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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Raspberry Pi sudden shutdown, excessive heat

I have a Raspberry Pi model 2 B with Raspbian. When I plug in the power source, only the Green LED blinks, no Red LED. The OS successfully boots and I can use the Raspberry perfectly. As soon as the ...
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Accessing the system log on Raspbian

How do I access the system logs in current versions of Raspbian? Where are these logs stored?
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1answer
736 views

GPIO stuck in High Mode

I'm new to this whole RP world, and I'm trying to learn it. I've been trying to follow this post, and connected my Pi this image below Connection between Pi and Adafruit T-Cobbler Plus Wiring ...
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202 views

Raspberry Pi 2 revisions

In electronics many boards go through revisions as various chips are end-of-lifed orreplaced for cost cutting. In industry this is very important so that we can have a stable base for several years. ...
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pigpio - set_PWM_dutycycle vs hardware_PWM

What is the difference between the set_PWM_dutycycle function and the hardware_PWM function in the pigpio python library when assuming the same frequency is set for both the functions. Will I get a ...
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How to build Native WebRTC?

I am trying to build Native WebRTC on Pi2 using the following commands sudo apt-get install git sudo git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git /opt/depot_tools echo "...
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406 views

SMS API via Raspberry PI

I want to calculate the temperature and humidity via sense hat integrated with Raspberry Pi 3. Is there any free API for SMS available currently?
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1answer
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C# service to run on Windows 10 IoT

I've developed a Windows based service, is it possible to install the service to Windows 10 IoT? If YES, please state how. TQ P/S: I'm using PI-2 model B
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1answer
786 views

Thermal printer does not react

I'm (now for some weeks) trying to get a thermal printer (ttl) to work without success. I've done every step exactly like said in this tutorial but the printer does nothing. Since I don't know how to ...
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Schrodingers PI; dead or alive?

last days one of my Pi2 crashed over night. At morning i realized the Pi is down (no response on network, plugged to monitor and keyboard did not give any response) I plug out/in the power supply to ...
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1answer
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Windows 10 IOT equivalent of i2cdetect

I am trying to troubleshoot an I2C device connected to my Raspberry PI Model B. The device is giving me the following error: System.IO.FileNotFoundException: The system cannot find the file ...
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1answer
286 views

Can I use my raspberry pi 2 OS for raspberry pi 3 directly?

I recently got hold of the Raspberry Pi 3, and wonder if I safely can use the same SD card loaded with Raspbian that I currently use for my Raspberry Pi 2 on the RP3 as well. The reason for wanting ...
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Can you use the same SD card on 2 different Pi's

Im looking at using 4-5 Pi 2 in the house front rooms bedrooms etc What I was wondering is if I take out my current setup and put into a brand new Pi 2 would it boot up just the same?
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Nextcloud Box Performance

As most of you probably know, nextcloud released the nextcloud box with support for RPI2 and with future softwareupdates RPI3. My question is, has anyone bought the Nextcloud box? If you have, then ...
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1answer
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FFMPEG Raspberry Pi to Facebook Live Stream

So I've been streaming video to YouTube just fine with the below command. I then wanted to do the same thing with Facebook on my page, and I get a strange Authorization error. On the Facebook side, ...
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The Hashrate of the Raspberry Pi 2 and 3

I've been searching for a definitive answer to the above question, but somehow only seem to find semi-true statements (according to replies to these statements), or very outdated answers (for example ...
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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
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Share internet over USB

I have my Raspberry Pi 2 Model B connected to the internet via an ethernet cable. I now have a second device (It's an android phone, but that's not important) that I connect to the Raspberry Pi via ...
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1answer
609 views

Edimax EW-7811Un WiFi not working with RPi2 on cold-boot

I use a freshly installed Volumio (based on Debian) instance on a Raspberry Pi 2 Model B Rev 1.1 equipped with an Edimax EW-7811Un USB device to get WiFi. Power is supplied from a HifiBerry AMP+ sound ...
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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 https://...
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Boot the Raspberry Pi 2 with custom kernel and initramfs

I want to boot my Raspberry Pi 2 with a custom configuration. Therefore I have a kernel image and an initramfs file. The /boot directory looks like this: /boot/my_kernel.img /boot/my_initrd.img I ...
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Connecting smartphone to raspberry pi via usb

I'm facing a problem: I can't turn on usb tethering on my phone while it's connected to the pi. The phone says the device is not connected anywhere. The pi also doesn't recognize the device, but the ...
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Can I watch website video with Silverlight based player on Raspberry Pi 2?

I recently got my hands on the new raspberry pi 2. So far I'm enjoying my experience with Kodi (using OSMC). Among the projects I want to accomplish with this device, is a way to access this website (...
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Raspberry Pi 2 7" touchscreen display white screen error

I am making a tablet with a Raspberry Pi 2 Model B for a school project. The problem which I have is the screen is blank white. I have checked the wiring with the jumper cable, the ribbon cable is in ...
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431 views

Raspberry Pi 2 not booting connected to network

I bought the Raspberry Pi 2 last week. When booted without Ethernet cable plugged in it works fine. When I connect the cable to Ethernet port on Pi, it simply does not boot. The lights below Ethernet ...
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Read status of power led using sysfs

I want to read the status of GPIO35 on a Raspberry Pi 2 Model B using the sysfs on Raspbian with a 4.0.8-v7+ kernel. I can access other GPIO pins using /sys/class/gpio but the two leds are already ...
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1answer
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Video and audio out of sync when playing 1080p 60fps on Raspberry Pi 2

I have a 1080p @ 60fps mp4 video saved in a external USB HDD. I've tried playing it on Raspbian in my Pi 2 (the new one, 1 GB RAM, 1 GHz) with Omxplayer, but the audio and video are out of sync. The ...
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Make Raspberry Pi 2 into a video capture card

Is it possible to transform my Raspberry Pi 2 model B into a capture card, I now know it will not be able to record 1080p in 60fps but it can be a fun project. Can I do it using a mix of C#/C++ and ...
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3answers
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Application to know how long my batteries will last?

