0
votes
1answer
2 views

Why is there a difference in USB HDD speed in my two Raspberry Pis?

Summary USB drives connected to the rev2 running Raspbmc read/write twice as quickly as the rev1 running Raspbian. Why is there a difference in speed? Testing I tested the same external USB hard ...
0
votes
2answers
15 views

Using a Generic Switching Power Supply

I have a generic 5V 10A switching power supply with screw terminals, that looks kind-of like this: Is it safe to use the output from here to drive the Pi by cutting a USB cable and connecting the ...
0
votes
1answer
27 views

wifi dongle not working

I have followed numerous tutorials to get my wifi dongle working on my raspberry pi, and when i use this command: iwconfig I get what almost all the tutorials show me, but i still can't get to ...
0
votes
1answer
17 views

encryption of database

Is there some way to encrypt only the Mysql Database and the public_html folder of a lamp installation ? after reading a bit online it looks like encrypting the whole filesystem will slow down the ...
1
vote
1answer
11 views

PIC Microcontroller to Raspberry Pi Communication

I am designing a smart energy monitoring system as my FYP, I have used two pic18f452 microcontrollers to monitor the electric parameters and they are doing it successfully. now to make it more user ...
0
votes
0answers
11 views

Wolfson audio card not working after rpi-update

Just used rpi-update to update the Pi and things went bad. Previously, was using the base Raspbian image with Wolfson drivers and that worked well. Suddenly, nothing. Alsamixer doesn't show anything. ...
0
votes
2answers
35 views

Is there an alternative for Pi with dual ethernets?

I need to use two ethernet for gw like target. Is there an alternative for Pi with dual ethernets? 100 or 1000 will be ok. Regards,
0
votes
2answers
22 views

Need help on my REST API

I would like to seek help on my LED REST API. I have finished constructed my basic REST API for my Raspberry PI. What I'm trying to do now is allow my LED to light up whenever I key localhost:3030/7/1 ...
0
votes
1answer
19 views

PI4J: Multi-threading when listening to Pin Interrupt events

Currently I'm working on a application for my RPi which will be monitoring a set of GPIOs in real-time where the exact time when the GPIO turns HIGH is crucial for my application. The actual date is ...
0
votes
0answers
25 views

Preventing SD card corruption in the event of power failure

I have a project that uses Pi's in remote locations (roadside cabinets dotted around a city next to important bits of water infrastructure) to read data via USB from some specialised data collection ...
0
votes
0answers
10 views

tkinter issue no display name and no $DISPLAY environment variable

Trying to run a bash script on reboot which in turn runs my Python script using tKinter for creating a gui. If I run the bash script directly via LXTerminal it works properly. My gui is created. But ...
1
vote
2answers
26 views

Mult-head micro-usb cable

I am building a raspberry pi cluster. I am looking for a multi-head micro-usb power cable to power them. Does such a beast exist? Or can I make one myself?
0
votes
0answers
15 views

Home Automation and Dimming

This is a sort of continuation of a previous question I asked. I want to switch lights on and off, amongst other things with several raspberry pi's in my house. I've got this functioning and working ...
0
votes
0answers
4 views

How to list all DLNA media from the command line

I am using minidlna to share media on my LAN from a Raspberry Pi to my smart TV. Sometimes I would like to check that everything is ok from a remote computer via ssh. Unfortunately, I could not find ...
0
votes
0answers
11 views

same problem, camera rpi not works ENOSPC

i have raspberry pi Type B and i am trying to attach camera into it, all i have done is upgrading dist and firmware sudo apt-get update sudo apt-get dist-upgrade sudo rpi-update all firmware is ...
0
votes
0answers
24 views

How come my other pins of LED never light up for my LED REST API?

