0
votes
1answer
10 views

Setup a led that blinks via php server

I wanted to blink or just lit up an LED on my Pi GPIO pin via a server/website. I've the resources like Pi, LED, php server etc. I just don't know how to code to connect my Pi to server and control ...
0
votes
0answers
9 views

Raspberry have DNS, but 100%packet loss

Today I moved my raspberry of place, it s connected to the same switch, same router, but different port. I can ssh to it (so obviously, it connect at least to the switch), my PC is on the same switch ...
0
votes
1answer
15 views

Where to get / how to build a 50" / 1.25 m. long GPIO cable

I want to connect my 433.92MHZ transmitter to my Pi. The problem is, it's 50" away from my pi, and the only cables I can find online are 20 cm (8") long cables. I've thought about creating the cable ...
0
votes
0answers
4 views

How to fix: mount error(22): Invalid argument?

I used to mount a Time Capsule share and everything was working great. Recently, probably after a system update, sudo mount -a give the following error: $ sudo mount -a mount error(22): Invalid ...
0
votes
0answers
7 views

Problems installing lxml

I'm trying to install lxml (I need version 3.3.4) but when I try to pip install --upgrade lxml I keep getting build errors: gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall ...
0
votes
1answer
20 views

How to get the state of a GPIO pin bash

how do I get the state of a pin and store it in a variable in a scipt?
0
votes
1answer
27 views

echo: write error: Operation not permitted

Running as root user yet I'm still not permitted to use this: echo "21" > /sys/class/gpio/export echo "out" > /sys/class/gpio/gpio21/direction echo "0" > /sys/class/gpio/gpio21/value
1
vote
1answer
21 views

Heat buildup in Rasperry pi Cases

I'm looking to build a nice wood case for my Pi. However, I've noticed that the processor already generates a good deal of heat. Would putting my Pi in a case cause noticeably higher temperatures? ...
1
vote
1answer
29 views

Permission Denied for CPU Temperature Query

When i login as root user into my Rapsberry Pi, then i query for temperature using this command; pi@raspberrypi ~ $ /sys/class/thermal/thermal_zone0/mode -bash: ...
0
votes
1answer
9 views

Open Door with RPi and RITTO TwinBus Digital Door Bell System

What kind of circuit would I have to devise in order to read a certain amount of voltage (let's say 0.5V) from my RITTO Twinbus Door Bell system with my RPi? In detail what I want to achieve: there ...
0
votes
0answers
9 views

online music on XBMC

Is there a functional script for XBMC (on a raspi, obviously) that allows to listen to online music coming from grooveshark , spotify or whatever... needed NO premium or anyhow or pay-for-it account ...
0
votes
1answer
8 views

Is GPU accelerated Xorg server released

we are working C# windows form application. The rendering of form and form navigation is very slow. I was reading about the speed improved X org server or graphic driver about to release in 2013. Is ...
0
votes
0answers
16 views

how to interface raspberry pi and plc

am doing a project on controlling the plc by using raspberry pi. any one please suggest some sample coding and tutorial regarding this project. am already finished a coding part to connect a control ...
0
votes
2answers
27 views

Safest way to power a hungry Wifi adapter and the Pi from a single 5V source

My Pi is destined for the skies, so it will receive power at roundabout 5.3V via the BEC (battery eliminator circuit) which will be capable of delivering up to 10A (heavy duty BEC it is), so sourcing ...
1
vote
2answers
23 views

add user, and set user privileges, setting file permissions block certain commands?

I am wanting to make restricted user for a friend on my raspberry pi, I know how to add a user, but I never looked at adding restrictions to that user.. I tried googling but it seems its not a common ...
-6
votes
0answers
26 views

Thoughts on cool illuminated power switch? [on hold]

what do you think of this switch on Kickstarter? I think I'm gonna get one! https://www.kickstarter.com/projects/1312527055/illuminated-raspberry-pi-safe-shutdown-switch
0
votes
3answers
46 views

More Software PWM

I'm currently working on a project which requires more than one PWM signals for my LED drivers. I'm not looking for any additional hardware for this and so my focus is mainly on software PWM. Based ...
2
votes
2answers
50 views

How to get remaining Memory in SD Card?

