0
votes
0answers
4 views

How likely is a Pi to be damaged when it is plugged out

I have a setup where a Raspberry Pi will be used in a headless mode, inside a model. The model will be used during the day, and then plugged out at night. Since I won't be there when it is in use, I ...
0
votes
0answers
6 views

Connect to public wifi hotspot

I need to connect to a public wifi hotspot. The wifi is open but I have to authenticate through a webpage (on mac a window open with Join "Wifi_network" or on Android "sign in to wi-fi network"). How ...
0
votes
1answer
6 views

Grab HDMI/VGA in video feed

I have a VGA/HDMI video feed that I need to input into the Pi and stream to a server, but I don't know how to input the feed and once it is input, how to grab it and send it to ffmpeg to compress it ...
0
votes
0answers
9 views

Raspberry Pi 2 and SH1106 OLED

I am trying to get a cheap SH1106 1.3" OLED from eBay working with my Raspberry Pi 2. Frm the eBay description, it says that it supports "I2C/IIC Interface, need only 2 IO". I am however not able to ...
0
votes
0answers
7 views

Tethering two android devices by usb to one pi

My goal is to be able to recycle some old phones as screens for the Raspberry Pi by having them connect to VNC server instances and/or SSH. I set them both to use usb tethering, and I can get both ...
0
votes
0answers
4 views

Error mounting NFS unit between synology server and RaspberryPi client [migrated]

I'm trying to mount an NFS (v4, or v3.. but get the same error...) from a Synology Server to a RaspberryPi client. But I get this error: mount -t nfs4 IP_address_of_server:/volume1/nfsnvf /mnt/nfsnvf ...
0
votes
0answers
21 views

Operating system?

I just got my Raspberry Pi 2. I'm using my tv as a monitor and a keyboard. The first thing that popped up on the screen was download options. I clicked all of them because I had enough space and then ...
0
votes
1answer
13 views

Blank screen raspberry pi2 press OS? [duplicate]

I just got my raspberry pi 2 , I'm using my tv as a monitor and a keyboard. The first thing that popped up on the screen was download options(I would give the names but I don't Remember) i clicked all ...
1
vote
1answer
21 views

Listen to 433mhz signals in the background

how can I listen for 433mhz signals in the backgrounds from boot on? I am using this receiver / transmitter pair here. An arduino sends signals to the raspberry pi and I want to listen for them in the ...
0
votes
0answers
8 views

Why must LibreOffice “Start Recovery” to retrieve documents?

On a Pi2 under Raspbi, after clean closure of my document, LibreOffice, then the OS & Pi, my document always must be retrieved by the "Start Recovery" process. Did I miss a step?
0
votes
1answer
20 views

Getting my first TWI program working?

I am new with Raspberry and frankly didn't do programmation for 20 years. I am learning Python pretty fast and also acquired the PI2 and the HTU21D-F I was under the impression this was an easy ...
1
vote
0answers
17 views

How to install PyQt5 on Raspberry Pi?

I need to install pyqt5 on raspberry pi that has Rapbian on itself. please help me how to do that
0
votes
2answers
23 views

Raspberry Pi jumper

This is a strange question, but I just want to see if it's possible. Basically, would I be able to safely connect the 3.3 or 5v cable to another GPIO pin as a sort of jumper? So for example, if if ...
1
vote
1answer
13 views

How to read Wiegand card ID?

I need a simple script that outputs ID of presented card in console. I tried a lot of opensource code that based on WiringPi library, e.g. Pidoorman, its forks by Kyle Mallory and E.J. Dyksen, RFID ...
1
vote
2answers
15 views

Automatically copy files from Raspberry Pi to Mac

For now, I'm using motion to create snapshots and place them in /home/pi/motion. I am using FileZilla to be able to access that directory and to then move the images inside. Is there a way I can ...
0
votes
1answer
16 views

Python Serial library for RaspberryPi2 tutorial/command list

I have a problem with using the UART on RPi2. I tried every program found on the internet but nothing works. I checked every baud rate of my two BT modules but whatever code I use I've got errors ...
1
vote
2answers
27 views

Raspberry Pi 2 wont turn on, just blinking green

I just got my Raspberry disconnected from a 1 meter USB cable and then connect an extension USB cable (about 2 meters). Before replacing the cable the Raspberry functioned normally, but after ...
0
votes
1answer
47 views

Can the raspberry Pi 2 B be used as a media centre?

