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370 views

SPI problem when install CAN controller driver

I updated my raspi to 3.18.7+ last days and i also need new driver for my modules. I was waiting for PICAN board driver for pi and yesterday i uploaded it. Before uploaded; ls -al /dev/spi* crw-rw---...
2
votes
1answer
238 views

Wifi disconnects when a new network adapter is activated

I have installed debian on a raspberry pi using berryboot. Berryboot is setup to copy wpa_supplicant config to main OS and enable wpa_supplicant on boot when the OS is first installed to my knowledge. ...
0
votes
2answers
2k views

Can't login via SSH after restart

After I restart, everything from the A/V output works fine, and I can login locally, but until I do, I can't seem to login via SSH. I can't get the connection to establish. Is this something that ...
1
vote
1answer
1k views

Receiving junk datas from the serial port of raspberry pi

Iam doing a project in which i need to read datas send from a ZIGBee through the serial port of raspberry pi. I have done removing that ttyAMA0 stuffs from /dev/cmdline.txt and commented that line in /...
3
votes
3answers
10k views

Underclock raspberry pi without rebooting

I want to reduce the frequency of operation of my raspberry pi without rebooting. Is there a way to do it ?? I know I can change the frequency by changing the config.txt but it requires a reboot.
2
votes
1answer
663 views

What's the smallest amount of memory that can be allocated to GPU?

According to http://elinux.org/RPiconfig#Memory , the minimum that can be specified in /boot/config.txt is 16MB. Is there a way to shut off video completely and allocate nothing? I'm asking about ...
2
votes
2answers
2k views

How to get a read-only Raspbian not to corrupt SD on power-loss

I need your help on this : How can I protect my read-only Raspian Raspberry pi not to corrupt SD card sectors ? Why does it ever happen and so frequently in my case ? (I did probably did something ...
1
vote
1answer
2k views

Keep Wifi Alive after 1 hour

I have currently set-up the following for wifi connection My wpa_supplicant.conf file just had these two lines: ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1 And my config....
1
vote
0answers
2k views

Multiple servo control RPi

I have written the following script to set positions for a single servo. import RPi.GPIO as GPIO import time #set up pin 11 as an output GPIO.setmode (GPIO.BOARD) GPIO.setup (11, GPIO.OUT) ...
1
vote
2answers
3k views

Why doesn't GPIO commands work?

I have upgraded to the new rPi B+ 2 now from the old B model. Keep in mind that everything worked fine with my older boards. Now with my newer boards it does not. I have my script in the rc.local ...
1
vote
0answers
159 views

Changing from spi bus to i2c bus to transfer register data of wm5102 in raspberry pi with wolfson audio card

I'm using wolfson audio card on raspberry pi b+ board.Current wm5102 driver uses spi bus to transfer register data but i want to use i2c bus to transfer data.By reading data sheet of 5102 i understood ...
0
votes
1answer
684 views

Setting up a Raspberry Pi for Wi-Fi streaming video access from a kite outdoors [closed]

I want to attach my already setup, video-streaming-capable Raspberry Pi web server setup to my kite and allow others in the close proximity to view the video via an IP address. There obviously won’t ...
2
votes
4answers
15k views

rc.local only runs manually, not on boot

I'm trying to get my Raspberry Pi 2 to automatically email its IP address when it boots. I included my entire /etc/rc.local file below for reference. When I manually run the file, I get an email with ...
1
vote
1answer
820 views

How to access SPI on Raspberry Pi B+

I tried searching here and other places. What is the best way to access the SPI and get the fastest speed out of it. My project involves interfacing the Pi with an ADC that is rated for 5Msps (http://...
0
votes
0answers
94 views

Ultrasonic Sensor isn't consistent

I setup ultrasonic sensor on B+, following instructions given in this video. But each time I test I get a different distance for the same object which hasn't moved, seems like it decreases every time ...
5
votes
1answer
2k views

Arch Linux ARM does not boot with QEMU

I try to set up a virtualized environment of the latest ArchLinux ARM (v6) in order to prepare a disk image that will be used later on a RaspberryPi. From the archive, I made a disk image with two ...
12
votes
2answers
960 views

Should GPIO pins 13 and 14 be soldered together?

