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1answer
6k views

Problem with PWM, running DC motor using L298 H bridge(using RPi.GPIO python module)

This picture shows the code i am using to run back and forth a dc motor for specified time and it works well, no problem with this.! Problem is here, as soon as i switch on my Pi and try to run the ...
2
votes
2answers
1k views

Not able to connect to the network on Raspberry Pi

I have got a new Raspberry Pi, and I am eager to work on it, but I am not able to connect to the network from it. I connect to the Raspberry Pi using SSH. When I try doing the apt-get update apt-get ...
0
votes
1answer
635 views

How to backup RPI when file directory is on USB device

Because I'm running a server, I moved my Pi's file directory to a USB device using this tutorial, which means that I'm booting from an SD card, but all of the stuff I need is in a USB drive. How can ...
30
votes
2answers
63k views

How to get Wi-Fi to connect on boot?

Raspberry Pi Model B OS: Raspbian I am running my Pi headless (currently through a direct Ethernet connection). I have a USB WiFi dongle. I would like to have the WiFi start up at boot and connect ...
4
votes
3answers
9k views

How to communicate with Pi through a tablet/phone (Android) in a no-internet environment

I've started to make a web app that's used to communicate with the Pi (access through local ip). The Pi is used as an automate machine. It launch/control motors depending on sensors, etc. I can work ...
3
votes
2answers
684 views

Robust power supply, powerdown and industry housing

We like to use the rpi for an industry application (process monitoring). Our requirements are: power supply from 24-48 volt powerdown mechanism to protect data from an outage (safe automatic ...
0
votes
1answer
677 views

How to sort out display on Raspberry Pi?

I am running Raspbian on my raspberry pi, and have it plugged in to a vga display via a converter. The display is way to zoomed in, and I wondered how to fix that. When I run /opt/vc/bin/tvservice -s ...
0
votes
1answer
1k views

Python requests sometimes fails with Errno -2

I'm writing a scraper which runs perfectly on my Ubunutu 13.04 based laptop, however when running it on my RaspBMC based pi it throws the error below. Sometimes straight away, sometimes after running/...
1
vote
1answer
626 views

Arch Linux Encrypt entire drive

My Pi is set up as a PHP MySQL (Percona) server and I think that I have managed to make it quite resilient against online attacks but it is still very vulnerable against someone just taking out the SD ...
1
vote
1answer
3k views

Phantom JS On the Pi

I'm trying to install Phantom JS, but it is not in the official Raspbian repository. I've found two people who pre-built binaries for the Raspberry Pi here and here, but when I follow the instructions ...
0
votes
1answer
61 views

Changed permissions of /usr

Being the noob that I am, I seemed to have changed the permissions of /usr not knowing the consequence of that action. That's pretty much locked me out of my system, not allowing me to do anything. ...
0
votes
1answer
836 views

Apache2 Server not allowing computers on local network access

I just set up my first server, and I'm having some trouble getting it to work. I'm currently using shared connection between my desktop and raspberry pi, so I can communicate via SSH. However, if I ...
2
votes
4answers
9k views

Raspberry Pi to email when power outage occurs

Ok, my idea is for my raspberry pi to email me when the power goes out. Some things to note: the RPi is powered by battery backup, it will still be on when the power goes out. all of my network ...
0
votes
2answers
131 views

Speeding up translations in arrays

Hi I am looking for a way to speed up code execuation on the Pi in Python I have a list that is 200 items each with 8 values ( X value , Y Value , X ofset , Y of set , Angle , Step , X cord , Y Cord ...
0
votes
1answer
108 views

raspbian samba write issues

I followed this tutorial to install samba on my PI, but I can not write to the files? my smb.conf: #======================= Global Settings ======================= [global] workgroup = WORKGROUP ...
5
votes
4answers
2k views

512MB suddenly not recognizing USB or ethernet

I have a 512MB Model B (2012 edition I believe, possibly 2011...china made) and recently my power cord was partitally chewed through. Obviously, the Pi wouldn't boot up, as I noticed when I tried to ...
3
votes
2answers
4k views

Connecting a micro pump to Raspberry Pi

I am looking to get this micro pump. I was wondering what else I would need in order to run this from my raspberry pi? Do I need a relay and/or an additional power source. What all is needed to drive ...
1
vote
1answer
782 views