I am new in the raspberry world and learning to program it with C# on Windows IOT Core. Right now I am working with it connected to the power supply. However I would like to develop an application ...
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Is rPi3 binary compatible with rPi2?

I've been running Mythbuntu on rPi2 for some time. I bought a couple of rPi3s in an effort to improve performance a bit. However, when I put the SD card from my rPi2 into the rPi3 the boot just shows ...
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3answers
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PiHole not resolving local DNS entries

I have a piHole set up on my network with address 192.168.2.10 My router is 192.168.2.1 and the DNS settings on the router point to 192.168.2.10 meaning all traffic that goes via the router (which is ...
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757 views

How to make Raspberry shutdown when internet/lan disconnected

I've already seen this link How to make Raspberry shutdown when I unplug the ethernet cable, but this solution does not work on Raspbian stretch since its network interface file/folder structure is ...
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1answer
641 views

Does Turning The GPIO Pins On/Off Without Any Circuits Connected Harm the Raspberry Pi?

So, i'm just getting into raspberry pi and I am yet to have my order of circuit parts such as LEDs and resistors arrive. My question is that if I turn the GPIO pins on without any circuits attached ...
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222 views

Julia not available in Raspbian?

I am trying to install Julia: $ sudo apt-get install julia Reading package lists... Done Building dependency tree Reading state information... Done Package julia is not available, but is referred to ...
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431 views

Issue with multi-user NAS setup

I want to build a NAS server with multiple users. To test this I created 2 users, pi and pi2. The external drive is mounted in /media/pi. Here is the ls -al output: drwxrwx--x 4 pi nasusers 4096 ...
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1answer
722 views

Run armv6 software on raspberry pi 2

Is it possible to install and run software that was designed for the raspberry pi 1 on my raspberry pi 2? I plan to install this software along with arch Linux soon and I would just like to know if it ...
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How to control the 5v output from raspberry pi to open and close a relay

I connected a protective relay to raspberry pi +5V (to relay VCC), GND (to relay GND) and pin 17 ports (to relay IN) . This relay controls a DC motor. The DC motor has a separate power supply ...
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My pi 2 doesn't fit into my B+ case

I have a case for my pi B+ that came with it, and I can't seem to make my pi 2 fit into it. The case is the one that comes with this kit. I'm only confused because I was made to undestand that the B+ ...
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4answers
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Raspberry Pi 2 stuck on rainbow screen

My brand Raspberry Pi B+ works perfectly when I plug in an sd card, HDMI cable, and power. When I plug the EXACT SAME wires + card that work for the pi B+ into my new Pi 2, it freezes at the rainbow ...
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988 views

What is windows 10 like for the Pi 2? [closed]

With MS support and all for the new Pi 2, what exactly can one expect from the windows 10 Pi version? it's being targeted at the "Maker" community, for applications in the IoT space and home ...
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Raspberry Pi C++ IDE

I would like to be able to code in C++ on my Raspberry Pi. I know that you can edit, run, and compile with only the command line, but I would like a more familiar IDE, such as Visual Basic or ...
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1answer
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Raspberrry Pi 3 as a RAID

I found some articles that discuss the possibility and the technical details of building a RAID with USB drives using a Raspberry Pi. However, there seems to be nothing out there that re-visits the ...
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Raspberry Pi cannot create temp file for here-document: No space left on device

I have a 16 MINI SD CARD been used in my Raspberry Pi . I currently have a few programs installed like vim and etc which should only take up around 300mb in total. Why does it say my /root directory ...
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reconfigure locale failed

I run sudo dpkg-reconfigure locales via SSH. After selecting <Ok> I have the error message below $ sudo dpkg-reconfigure locales perl: warning: Setting locale failed. perl: warning: Please ...
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1answer
267 views

Multiple /etc/rc.local?

I run a Python program in a screen session which is started from my /etc/rc.local with this command: su me -c "screen -d -m /usr/bin/python /mnt/usbdrive/pgms/mypgm.py" Recently my program has been ...
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why GPIO.LOW is used to turn the switch on?

I am learning raspberry pi and somewhere i found the tutorial of turning the bulb on when clap is heard and off the bulb when clapped again. The following code was written for this to work #!/usr/bin/...
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Differences in GPIO between Raspberry Pi 2 B and 3 B

Is there any difference in the GPIO layout between Raspberry Pi 2 B and 3 B? If yes, please provide the differences.
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1answer
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Split screen cloned display

Is it possible to split a Raspberry Pi display so that it shows up twice on one screen? I'm building a costume that covers my face. To be able to see, I've got a Raspberry Pi with Pi Camera and a 7" ...
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2answers
5k views

Smoke sensor MQ-135

Does Smoke sensor MQ-135 need to be connected to ADC if it has separate pin for analog and digital outputs? I'm about to interface it in raspberry pi.
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4answers
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How to know when the pi finished shutting down

I wrote a python program that boots with pi, do it's job, and shutdown pi when finished working. It works fine, and when I'm connecting an lcd to the pi, I can know whether the pi finished shutting ...