I just bought a new Model A+ board, and noticed that the GPIO pins 13 and 14 (board pins 21 and 23) are soldered together on the backside. This was not the case with my previous A+ board: see the two ...
8
votes
3answers
5k views

How does the Raspberry Pi differentiate between multiple expansion boards?

I am just getting started with using the GPIO on the Raspberry Pi for various projects. There are many breakout boards for the RPi and many of those have pins in order to stack boards on top of each ...
1
vote
2answers
5k views

Installing an ISO from USB

So I recently got my Raspberry Pi 2 Model B, and decided I wanted to use it to practice hacking and other internet security things. Anyway, my teacher recommended that I first started by playing ...
1
vote
1answer
391 views

brushless motor speed control

I have successfully been able to turn the motors through the code pasted (found online). I am trying to adapt the code for a speed control, but it seems that the speed only goes to 100%, I have tried ...
1
vote
2answers
3k views

Noobs boot - no other systems visible internet connection through WiFi

I can't see other systems than raspbian on noobs installation window. RPI is connected through internet by WiFi - no possible connection through rj45. Is it possible to obtain network installers (...
0
votes
0answers
320 views

Wireless USB Mouse Stopped Working

I formatted my SD card, did a fresh install of Raspbian using NOOBS and started following a guide to access files from my Ubuntu media PC on my Pi. I actually didn't have any luck getting that to work,...
2
votes
1answer
263 views

Can't get wifi working in non-gui environment

I'm having trouble getting wifi working on my new RPi2. It works fine when I run X and use wpa_gui, but it's not working on the console, even when using the configuration saved by wpa_gui. The main ...
1
vote
3answers
6k views

Is it possible to make Javascript interact with the GPIO pins?

I want to make a game with Javascript with LED and pushbutton interaction. My problem is: I don't know how to make Javascript "talk" with the GPIO pins. Any help would be highly appreciated.
1
vote
1answer
954 views

How to set up MPU6050's registers properly?

I would like to use the MPU6050 as IMU in my quadcopter. I've been Googling for 2 days, but I can't find anything where this is explained well. I know that the settings are not general, but I hope ...
0
votes
1answer
208 views

What can I use to program a basic game in Python?

I've just started to program games, but I want a 3D game engine for Python like Phaser for Javascript. Any help would be highly appreciated.
0
votes
1answer
2k views

Raspberry Pi Select Correct Network Interface eth0 ppp0

I have a Raspberry Pi that has two network interfaces. 1, eth0 which is the Pi's ethernet port connected to my LAN (gets internet via Comcast, I connect to the Pi via SSH on my MBP). 2, ppp0 which is ...
2
votes
1answer
948 views

Raspberry pi 2 shuts down when TV does

I had a rPi Model B for a long time... and now I got an rPi2 but I am having a small problem with it. I had the same problem with the 1st pi but I dont remember what I did to fix it. Sometimes it goes ...
0
votes
1answer
2k views

Can't connect to hidden WPA2 hidden network

I am trying to connect to my works hidden network, I know the name of the network and the password but it doesn't want to connect to the network. I can see it when I can and still it will not connect. ...
2
votes
1answer
3k views

SSH keys not working on OpenElec (login without typing password)

I have installed OpenElec 5.0.5 on a Pi (2), fresh install. I enabled ssh, no problem logging-in, but I want to login without a password. So I copied my ssh key: ssh-copy-id "root@192.168.0.10x" It ...
0
votes
2answers
4k views

Reading GPIO status only works outside of PHP if statement?

I can read a GPIO pin's status as such: <?php exec ( "gpio read 7", $status ); print_r ( $status ); ?> this works fine. But I want to read the status from within a php if statement, ...
7
votes
1answer
9k views

Raspberry PI NOOBS first boot screen only three options. No OpenElec option

When I copy and paste the NOOBS package onto a fresh microsd and load it into my pi, on first startup I get only three options: Raspbian Data Partition Raspian - Boot to Scratch From all the ...
0
votes
0answers
985 views

Raspberry Pi 5GHz Dongle

I would like to ask if anyone has used a Raspberry Pi 5GHz dongle that works easily?
2
votes
1answer
38 views

apply video settings for specific monitor model

How can i change the display settings when using a specific monitor model? I frequently use my raspberry pi with different models of monitors, and at home i use a vertical widescreen monitor. i want ...
2
votes
0answers
1k views

