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1answer
895 views

Re- Wire a DAC for newer GPIO pin layout

I have a Hifiberry DAC for a model B and would like to use it on b+ or pi 2. I know the GPIO pins have changed from model B layout - would it be possible to figure out the old and new layout ...
4
votes
2answers
8k views

Creating an Android “remote” app for Raspberry Pi (Raspbian)

Similar to how you can control XBMC/Kodi/Raspbmc through the Android app "Yatse XBMC/Kodi Remote Control". Can anyone confirm whether either a.) there is something out there for Raspbian, or b.) if ...
74
votes
7answers
103k views

Upgrade to Raspbian Jessie

How can I perform an upgrade from Raspbian Wheezy to Jessie?
0
votes
2answers
6k views

Update using apt-get failed: “Connection timed out”

I want to update my Raspberry Pi, but I was not successful. This is the message when I try to update my device: > pi@raspberrypi ~ $ sudo apt-get update Errhttp://mirrordirector.raspbian.org ...
0
votes
1answer
490 views

Problem with Crosscompiling (std, string) for RaspberryPi from Ubuntu

I'm using Ubuntu and arm-none-eabi to crosscompile some baremetal programs for the Raspberry Pi, my problem now is, that this: char ch[32]; const char doubleout[] = "double received: "; std::...
2
votes
0answers
627 views

gstreamer 1.4.5 slow on pi

I have arch installed on my pi and gstreamer1.45 installed. Any pipeline I try, playback is unbearably slow. I get maybe 1 frame every couple of seconds. Am I missing a driver or something? I dont ...
0
votes
1answer
2k views

Special PWM files are not found on Raspberry Pi 2

I just got my Raspberry Pi 2 B (V1.1) and wanted to fool around with the Sunfounder starter kit a bit. The "sunfounder kit" is a learning kit with a couple of electronic elements (bread-board, ...
3
votes
1answer
1k views

Snappy Ubuntu Core In Debain Qemu

Is there a way to emulate the Snappy Ubuntu Core image in Qemu under Debian now that it has an arm cortex a-7 chip on it? I tried following this wiki and installed virt-manager to set things up but I ...
2
votes
1answer
4k views

Getting a 1.44" TFT ILI9163C screen to work with SPI

I am working on getting my very very very cheap chines display working. As far as I can tell, its a TFT 1.44" 128x128 SPI display (printed on the board) - and the internet seems to direct me towards ...
2
votes
1answer
1k views

Write floats to gpio

I want to control an LED Strip via the gpio PIns of my Raspberry pi 2. I found some ways for example using Python or WiringPi. But I need to use "non absolute values" like "put Pin 0 to 0.2 and Pin 2 ...
3
votes
1answer
378 views

System writeprotected all the sudden

I've had Raspberry Pi running few years Arch Linux ARM 24/7. All the sudden there seems to be inability to write anything, can't create new files nor edit anything, even as root. Same applies to any ...
0
votes
1answer
318 views

Pi not reading file using Bash script on startup

I made a bash script to open a certain webpage after my Pi 2 has booted. To do so, I use Bash to read a file on my system containing an ID, and append it to an existing URL. This full URL then gets ...
3
votes
1answer
244 views

Garden Automation

I am about to change my garden automation project and was wondering if anyone had experience using this rayshobby.net - OpenSprinkler? Or does anyone have other good approaches for an garden ...
0
votes
1answer
46 views

How to use apache to reach pen drives [closed]

I want to use apache to host the files of my two pen drives but also from a folder inside /home/pi. I can set the root directory of apache to /home/pi but what about the pen drives? Don't wanna set ...
0
votes
1answer
796 views

TLC5947 with a Raspberry Pi

I have been trying to get 8 RGB leds to work with a TLC5947 driver using a Raspberry Pi. But I am not able to get the leds to work. I have tried with the help of fpulse from Wrobbel. But this did not ...
5
votes
2answers
1k views

rpi 2: Unable to change irq affinity

I am trying to optimise getting GPIO interrupts into userspace. On the single core rpi 1 I couldn't get rid of quite some timing jitter, which makes sense as there's a lot of stuff going on on the cpu....
3
votes
1answer
3k views

Minimal RAM requirement for raspbian os

We are evaluating a scenario where we want to run raspbian os on minimal possible memory. I am fine with custom building it. Can someone throw some light on this?
0
votes
0answers
52 views

Using gpio-admin errors: no such file or directory [duplicate]

I'm trying to make a NodeJS app control gpio on my new Pi 2, I'm using the pi-gpio node module (https://www.npmjs.com/package/pi-gpio) and followed the instructions to the letter, not only logging out ...
4
votes
3answers
6k views

Command apt-get upgrade crashes Raspbian

The image file I am using is quite old. How old exactly I am not sure, because this image I have inherited from previous developer. I have learnt that running: sudo apt-get update sudo apt-get ...
2
votes
1answer
141 views

Should I provide additional parameters for make on Raspberry Pi2?