I have 16GB Sd card where I installed Rasbian using Win32 Disk Imager. After burning the image in windows OS it shows only around 40+ MB of free Space, Since Rasbian is image is around 2 GB where is ...
2
votes
0answers
30 views

/sys/class/gpio values only working if python gpio script was used before

i have a problem with the gpio sysfs files. when i use cat to get the values of a gpio pin it will always show 0. but after using a python script ( ...
1
vote
1answer
42 views

Installing Python 3.4 on Raspberry Pi

Is it possible to run python 3.4 on a Raspberry Pi? Currently I have python 3.2, but the odd thing is that running sudo apt-get update sudo apt-get install python3 results in my Raspberry Pi ...
0
votes
2answers
56 views

Raspberry Pi as NAS

I was just wondering: Can I use my Raspberry Pi Model B as a Network Attached Storage? My plan is to have a wired connection from my router to the Pi, and a 2TB Exfat formatted drive attached to it. ...
0
votes
1answer
36 views

Unlock 512 MB Ram Model B

I want to unlock the 512 MB RAM on my Raspberry PI. I have RASPMBC installed and followed http://hubcitylabs.org/unlocking-your-new-raspberry-pis-512mb-of-memory/ But it isnt working, I get error ...
0
votes
0answers
7 views

decoding DPL2 with an external audio card

Is it possible to use the Raspberry Pi to decode external Dolby Pro Logic II 5.1 audio streams (coming from a videogame console) using one of these external audio cards: ...
0
votes
0answers
23 views

After building my own kernel I cannot load any module

Story of my life I built my kernel according to: http://elinux.org/RPi_Kernel_Compilation. I was able to boot my 3.14 kernel image. However when I want to insert rt2800usb I get the errors listed ...
2
votes
2answers
43 views

Using the Raspberry Pi Cam at 110 degrees Celsius

A CCD camera is required to be placed in a hot environment of up to 120 deg Celsius. I am thinking of using the Raspberry Pi Camera Module which I already have. However I am unable to find any specs ...
1
vote
1answer
28 views

Auto-Execute a program on power up

So, I put my Pi on a custom quadcopter. I have a program that will track an object with a cam and send out pulse widths to control my motors. Any way, right now I have to ssh into my Pi to run my ...
0
votes
3answers
30 views

How to solve a IndexError in python? [on hold]

I am working in python based in a java code. I have this in Java: public static byte[] datosOEM = new byte[900000]; public static byte x1=0,x2=0,x3=0,x4=0,x5=0,x6=0; I wrote this in python ...
1
vote
1answer
41 views

Used-to-be-working Pi does not boot, shows no lights, gets pretty hot

I have a Pi running a super-stock Raspian installed with NOOBS (If I remember correctly). Yesterday, it was working fine. I stopped using it for a bit to debug some other parts of the project this Pi ...
0
votes
1answer
33 views

Raspberry to power on Arduino

Ok this may seems a little bit strange question. For my personal educational purpose only I've built the following: there are 2 sensors (one digital, the other analogic) connected to an Arduino Uno ...
0
votes
0answers
16 views

Using FBTFT framebuffer efficiently

I'm using FBTFT with a tm022hdh26 TFT display connected to my RPi. It is working fine when writing a full screen of 240x320 pixels at a time using C# and Mono: const int width = 240; ...
0
votes
1answer
33 views

How does Raspbian depend on Python2.x?

I've written a Python3.x code on a PC (win 7) in order to read out temperature data from an external measurement unit (using basically pyserial & Matplotlib). I want to port this program on a ...
1
vote
1answer
25 views

Load Balancer vs. Master Node

I have been doing some research in building a Raspberry Pi cluster, and I have found 2 main approaches to the cluster configuration. The first I found, such as this report from the University of ...
1
vote
1answer
19 views

Using 'Network Manager' for Wireless & VPN Management

I am new to RP & have been searching for 24 hours for this. I have a 'ThePiHut' USB wifi dongle. It seemed to install its own drivers when I plugged it in and I used the wpa_gui to successfully ...
0
votes
0answers
14 views