I would like to seek help on my LED REST API. My issue is my other 2 LED never light up when I execute GET and PUT method for it. I have 3 LED - Red, Blue and Green but whenever I node my LED REST API ...
1
vote
1answer
17 views

Wi-Fi on a network with SSID Broadcast disabled

I bought a new Raspberry Pi B+ and a Wi-Pi Wireless Adapter. The Wi-Pi appears to be a Ralink Technology, Corp. RT5370 Wireless Adapter. I am can get the Wi-Pi running on a network with SSID ...
0
votes
0answers
4 views

Qt App cannot load shared library for libicudata but it does exist on the file system

Everything seems to be in place - please see the following information. For some reason the library is not found! I would really appreciate some help as to why this is. The test app is a Qt app, and ...
0
votes
0answers
20 views

Jasper Problems

I trying to run the Jasper Platform which is an open source platform for voice-controlled applications. It enables anyone with a Raspberry Pi to create always on, Siri-like applications with just a ...
0
votes
1answer
32 views

Delay running of python script on boot until desktop is finished

I tried simply editing the autostart file to run a Python script on boot, but it runs with errors, I assume becasue the desktop hasn't completed. Can someone tell me how I would launch a script with a ...
0
votes
0answers
9 views

Checking if i2C connection has dropped

Have a RPi connected to an arduino via i2C. Every once in a while I lose my i2c bus connection.Does anyone know of a way to automatically checked for a dropped bus via software? I might configure ...
1
vote
1answer
18 views

USB modem not switching from mass storage to modem mode

I have ZTE MF669 USB modem. root@raspberrypi:/home/pi# lsusb Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 ...
1
vote
0answers
33 views

Adafruit 16x2 RGB LCD scrolling down?

So I'm working on a little project to show a fortune on this 16x2 LCD. I've been successful so far, but when it came to longer fortunes, it would just cut off. How would I go about scrolling downwards ...
0
votes
0answers
22 views

dhcpd after reboot (Arch Linux)

I'm trying to setup DHCP server on Raspberry Pi on Arch Linux, but I'm having small problems starting it properly after boot. My dhcpd.conf is: authoritative; ddns-update-style standard; ...
1
vote
1answer
15 views

Boots only when USB key connected (fstab related)

I have the following problem on ArchLinux system. My raspberry Pi won't boot unless I have my USB stick connected. I've been doing some tests and I discovered it is fstab related. When I comment the ...
1
vote
0answers
7 views

pcm512x module problem, blacklisting it doesn't help

I keep having the following message during boot, reboot and I see in dmesg log. pcm512x 1-004c: Failed to reset device: -5 I'm on the ArchLinux ARM. I've been googling, found this, unfortunately ...
1
vote
1answer
14 views

Mount NFS Folder share on RPi from a synology NAS

I would like to mount a NFS folder share from my Synology NAS on my RPi. So far, all my efforts have been unsucessful. I get stuck on : pi@raspberrypi ~ $ sudo mount -t nfs ...
0
votes
1answer
13 views

MCP3204 ADC with low sampling rate << 100kSps

I'm trying to read light value from an LED bilking very fast. So I choose TSL12S as a light sensor, and MCP3204 as an ADC. In datasheet, MCP3204 have sampling rate up to 100 kSps when Vdd = 5 V is ...
0
votes
1answer
23 views

Disabling DHCP Server

For some strange reason, my Raspberry Pi is acting as the DHCP server on my home network. Whenever a computer boots up in our house, it's immediately told that the IP address for the DHCP server is ...
0
votes
0answers
23 views

How to build a simple LED RESTful service in Raspberry PI?

I would like to seek advise or help on how to build a simple LED RESTful service in Raspberry PI. I need to be able to get my LED to light up or off whenever I type localhost:3000/GET/1/1 or ...
0
votes
1answer
32 views

Why can't I remove Apache?

I installed a LAMP stack with the following commands: $sudo apt-get install apache2 php5 libapache2-mod-php5 $sudo service apache2 restart $sudo apt-get install mysql-server mysql-client php5-mysql ...
0
votes
0answers
13 views

Can´t get WebSocket “Tornado” to work!

