raspberry Pi 2?

Are there any USB GPS dongles / devices for Raspberry Pi 2 that work with Windows 10 IoT Core? Alternatively, how about a Pi HAT using the I/O pins?
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7answers
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Setting up PBX using Asterisk and Free PBX, with skype, PSTN (Talk Talk UK), and gsm gateway in the future

I am thinking of setting up a PBX at home. I am reasonably tech savvy but have never set up a PBX before. There seems to be a lot of info out there but I was wondering if someone could: Sense check ...
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3answers
2k views

rPi2 model B v1.1 smoke comes out near power port

I am trying to control 2 motors using the E-gizmo Motor driver shield but suddenly smoke comes out near the power port of the raspberry pi 2 so I immediately unplugged the power supply. After that, I ...
4
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1answer
25k views

Why my program won't communicate through ttyAMA0 on Raspbian (Jessie)?

I am running two different Raspberry PI and they are running Raspbian Wheezy and Jessie. On Wheezy, I simply commented out a line T0:23: respawn:/sbin/getty -L ttyAMA0 115200 Vt00 in /etc/inittab file....
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4answers
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Raspberry Pi stable date time

I'm working on a Raspberry Pi project, in which date and time are the most important factors. So, I want them to be very accurate. I know there are two methods to configure the Raspberry Pi's date ...
4
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2answers
6k views

RabbitMQ Server Installation

I would like easy installation instructions for RabbitMQ Server on my Pi. I tried a lot of things from various sources and they just don't work. One source even said RabbitMQ Server is pre-installed ...
4
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2answers
7k views

No sound with Rpi 2

I am using Rpi2 installed with ubuntu mate.I've got these speakers but when I plug into the audio 3.5mm jackout there is no response from speakers. The speakers are working fine with other devices.Is ...
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4answers
568 views

Weather Balloon - How to Transmit Data? [closed]

I am thinking of making a weather balloon, but I have not found a way to transmit data between the ground station and the balloon. Do I have to buy a special part? And if I do, what is the cheapest ...
4
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2answers
1k views

Calculation of current consumption of a Raspberry Pi 2 Model B

For my data logger project, I used a Raspberry Pi 2 Model B to log the temperature and humidity in a room. To run the Pi, I used a 10000 mAh power bank and I wanted to test how long the Pi could ...
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4answers
803 views

Did I destroy my GPIO board?

I bought a 30mm DC fan to cool off my Pi. It worked just fine if I plugged it into the 5V and GND pins. However, I wanted it to be programmatically controlled, so I plugged it into pin #18 and GND. ...
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2answers
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Having an issue with Bluetooth Manager/Pairing on the Pi

The Issue: I'm having an issue with my Mac where if I try to pair it with my Pi using Bluetooth, it connects after confirming the code it displays, then after about 5-10 seconds, it randomly ...
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1answer
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RPI2 USB webcam capture low FPS

I want to capture a USB webcam with my RPI2. I'm using a Microsoft Lifecam HD-3000. The problem is that I can't get 30 FPS with a resolution 640x480. I think this is abnormal for a quad-core CPU. On ...
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1answer
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Difference between raspbian and other armhf OSes for Rpi 2

Recently, I was trying to install OpenCV with TBB support on raspbian. I wasn't able to do so. On raspberrypi.org forum, I read a comment that for TBB support, you need a real armhf OS not a raspbian. ...
4
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1answer
913 views

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!
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Can you use a micro SD card from raspberry pi B+ on the raspberry pi 2 model B?

Can you use a micro SD card from raspberry pi B+ on the raspberry pi 2 model B?
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2answers
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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 ...
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2answers
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Use 3.3V regulator on 5V rail with GPIO

I would like to run a the LD1117H linear 3.3V regulator on my Pi's 5V rail in order to provide more current than the 50mA that the onboard 3.3V rail provides. My concern is that this is not entirely ...