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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Which OS should I install on an old Raspberry Pi 2b [closed]

I have an old Raspberry Pi 2b. My SD went nuts, so I have to install OS again. I tried raspbian 9, but everything seem soooooo sloooooow. I would love kodi, but I can cope with just a media player (...
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1answer
53 views

How to send file from Web Application to Raspberry Pi?

I am working on a project which I have to send file from my Web Application(Node.js) to multiple Raspberry Pis. The problem I'm facing is that I don't know how to send file generated by the Web App ...
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1answer
133 views

Raspberry PI + OpenNI2 + OpenCV

I have opencv installed on RPi. Now I need to install OpenNi2 and I have this error: "error: array subscript is below array bound" I use: PLATFORM=Arm make gcc -v 6.3.0 How to solve the problem ...
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1answer
127 views

Missing L4 chip near HDMI port, not boot up and usb port no power output

My rpi work perfectly until I touch it, It not boot up then I found the L4 chip HDMI port is missing(I have touched HDMI port I think my fingernail pull it off...). I found that tiny chip in the box ...
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2answers
364 views

Raspberry Pi UPS - Thoughts for off shelf items

I've been looking at off the shelf raspberry pi UPS/shutdown controllers. I've come up with 4 and wanted somebody to weigh in on the choices. My use case is pretty strait forward. I want the pi to ...
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21 views

Raspberry pi not powering

I have a raspberry that I want to power with a battery (12V 7A) through a tension reducer (5V, max 3A). When I attach the board to the charger nothing happens. When I attach the same charger to a ...
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42 views

sd card write on Windows 10 Pro 64 failed

I try to write my RaspI SD Card on win10 using Etcher-Setup-1.4.4-x64.exe and 2018-04-18-raspbian-stretch-lite.img image. Write and verify looks good, but Raspi 2 Model B don't boot. I get no error. ...
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1answer
44 views

Three sites - three nginx conf files - all resolve to same directory

I recently tried one too many things and had to re-flash the SDCard in my Raspberry Pi. Started over with Raspbian Stretch Lite. Added nginx, PHP7.0-fpm and a self-hosted social media service (Pleroma)...
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3answers
2k views

Arduino-Raspberry Pi fast data communication through serial

I am trying to sample from two analog sensors at highest frequency possible (using and Arduino Uno, MPC3002 ADC), then send the data to raspberry pi to save them as binary file. Arduino and MCP3002 ...
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90 views

Pi not booting: Error on SD and only flashing cursor when booting

One day I started my Raspberry Pi and it crashed, so I flicked the power off. I restarted it and it booted like normal but I noticed an error avahi (SD issue). When it came to the desktop part it ...
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1answer
669 views

How can capture many images using picamera and loop and different name? [closed]

Here's my current Python code: import picamera with picamera.piCamera() as camera: for i in range (10): camera.capture("/home/pi/Desktop/newfile/newimage.jpg")
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1answer
34 views

How do I get camera to connect to anyone's phone and let the phone take picture using the camera and get that picture back?

I have an idea but not sure if I can Raspberry Pi to do this. So I have this camera in public that anyone can use. Anyone can connect to the camera using their phone and take picture with it, and get ...
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2answers
738 views

Check relay module state

I found a few good answers and guides about how to control a relay module from the pi, however, I want to find a way to check its state/status from the pi, is there a way to determine if the relay is ...
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1answer
38 views

How do I connect my Debian 9 computer to my Raspberry pi 2 using the ethernet connection to share the pi2 wireless?

I have the recent version of Debian in my computer and a recent version of raspbian in my PI2. I want to connect Debian to Raspberry pi 2 using an ethernet cable, connecting my Debian to share ...
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1answer
1k views

How to wake and sleep pi using microcontroller

I am looking to put a raspberry pi to sleep using a uC to save power and to also wake it back up when the uC needs to unload processing requests. Unfortunately, I need an SBC of some sort with this ...
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2answers
922 views

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
275 views

How to prevent raspberry to connect with open wifi?

Actually i am working on a project. I want my raspberry to stay connected with my DSL wifi. But raspberry connect with a open wifi automatically . Thats why i lose connection. Please help me that how ...
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53 views

How do we connect a camera using a Raspberry Pi 2 to an iPhone?

How do we connect a camera to a raspberry pi 2 that connects to an iPhone over live video? We are willing to buy any camera that is necessary.
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29 views

How to convert Images from database(cloud) to timelapse video via raspberry pi?

hye, my project is about timelapse but we are not using the rpi camera to capture the images instead we are using DSLR camera for some reasons. once it captures, the images would be saved into the ...
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1answer
364 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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0answers
155 views

Cannot install libextutils-cbuilder-perl - “Unable to correct problems, you have held broken packages.”

I am trying to install sli3er engine on a Raspberry Pi using this document. However, when I install the dependencies, I got an error here; INSTALL COMMAND: sudo apt-get install libextutils-cbuilder-...
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0answers
112 views

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 ...
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0answers
273 views

Error running headless jackd

I'm following the instructions here to run jackd on my headless Raspberry Pi 2 Model B. The only difference is that I'm using the standard packaged jackd instead of the autostatic ones mentioned ...
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0answers
730 views

Cannot connect to raspberry Pi through windows 10 file explorer network

I'm trying to use my Raspberry Pi to set up a print server. I've been following this:, and I got to the point where I had to access the Pi on another computer. When I went to do said step, I couldn'...
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1answer
282 views

RPI2 interfacing with GSM sim 900

I want to interface rpi2 with gsm module, below is the code for it in python. After running the code i am not getting anything as output except newlines. I have enabled serial interfacing for rpi2 and ...
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1answer
377 views