RaspBMC black screen

I installed RaspBMC from a compatible SDCard and I got a black screen shortly after I saw the logo. After searching online, I realized that it might have been an HDMI problem so I went in the config ...
0
votes
0answers
6 views

EOF error when running pifacedigital-scratch-handler

I get this weird error when I am trying to run as per the instructions on this repo https://github.com/piface/pifacedigital-scratch-handler/blob/master/README.md pi@raspberrypi ~ $ ...
0
votes
0answers
23 views

from Java into python

Someone can help me with this: Anyone who knows how I must change this lines from java code into pygame (python) code. public static int response, DatoInt; public static boolean ...
1
vote
1answer
14 views

Safest way to shutdown my media center

What is the safest way to close my raspberry pi media center? Can I simply unplug it or are there big risks of getting corrupted data on my SD card.
0
votes
0answers
16 views

XBMC Performance

I want to transform my PI into a media center with XBMC. Should I use an SD class 10 card or a USB stick to get the best performance out of it?
0
votes
1answer
11 views

Where can I find a USB serial driver for Snow Leopard?

A while ago I followed this Adafruit tutorial on how to set up a serial connection with the Console Cable. Now I need to reinstall the driver (because I reinstalled Snow Leopard on my computer, erased ...
0
votes
1answer
22 views

How to get the temperatur of 2 sensors in java, using an extension board?

There are several questions about getting the temperature but non of them covers a solution for java. I want to build al little weather station in java to gett temp values, unfortunatly i am not that ...
0
votes
0answers
12 views

How to record sound in buffer using ALSA

I'm begining to learn linux and ALSA and I was wondering if there is a way to store the sound I record from a microphone a directly to the buffer. I read here ...
0
votes
1answer
29 views

Installing Raspbian from NOOBS without display

I am trying to install Raspbian from NOOBS, but I have no other screen/keyboard available than my laptop screen/keyboard. I find enough information about using a laptop screen/keyboard for a Pi, but ...
0
votes
1answer
12 views

How can I kill pre-up shell in order to login?

I add "pre-up bash /something/ipadd.sh" to interfaces, but this .sh file never stop. I push Ctrl+C, ESC, but no success. How can I skip/kill/pause this pre-up script, and login to the consle ...
0
votes
0answers
18 views

No Screens Found Error

I am trying to get my AOC e1649Fwu USB monitor to work on my Raspberry Pi. I was following this tutorial, and got through all of the steps except building raspberry kernel image. It was discussed ...
1
vote
1answer
43 views

Would overclocking a raspberry pi to “Medium” be dangerous to the Pi?

I am new to overclocking and just bought a Raspberry Pi to learn more about computers and run a Java server on. I was wondering: Would overclocking my Raspberry Pi to the "Medium" setting be ...
1
vote
1answer
50 views

/etc/network/interfaces file keeps changing itself - breaking wifi connectivity

After trying to set up a static IP address by changing the etc/network/interfaces file and having it break connectivity following that, I decided to just set it back to default. I followed this post ...
0
votes
0answers
23 views

My sd-card crashed after a reboot, how can I fix it?

I bought my SD-card in December last year (3 months of usage). And after an update and reboot it didn't start again. All I get when I try to log in via ssh is input/output error. I was running a ...
2
votes
2answers
29 views

access services over internet not working(anymore)

Cant access over internet? I recently managed to get the pi working so i could access services over the internet. i.e <external-ip>:8088 was working fine yesterday. I had trouble getting this ...
1
vote
1answer
53 views

Control GPIO from outside home network

I'm not exactly the most knowledgeable on the server-side aspects of how this kind of thing should/would work, but I do tend to pick things up pretty quickly. I've played around with WebIOPi and a ...
0
votes
0answers
16 views

Why does Java for ARM6/7 not have Java Web Start (javaw/javaws)?

Oraces Java 8 and Java 7 for ARM 6/7(Raspberry Pi) does not contain to javaw or javaws to run jnlp Java Web-Start files. I think also the OpenJDK are missing them. Why is this so? what can I do to run ...

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