I have my Raspberry Pi B+ hooked up to an HDD and serving my media successfully. I never hooked it up to a TV as a media centre since I wasn't to convinced on the device's strength to do this ...
1
vote
1answer
17 views

GPIO - RuntimeWarning: This channel already in use, continuing anyway

I was trying to run a motor using the Pi. It was working fine before when I was executing using a Python script. Later I installed WiringPi and tried to execute the GPIO using shell script and it ...
0
votes
0answers
9 views

How to compile OpenCV 3 sample C++ programs? [on hold]

How can I compile OpenCV 3 C++ samples? In OpenCV 2.4.8, there is a build_all.sh file but OpenCV 3 doesn't have one.
0
votes
0answers
9 views

Raspberry Pi Project for curbing vocal bad habits?

I'm not sure if this already exists or not, but...I have an issue where I have a nervous laugh, and a friend of mine has an issue where they are too loud. I am wondering if it would be possible to ...
0
votes
4answers
49 views

Is it possible to shut off a Raspberry Pi 2 b using the GPIO pins?

I know there are plenty of guides out there for making a switch that uses the GPIO pins to shut down the Pi, but all of them use quite a lot of circuitry, but what I want is to just put a paper clip ...
0
votes
1answer
11 views

Is Fedora REMIX being supported anymore - is a updated Pidora release available?

As a Fedora desktop user, and having just battled through trying to get stuff vaguely up-to-date on Raspbian (wheezy base image), I though I could install Fedora REMIX (i.e. Pidora) to see if it would ...
0
votes
1answer
15 views

How to override wifi broadcast speed limit?

In the 802.11 protocol broadcast happens at minimum speeds (usually 1 Mbps) since there is no ACK system to know if the packet has been delivered successfully. But I want to broadcast a video stream ...
0
votes
1answer
21 views

How to use JSN-SR04T on a Raspberry Pi?

I want to try out JSN-SR04T, which is an ultrasonic distance measuring module, that is also supposedly water proof. The main reason that i want to try this module over the HC-SR04, is because the ...
0
votes
0answers
14 views

Wireless Reed Sensors

I want to connect a Raspberry Pi wirelessly to 2 read sensors, and Sensor - Reed Switch XRF development sensor - RS and Slice of Radio - Wireless RF Transceiver for the Raspberry Pi look like what I ...
4
votes
3answers
31 views

Attempting to ssh from Mac Terminal

I'm trying to set up my Raspberry Pi as a VPN using this guide here however, I can't connect via ssh from my Mac Terminal to my Pi for some reason. Running the ifconfig command, my Pi's IP address ...
0
votes
0answers
15 views

OpenCV camera calibration is lagging on RPi2 with IR camera

I have a system running Arch Linux ARM with opencv-2.4.10-3. The Raspberry Pi 2 is connected to a Raspberry Pi Noir Camera. When i run the calibration the camera is lagging with what looks like 15-20s ...
0
votes
1answer
24 views

Dnsmasq DHCP not giving IP address

I have bought a RPI 2 for my 3D printer. My purpose is to access it remotely via wifi. I don't have a router, so I have created an Access Point on the RPI. I have also installed dnsmasq as the DHCP ...
2
votes
1answer
18 views

Output from pigpio unexpected

I have attached a DHT-22 weather sensor to my rev 1 raspberry pi after a fresh install of a recent install of debian. Following the instructions from https://www.youtube.com/watch?v=IHTnU1T8ETk I ...
1
vote
0answers
18 views

If I use a ribbon cable with my PiTFT, is there a maximum length?

If I wish to detach my PiTFT screen from my Raspberry Pi (Model B) using a ribbon cable, is there a maximum length of cable I can use to prevent latency issues with the screen? I saw in the PiTFT ...
3
votes
2answers
48 views

Raspberry Pi shuts down when not in use?