I was wondering if make would need extra parameters to make use of the 4 core A7 on the Raspberry Pi 2? I have read that you can specify make -j# at a rate of cores x 1.5 to run parallel jobs within ...
0
votes
3answers
1k views

How can I access to /etc/network/interfaces in my sd card?

I messed up info in /etc/network/interfaces , but I couldn't find it when I read sd card in my mac. How can I access to this folder ?
2
votes
1answer
978 views

Sharing a DS40 Printer with CUPS

I am trying to set up a DS40 as a shared printer on a Raspberry Pi using CUPS. I have Raspbian and CUPS installed. I tried setting up the printer with the CUPS drivers included for this make/model, ...
0
votes
1answer
718 views

Playing YouTube videos on slow internet connection

I'm using Raspberry Pi B+ model with XBMC (KODI) operating system. I'm running on slow internet connection hence cannot stream 720p videos and buffering takes more time than playing the video. Is ...
12
votes
1answer
42k views

What is the default cmdline.txt?

My Raspbian Pi crashes to a Kernel panic when I start it up, and it suggested somewhere that an invalid cmdline.txt can cause this. What is in the cmdline.txt by default?
2
votes
1answer
3k views

Cannot ping localhost

While setting up an ntp client/server, I found a weird error where the client cannot check it's own time. I have traced this back to the fact that all of these commands time out: ping localhost ping ...
0
votes
0answers
59 views

Time is most important thing in my project [duplicate]

I work on a project that date and time is very important. I want force raspberry to sync time with a ntp server and if time not sync raspberry won't boot or wait for time sync and after succeed ...
0
votes
1answer
302 views

Errors installing XWiiMote

I am having trouble compiling/installing XWiiMote. When i run either configure or autogen.sh, it complains about not finding ncurses: ~/xwiimote $ sudo ./autogen.sh ... checking for NCURSES... no ...
2
votes
1answer
197 views

Detecting if speaker is active

Pre-story: there's an analogue speaker connected to some circuit (wireless doorbell really). I want to figure when speaker becomes active (i.e. produces some sound). Basic measurements show there's +...
4
votes
2answers
184 views

Raspberry Pi failing to read sensors in -20 degree F

I am currently developing a sensor box and plan on running it outside. Temperatures can get as low as -40 degrees F and once my box reaches an internal temperature of 32.18 degrees F it fails to read ...
1
vote
1answer
300 views

problem with LED matrix setup with raspberry pi model B+

I have a raspberry pi model B+ , and an 8x8 LED matrix(single colored) , so I connected 8 GPIO pins to the 8 row pins of the matrix and another 8 GPIO pins to the 8 colomn pins. Note that I am pretty ...
1
vote
1answer
1k views

Cannot execute binary file from USB drive

I wrote a small program in C, that compiles without errors or warnings. Testing the program on other systems worked perfectly. I was a little surprised then to see that I could not execute it on my ...
4
votes
1answer
47k views

Raspberry pi 2 has a unified RCA and audio jack. What cable should i use to connect to an analog TV? [duplicate]

A 3.5 mm Male to an RCA Composite 3-pin cable was suggested, but i've read that this sort of cable needs modifications to work with the Raspberry Pi 2. Can anyone please give me a detailed description ...
0
votes
2answers
4k views

read a RFID card MiFare 1k classic through a PN532 uart reader with serial.read()

I'm trying to read my rfid card MiFare 1k classic with a PN532 breakout board through UART with a simple python script. I installed libnfc, the nfc-poll example program reads my card perfectly fine. I ...
1
vote
1answer
439 views

Which is best for Raspbian, 'udev' or 'mdev'?