I'am new to this community, so there it goes. So i have a raspberry Pi, and i want to create a web application so i could interact with GPIO over any device. I choose Tornado web socket for the ...
0
votes
0answers
22 views
+50

How can I get Raspivid to skip h264 encoding? (getting rid of 5 second latency streaming video)

There are gazillions of forums and threads about getting rid of a 5 second latency when using a Pi together with a PI-Cam as a surveillance camera. Many tutorials show how to use vlc to encode and ...
0
votes
0answers
5 views

tsl235 and the RPi

I'm trying to get the tsl235 (https://www.sparkfun.com/products/9768) working with the PI and the bcm2835 library (or without it, just using a simpler mmio) and while the operation of the tsl235 ...
1
vote
1answer
35 views

Camera module “crashes” Raspberry Pi

Crashes in quotes because I'm not really sure that you can call it a crash. I don't know how to figure out what exactly is happening. The Problem I've been trying to get my camera to work properly ...
0
votes
0answers
3 views

installing pygame.mixer

so i've been looking for a few hours now on how to install pygame mixer. I have pygames installed already. Im not sure if I have to download it apart of pygames or if it comes pre-installed.
0
votes
0answers
35 views

ssh: connect to host … port 22: Connection refused

I have dnsmasq configured on a DNS/DHCP server, which is set up so that the domain name mycompany.com is automatically appended to the hostname of each device connected over DHCP. e.g. the computer ...
0
votes
1answer
22 views

'Safe' temperatures for use

So I need to measure the temperature in my conservatory, and with all the doors shut on a summer's day it gets pretty toasty (uncomfortable for more than a few seconds). My question is what sort of ...
0
votes
2answers
37 views

SSH slow to ask for password

There is a similar question about slow logins here, but I believe my issue is different. Read on... I usually use my Pi headless, SSHing in from my Macbook over WiFi. When I do, it usually takes ...
0
votes
0answers
11 views

Is it possible to implement a loader bar rather than the linux boot screen

I've found tutorials on booting to a to an image or movie, but I'm wondering if anyone knows how to create a loading bar, something similar to the way a mac behaves when you boot it up.
0
votes
0answers
3 views

How do I test the internet connection on OpenELEC, besides restarting?

I just set up OpenELEC, and the first task was to set up the WLAN. I entered the data (gateway, SSID, etc) and it did not work. I spent at least 45 minutes changing different parameters, googling, ...
0
votes
0answers
7 views

controlling non addressable Led-strips using the SPI

For a project,I need to control RGB lightstrips by DMX and I want to use only 3(RGB) DMX channels.It seems logical to use non addressable lightstrips,for that seems to be the cheapest method (I need ...
-1
votes
0answers
14 views

Using custom classes in C++

I'm trying to write a basic weather monitoring station for the Pi in C++, I've got 2 sensors written as classes and I'm trying to do a basic program to implement these classes and test that they ...
2
votes
1answer
48 views

How can I get the same USB HDD speeds in Rasbpian as in Raspbmc?

Summary USB drives connected to the Raspbmc read/write twice as quick as the Raspbian. How can I make the Raspbian as quick as the Raspbmc? Testing I tested the same external USB hard drive ...
0
votes
1answer
56 views

Can the new raspberry pi B+ act as a usb sniffer?

I am trying to capture data from a computer going to a USB peripheral. I think the previous raspberry pi (model B) couldn't do this because it could not act a USB slave. But can the new raspberry pi ...
0
votes
0answers
13 views

Realtime patch for Raspbian?

I want to usleep() and nanosleep() to work more properly and nicely on Raspbian. Actually, I use Python and usleep() can be done by time.sleep(sec/1000000) I found some solutions for RT Linux by ...
0
votes
0answers
17 views

AP with tl-wn725n v2

I tried to set up an AP with the tl-wn725n v2 wifi dongle on my raspberry pi via instructions from the forums and some sites but ended up failing. Is there a way to set one up or is it not AP ...
-1
votes
0answers
24 views

What's the fastest & best supported USB Wifi Chipset?

I need a USB Wifi chipset that is 100% plug and play. No messing around with drivers. Also fast. I'd like to get 300Mbps (like the Realtek RTL8192CU). From what I've read, the Atheros AR9271 chipset ...
1
vote
1answer
28 views

Configure a Raspberry Pi for wifi from an access point by USB wifi dongle

I'd like to be able to configure a Raspberry Pi to work as a wifi access point that loads an interface where users can choose the WiFi network to connect to. I've read the guides on how to make an ...
1
vote
0answers
18 views

How to avoid page with properties when printing?

I integrated my USB printer (OKI B430) into my network using a Raspberry Pi. Sometimes I get an additional page at the end of a print job. I usually print PDF documents using the Acrobat Reader 11 ...

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