Installing kernel 3.10.24 headers on raspbmc

I'm trying to build drivers for my wifi dongle (a LogiLink WL0084B), but for that I need to download kernel headers for my current kernel (3.10.24). I'm using raspbmc. Sadly I cannot find where to ...
1
vote
1answer
1k views

Cannot connect to RasPi using static IP

I am having issues connecting remotely (i.e using my static IP address) to my Raspberry Pi's SSH and HTTP (nginx) servers. Al though it seems to be having trouble with any outbound traffic. My PC and ...
2
votes
1answer
3k views

Webcam pictures too bright (with bright bar on top)

Im using a Microsoft LifeCam HD-3000 and when trying to take pictures with both fswebcam and mplayer the pictures are too bright and/or have a bright bar on the top quarter of the image. When ...
0
votes
1answer
102 views

eth0 launched but can't connect on router + segmentation failure / Illegal instruction everywhere

i'm deep into a mess here. The pi was running fine for several days, (just for history) tried to install manually npm and node.js from git, made a make install , and I got warnings/issues. Humm.. ...
3
votes
3answers
748 views

Possible to program an attiny2313 from gpio

I'm looking at the possibility of using an attiny2313 as a very simple controller chip, and I've used avrdude before with a parallel port to program one of these. Now I don't have a parallel port, ...
0
votes
0answers
47 views

is there a way to connect pin to shutdown [duplicate]

There is the little trick of connecting pin 5-6 to load in recovery mode. Is there an equivalent trick I missed to shutdown properly the pi using only a jumper ? There is also the p6 connector, is ...
2
votes
0answers
4k views

Raspberry PI WiFi Direct

I am trying to implement WiFi Direct using raspberry pi and Samsung Galaxy I9300. The raspberry pi of model B is running 3.9.11 kernel with raspbian wheezy image (2013-12-20-wheezy-raspbian.img) and ...
3
votes
1answer
988 views

Unable to drag and drop widgets in Qt Designer

I got a Qt 4 installation using sudo apt-get install qtcreator. I am able to get everything to compile using gcc 4.8. However, when it comes to using Qt Designer to edit the UI of a window, Qt ...
0
votes
1answer
880 views

Apache2 on Raspberry Pi: 403 Forbidden after changing web root/chown not working

So I'm pretty new to servers; I've been running websites off of 3rd party hosts, but I thought I might like to try it on my own for once. I got a Raspberry Pi running Raspian Wheezy, and I ...
2
votes
1answer
4k views

FUSE installation on Raspbian

I'm installing flickrfs in my raspbian. But it requeries FUSE to be install. I have already do: sudo apt-get install libfuse2 fuse-utils python-fuse imagemagick sudo apt-get install fuse sudo ...
1
vote
1answer
81 views

RPi mouse frequent timeout?

Mouse frequently "times out" and is non-functional for a period of time from a few seconds to indefinitely (requiring reboot). Generally happens during a burst of high CPU activity and mouse is ...
4
votes
2answers
5k views

No Audio Output on 3.5mm Jack

I have a Raspberry Pi B running Arch ARM. I have setup NFS with my media server. I'm trying to stream music from it and play it with mdp through ncmpcpp (with alsamixer). I have tried turning up the ...
0
votes
1answer
7k views

cat /sys/class/gpio/gpio17/value permission denied [get the gpio status via php]

I am trying to get the status of gpio17 via php like that: (Installed: Raspbian, Apache2, PHP5) This is what i do: echo "17" > /sys/class/gpio/export echo "out" > /sys/class/gpio/gpio17/...
2
votes
1answer
1k views

Wi-Pi High Latency

Model B, Raspbian, Wi-Pi vs Macbook Pro Setup Both devices are sitting right next to eachother Connected to the same router. traceroute is the same for both Even typing on the Pi via SSH feels ...
6
votes
3answers
7k views

What web servers can I install on the Raspberry Pi?

I'm considering using a bunch of Raspberry Pi's as low-cost distributed load balanced web servers. This is probably a terrible idea but I wanted to investigate it anyway. Could I install IIS or ...
2
votes
0answers
1k views

Why Do I See Artifacts When Viewing Video Using x264 Codec?