I'm trying to detect when a mass storage USB device been inserted to my Pi. If it's a USB mass storage device(a pendrive), I want to transfer files from Pi to the pendrive and unmount automatically ...
0
votes
1answer
727 views

Kivy, KivyPie and PiTFT [closed]

I am developing application which must be very user-friendly. For fast prototyping, I made application via wxPython but it's appearance was not that good. So I decided to change my tool and Kivy ...
0
votes
1answer
326 views

VPN on RASPBMC on Raspberry Pi

I am trying to set up a VPN on a Raspberry Pi to connect to VPNBOOK.com This is proving to be quite problematic. All the guides i have seen online are about setting the Pi up as a VPN Server, i do ...
4
votes
3answers
11k views

DS18B20 temperature sensor not registered - debugging?

Like other posters I have connected the temperature sensor (from ModMyPi Hacker Kit) a variety of ways and can not get my Raspberry Pi 2 to recognise it. I have unsuccessfully followed posts to ...
0
votes
2answers
13k views

Raspberry Pi Apache Server .htaccess

I am running an Apache server on my Raspberry Pi with PHP, and I want to create a .htaccess file to redirect 404 errors and remove .html extensions on URLs. I have tried simply running 'sudo nano ....
1
vote
0answers
5k views

H264 IP camera stream by Raspberry Pi 2 with OpenCV and GStreamer: Gstreamer unable to start pipeline

I'm trying to get working OpenCV with GStreamer to get IP camera rtsp stream. But it is giving error which is (with opencv-master branch, Gstreamer 1.2.4, Raspbian 3.18.7-v7+: GStreamer Plugin: ...
5
votes
2answers
3k views

Simulate GPIO pins

I would like to do some simulation of the Raspberry's GPIO pins, e.g. for automated testing and developing the scripts on another host that is not the RPi. Are there any existing tools/scripts(...
1
vote
1answer
700 views

extend the current for PWM LED Control

i am using the raspberrypi to have 2 led's fade up and off. My script works and its ready to go. But i need to get my LED's brighter. Is there a way to extend the GPIO Current of the rasperry pi ? ...
4
votes
3answers
31k views

unable to open video device and grey screen

I'm having problems with Motion's live stream going grey and saying unable to open video device. I can get my live stream working by rebooting my PI and, following a reboot, entering the command sudo ...
2
votes
1answer
4k views

PiTFT doesnot work after rpi-update

I updated the firmware with command : sudo REPO_URI=https://github.com/notro/rpi-firmware rpi-update This install the kernel 3.18.5+ After reboot, the PiTFT is no more showing console as before (...
3
votes
2answers
1k views

Powering several LEDs from GPIO output

I'm currently working on a "rotating cube" project where a raspberry pi will be used to determine which cube face is at the top and any given time using an accelerometer and light it up with LEDs. So,...
1
vote
0answers
33 views

How to install Windows X on Raspberry Pi 2? [duplicate]

Windows Developer Program for IoT has announced that they will support, and supply a FREE version of Windows X on the Raspberry PI 2. Has anybody had any beta versions running on the Pi 2 and is it ...
1
vote
1answer
2k views

Raspberry Pi 2 refusing to boot after first few reboots

Step 1: Put latest Raspbian image (2015-01-31-raspbian.img) on compatible (according to http://elinux.org/RPi_SD_cards) Micro SD card Step 2: Boot Raspberry Pi, ssh into it, expand filesystem, reboot ...
1
vote
1answer
691 views

How to compile Zoneminder source files

I'm trying to make a video surveillance system with my Raspberry Pi (running raspbian) using Zoneminder. Default action of Zoneminder is only to send an e-mail but I want also to run a script which ...
3
votes
3answers
848 views

Is the Docker framework planned for Snappy Ubuntu Core on the Pi 2?

I can boot and run Snappy Ubuntu Core on the Pi 2, but there are very few apps and frameworks currently available for the ARM version of Snappy. This wouldn't be a major problem if the Docker ...
5
votes
5answers
23k views

How to install Waveshare SpotPear 4 inch LCD in RaspberryPI 2?

I've bought 4inch IPS LCD from WaveShare but cannot get it run on newest Raspberry PI 2. The original DVD comes with image which isn't compatible with RPI 2. Tried to follow this manual but without ...
1
vote
0answers
173 views

External HDD not always detected

It is detected perfectly fine on my Mac. It is self-powered an I hear it spin when I plug it in the Pi. Sometimes when I boot it shows when I run lsusb, sometimes it doesn't. If I unplug it and try ...

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