I have the raspberry Pi 2 running raspbian. I have set up SSH and using my USB webcam as a time-lapse security camera. When I stop the photo script and the Pi is on idle i think the Pi is turning ...
0
votes
1answer
21 views

GPIO HW PWM @ 143Hz and 20-80% duty cycle, with WiringPi's gpio utility

I've tried to find the solution from other threads but they all seem to miss the point to a certain degree, usually going into kHz and MHz, or into the SW GPIO territory that I don't need. I have a ...
-1
votes
0answers
13 views

i am unable to connect wifi when i am using raspberry pi in remote mode (i.e) using putty

I am able to connect to wifi, when i make connection with a monitor and a touch screen ,but when i am making the same connection with putty my wifi dongle blinks but when i am opening a browser it ...
0
votes
0answers
20 views

Adafruit 16x2 LCD not displaying properly

I'm trying to build a clock with an Adafruit 16x2 LCD and my RasPi B+ using Adafruit's tutorial. It works fine at first, but it will start displaying gibberish after a couple seconds. Any ideas as to ...
0
votes
0answers
22 views

Python 'DBUS' error [on hold]

I have two raspberry pi. one of them stream video and audio and other one record video and audio. both of them use Gstreamer. on the second Raspberry Pi I write a Python program that record video and ...
0
votes
0answers
29 views

Raspberry Pi 2 B will not display video and PWR LED will not turn on

Background & what I have tried: I have been working with 2 Raspberry Pis and everything has been working fine with both until today. Today when I went to power up the one that I normally used ...
0
votes
1answer
13 views

Connect to Raspberry PI Behind Private IP MiFi [on hold]

I have a Raspberry PI that I have set up overseas, the issue is that it's using a MiFi device so it's behind a Private IP - I'm aware of things like Open VPN, etc but I am unsure exactly what I should ...
0
votes
0answers
11 views

Warnings when opening programs via Python subprocess calls [migrated]

I am attempting to open an image and a text file that my Python (3.3.2) program is creating (the files are created without issue). The last two lines of the program are: subprocess.call(['leafpad', ...
1
vote
2answers
41 views

How many buttons at once?

I own Raspberry Pi 2 B and I wanted to create something like Novation's Launchpad. How many buttons can I connect through GPIO at once?
1
vote
0answers
40 views

16x2 LCD displaying blocks when connected with MCP23017

I am using a 16x2 LCD and have it connected with MCP23017 16-bit IO port expander. To display message to the LCD, I am using Adafruit LCD library. The also have a test python code to get it working ...
1
vote
1answer
9 views

Midori keeps opening a faq

i have a setup with 3 pi's that all start in fullscreen in midori and all off that works but after some time midori opens a new window with the faq page on it and it blocks the fullscreen anybody ...
0
votes
3answers
18 views

SPI library installation error

I want to read and write RC522 RFID by using raspberry pi. For that I want configure SPI communication. First I enable SPI in raspi.config. After that I tried to download SPI-Py package to enable SPI ...
0
votes
1answer
12 views

Where is the cronfile located at? [on hold]

I am writing a python program to go on the raspberry pi. I am currently making an installation script that will as part of its installation process, add a line on cron so that it will automatically ...
0
votes
0answers
20 views

Where can find a secondary sd board/slot for raspberry pi 2 [on hold]

Hello could you please inform me where i can find a secondary sd board/slot to connect it through 40 pin GPIO port of Raspberry pi 2? Thank you in advance.
0
votes
0answers
16 views

Wifi setup using dlink n150 usb

Im trying to setup wifi on my RPi 2b but im failing. When i connect my usb stick in the raspberry pi i can see that wlan0 is in the list of internet adapters. wlan0: departed But when i try to ...
0
votes
1answer
27 views

Error installing OS with Noobs

I have a Raspberry PI model 2B and tried to install Raspbian and OpenELEC through it. I followed the correct installation procedures and the installation succeeded the first time but OpenELEC was not ...
0
votes
0answers
17 views

Best way to play and blend videos with Raspberry Pi 2

I'm looking for a way to programatically play and blend two videos (and possibly an image as well) with the Raspberry Pi 2. According to my tests, it is crucial that the lib/framework can use hardware ...
1
vote
1answer
27 views

Failed install of Python3.4.3 on Raspberry Pi

I want Python3.4.3 and only Python3.4.3 on my Pi. I will be using a set up of 16-20 Pi's to teach Python Programming (and robotics) in a High School. Since Raspbian only supports Python3.2, I did a ...
0
votes
2answers
35 views

I am attempting to create a WiFi gateway

I'm unsure what this is called, but the situation is the following: I want to have a Raspberry Pi + WiFi USB Module connect to a WiFi network.. then share that connection with another router that is ...

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