Carberry on Linux Raspbian

I recently bought a new Carberry (http://www.carberry.it/index.php) for Raspberry Pi B 2/3, together with its Carbian OS and installed it on a Raspberry Pi3/ModelB. However, It shuts down few ...
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0answers
244 views

Get modem msisdn from incoming smstools

I have device and modem connected with sim card. And I have raspberry and smstools installed in the device. It all works very good with smsd configuration. When sms is sent to the the number of the ...
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1answer
31 views

Setting up an AIS Reciver [closed]

I want to set up an AIS receiver on my pi. Any ideas how this can be done. I have a generic RTL-SDR USB stick.
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2answers
720 views

Reading values from a standard digital kitchen scale via raspberry pi [closed]

Is there a way to read the values from a standard digital scale via raspberry pi ? what I'm trying to do is, to get my kettle to work via raspberry pi. My however I need to come up with a way to ...
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2answers
63 views

macos x installion rapsberry pi

Hi I just installed my Pi according to this tutorial https://www.youtube.com/watch?v=4Fe1C1D5DhU but I got just one MacBook so as I put the SD card back, it shows this error The disk you inserted ...
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1answer
140 views

Raspberry Pi 24/7 Modbus Rtu proyect

the conpany i work for is making a proyect, we made Modbus RTU connection using raspberry pi 3 as a gateway, and saving the data to Mysql. this proyect have to be 24/7 and running forever, im ...
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1answer
25 views

Raspberry pi ok as usb drive

I want to make a raspberry pi model B , into a usb drive. I know that there are many tutorials available over the internet, but I want to make a change in it , which I can't find anywhere. Goal: The ...
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2answers
1k views

NRF24L01 Arduino and raspberry

I've been trying for long time communicate arduino and raspberry pi using NRF24L01 module, for now it has been impossible. I followed the next tutorial: Tutorial NRF24L01 connections Arduino: CE - 9,...
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1answer
112 views

Raspberry Pi LED Not Turning On With Button

So, I am trying to use the raspberry pi model 2b with Debian to control a LED light using a button. But, when I run the python script (made with python2 btw), it brings up no errors, but instead when ...
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0answers
12 views

Enable sharing - I don't know which options in the drop-down to choose

I have connected my Raspberry 2 to my PC with a ethernet cable and a USB cable. I use wifi. But when I try to enable sharing I don't these options in the drop-down. Ethernet Virtualbox host-only ...
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1answer
558 views

Anyone get direct esp-now to raspberry pi (or other linux wifi device) working?

It would be nice to be able to use raspberry wifi to receive ESP-NOW messages directly and eliminate another ESP-to-PI device to manage. I think this is where @ Alexandr Zarubkin was going but I don'...
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4answers
134 views

How to know the IP address of a Pi without an Ethernet or a display

I use a raspberry Pi 2. I have already installed raspbian and configured to a network using a usb-wifi a while back. Now I've moved to another place and I don't have an ethernet cable/ hdmi ...
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1answer
541 views

Send Data from a Raspberry Pi to a Webservice with a Python Script?

I have a Webservice wich is reachable over a URL and I have a Raspberry with different sensors wich measures the temperature and co2.Now I want to write a Python script to send this values to the ...
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0answers
45 views

RPI - Rainbow Screen after SSH reboot - Parrot Security ARMHF

I cant seem to find a definitive solution to my problem. I have learned now by this THIRD occasion that I cannot simply "reboot" from SSH without killing my RPI Parrot installation and having to ...
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0answers
19 views

Micro-Sd memory problem

i am using a 64gb micro-SD but after using etcher for kali (7 Gb), i have only 55 mb left! How can i solve? I tried to burn the .img again but the problem is everytime the same
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0answers
219 views

Pi Crashing - NTP Issue ?

I am running a Raspberry Pi 3 as a weather station at home, and it will crash every couple of days. When I restart, the only clue in syslog is: Apr 15 13:35:27 weather systemd[642]: Time has been ...
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1answer
451 views

Raspberry Pi Model 2B Hostapd installation error: Unable to locate package

So, I am trying to set up my raspberry pi model 2B as a wifi hotspot. All the articles recommended installing and using hostapd and dnsmasq. I was able to install the dnsmasq package without any ...
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0answers
255 views

How can I create a bootable disk/image for raspberry pi?

I want to to create a (kind of) preset image for raspberry that will include some application set up that I'm working on a project of mine. So, let's start with a simple problem so that from this ...
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4answers
784 views

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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1answer
47 views

Permanent & Safe Powering of Raspberry Pi in Confined Space

I have a small project that involves the automation of the lights in a room using a Raspberry Pi and a set of four relays. All of the software and hardware is operational, and it is ready to be ...
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1answer
263 views

Panel settings: System panels all aligned left

I mucked with my panel settings using a janky mouse, and somehow removed a setting that had my system (clock, wifi, sound, etc.) on the right, and the Menu + custom apps on the left. Now everything's ...
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2answers
2k views

Is it possible to use a mSATA SSD AND SATA HDD on the same Raspberry Pi 3 Model B+? (and/or a M.2 SATA)

I'm working on a setup for my new RPi 3 B+, and I was wondering if it's at all possible to use both mSATA SSD storage (attached via the mSATA SSD storage expansion board) in addition to another SATA ...
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1answer
668 views

Is it possible to connect multiple DHT11 modules to Raspberry Pi 3?

Can I read at least 3 DHT11 sensors using GPIO with a Raspberry Pi 3? And if yes, how? Now I only have 1 DHT11 connected to the Raspberry Pi, but I used a library and I don't know how to add more ...
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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 ...
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0answers
231 views

Using NFC chip PN532 on RPi 2 model B

First of all, please bear with me as I'm very new to electronics! I'm trying to scan NFC tags with my Raspberry Pi and use that (ideally) from a NodeJS project. The NFC chip I bought is this one (it'...