Firstly, I apologize for any semantic errors in the title with respect to x264. Also, yes I have tried to find other similar posts on this and other sites. I haven't been able to find any answers that ...
-1
votes
1answer
512 views

Limit 3g bandwidth usage with raspberry + mqtt [closed]

My setup is a simple raspberry with a 3g dongle shooting mqtt messages to a remote server. Each message takes less than 50bytes, messages are sent every 10 min which gives a daily network usage of ...
2
votes
4answers
4k views

Use RPi as a LIN Master to control slave nodes

I am trying to use the RPi as a LIN Master to communicate with a number of slave nodes on the LIN bus. I can send the correct bytes, starting with the sync byte of 0x55, and then the node ID, the ...
1
vote
1answer
218 views

Raspberry PI and TV output

Today I bought my Raspberry Pi and want to build an ambilight for my TV. I know how to do this and will get it to work.. however, what I would like to know is if I can somehow get the output from my ...
2
votes
1answer
293 views

How to connect mhz transmitter arduino

How am I supposed to connect a transmitter to my raspberry pi "pins"? I have bought a transmitter online But I have to wait about 10-15 days before its delivered, so I want to make sure that thats ...
1
vote
1answer
8k views

Controlling Multiple analog RGB 12V led strips

I need to control several (5 to 10) analog RGB strips which have a separate power supply at 12V or 24V. Just like this one for example. I need to control the intensity of each colour channel for each ...
0
votes
1answer
1k views

Install TL-WN725N in Raspbian [duplicate]

Im new user of python, raspbian and raspberry pi. I would like to install new wifi adapter into my raspberry. But unfortunately, I not really understand and there's no proper instruction to install ...
1
vote
0answers
334 views

Raspberry Pi as Intermediary USB device

I have a small project going where I am trying to capture signals from the raspberry pi usb input, record the signal captured via software, and output the signal to my pc after recording via another ...
16
votes
4answers
76k views

Connected to the Internet, but can't ssh or ping

I'm having a problem with my Raspberry Pi where I can't ssh into or even ping it, yet I'm using it on my TV, and it's clearly connected to the network/Internet. I've used the attached keyboard to run ...
0
votes
1answer
1k views

Problem trying to compile Logilink WL0084B drivers

I'm trying to setup my raspberry pi to be a multimedia center, using raspbmc. I've installed the OS to the card and configured it on the first boot. Currently I'm accessing it through wired ...
1
vote
3answers
1k views

7 Segment display too dim with BCD to 7-segment latch/decoder/driver

I'm using 4 GPIO pins of my Raspberry Pi Model B 512MB Rev2.0 Board, to drive a single 7 segment LED display (1", Common Cathode, no part number on item) through a BCD to 7-segment latch/decoder/...
3
votes
3answers
13k views

How can I edit a Raspbian SD card image to use a static IP address within Windows?

Before "burning" the Raspbian.img file to a SD card, I would like to edit it so the Pi uses a static IP address. (So I can run it in headless mode, without DHCP). I found some articles describing ...
1
vote
0answers
321 views

RPi Keyboard Issues

I'm having problems with my newly acquired RPi. I've tried multiple power units, settling for the USB Hub in my Dell monitor (a 1911b). eLinux.org states Dell monitors are fine for powering the ...
7
votes
2answers
16k views

Reading barcode with Raspberry Camera and zbar

I'm Trying to decode barcodes using Raspberry Camera-board and zbar tools. So far it has not worked since the image captured by the Camera is fuzzy: the barcode is either too close or too far to get ...
1
vote
2answers
9k views

Oracle Java could not find or load main class

I have a Raspberry Pi Type Bi with Oracle java installed. Previously I have been able to run java classes e.g. "java MemoryInfo" and the file would run. Now I want to include a separate library and ...
2
votes
4answers
21k views

How to force rescan of USB serial devices?

I have an arduino board (nano) connected to my Raspberry Pi via the USB port. If I boot the Raspbery Pi first then plugin my arduino it works fine , the arduino is recognised as "FTDI Serial" and ...
6
votes
2answers
14k views

Can I use the composite video connecor to send video INTO the Raspberry PI?

I am looking to convert video from an analogue surveillance camera (w. BNC connector) into a digital format using a Raspberry PI. I was wondering first if the composite video connector would allow me ...
0
votes
1answer
2k views

Installing driver in raspberry pi [closed]

i dont know how to do it. I try to install driver into raspbian. I was download it manually and extract it into a folder. But I don't know how to run the setup.exe. Anyone please help me. I try to ...

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