3 Camera Interfacing on Raspberry Pi B for Live Streaming [closed]

I am new to Raspberry Pi. My basic requirement is to get the live stream from 3 cameras using a Raspberry Pi B. It can be at a low fps. I'm planning to use 2 USB cameras and one RPi Camera Module ...
2
votes
0answers
8k views

Cache filled before reaching required amount in OpenELEC

I am playing pictures and short HD videos (~40MB) from the SD card (not network), 24 hours a day with OpenELEC installed on Raspberry Pi. Everything was fine until the second day. Now when trying to ...
2
votes
1answer
964 views

Accessing ADXL345

I'm trying to access an ADXL345 Accelerometer mounted on a Sparkfun breakoutboard via Python and I2C from a Raspberry B+. I'm following this tutorial However when trying to check for the sensor with ...
11
votes
5answers
17k views

How can I wire this SD card reader to RaspberryPi?

I need to add a second SD card reader to my Raspberry Pi for the project www.samplerbox.org (the RPi will be embedded in a box, so I need a user-SD-card reader). Here is what I would like to use: ...
3
votes
1answer
2k views

QEMU for Raspbian Wheezy on Ubuntu - host is 'none', no job control, invisible text?

I'm having some issues getting Wheezy to work in QEMU. I've tried a lot of different combinations of arguments, all with the same results; this is the most recent I've tried. > qemu-system-arm -...
3
votes
1answer
293 views

Resource Monitoring

I am currently running Kali on RPI B. I want to see how well it is resourced in practice as an IDS. I am looking for a reliable method of logging in readable format: CPU % usage every second Disk % ...
1
vote
1answer
3k views

Installing Tomcat 7 - no JAVA_HOME while JDK is installed

I'm trying to get Tomcat7 running on a Raspberry Pi B+. I get an error message saying that JAVA_HOME is not set. I guess that if I set it in Bash, it won't load on startup, or am I wrong there? sudo ...
2
votes
3answers
1k views

Qt for Raspberry 2

I saw many threads about setting up Qt on Rpi v.1. RPi 2 is using ARMv7 architecture so probably toolchain for ARMv6 won't work like described here Additionally I would like to compile from Windows, ...
1
vote
2answers
4k views

Timestamp of the image being captured?

By Capture_sequence method of Picamera, I can capture consecutive images. I want the exact timestamp of each of the image that I capture. I can embedded time.time() in the name of each file that is ...
0
votes
1answer
82 views

Hire PI Developer to develop an analyitcs box based on raspberry pi

I am working on this new project to monitor signals from an STB box. I need a PI box to interface with the STB and i am looking for a PI developer? How do I hire someone?
0
votes
1answer
80 views

FREAK on Raspbian

Folks, I use Raspbian's native SFTP (not to be confused with FTPS) as well as SSH shell over the internet to access my files remotely. Just wondering if FREAK has any bearing on SFTP/SSH? If Raspbian ...
1
vote
1answer
6k views

png file in same folder as pygame file but not working

So i am on raspberry pi 2 and I am trying to make a game and i have the .py file in the same folder as the png but its still not working. it gives me this error: Also im using pycharm /usr/bin/...
1
vote
0answers
468 views

Controlling Arduino from web?

I am making a project in which I have several servo motors and LED's connected to the Arduino Mega 2560. I want to control these from a web interface over wifi. I have a Raspberry Pi which can act as ...
2
votes
2answers
11k views

Extremely slow wifi, wired connection is fine (OSMC)

I'm having issues with my wifi speed on my Pi 2 with the current osmc alpha build. The wired network connection is totally fine, I'm getting maximum download speeds with that. I have made one ...
2
votes
1answer
2k views

KeyboardInterrupt Handling with picamera

So I have a python program in which I'm using the picamera library to shoot pictures and record video. I'm using my program for scientific purposes and my goal is keep each picture as close to the ...
0
votes
2answers
306 views

How much power can the Pi supply?

I am making a project in which I will be using an arduino to control several servo motors and LED's. And I ll be using a Rqspberry pi to control arduino. They will be connected serially. In this ...

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