Raspberry Pi Forums

strawberry

Hi, I've been playing around with the hello_fft.c GPU accelerated FFT example but I have some questions about the results. For example a sine wave of 20Hz in 1024 samples as input signal: input.png This gives the following result: a peak of 511 at sample 40. I'd rather expect 2 peaks of 1.0 at 492 a...

strawberry

If anyone ever needs to compile OpenBTS on Raspbian Stretch here is how I did it: The coredumper library seems to be impossible to compile for ARM so I decided to create a "fake" library that has all functions defined but they do nothing. OpenBTS only needs the coredumper to dump information for deb...

strawberry

hi, Is there anyone that has successfully compiled OpenBTS for the Raspberry Pi? I'm struggling with compiling libcoredumper ( https://code.google.com/archive/p/google-coredumper/downloads ) which is required by OpenBTS. When I tried to build the libcoredumper with the supplied build.sh I get this e...

strawberry

I'm using the IP camera software from https://github.com/silvanmelchior/RPi_Cam_Web_Interface.git, I'm also using this on another Raspberry which is connected with LAN interface without problems. SD card is a high endurance card and images are automatically deleted after a week, CPU usage is around ...

strawberry

Yes i've tried reboot but doesn't solve the problem unless I pull the power plug for 10-15 minutes after that it works better again for a short time. Outside temperature is around 10-15°C a.t.m. in Belgium so not really hot, of course the Raspberry is inside a water proof box where ambient temperatu...

strawberry

It is around -80DBm / -88DBm

strawberry

Hi, I have a Raspberry Pi Zero W setup as a security camera. In the beginning everything was working fine I had good wifi signal / webpage was loading fast. However after a few months the wifi speed was getting slower every week until a certain point where it totally stopped working (ping had like 9...

strawberry

No, buy a different modem

strawberry

I was wondering if there is a way to automatically (with software) remove the IR (red) from pictures taken with normal daylight using a noIR camera? I have a normal "commercial" wildlife camera and during the day it will shoot pictures without the infrared but when it gets dark it automatically swit...

strawberry

I can now confirm the SDSDQQ-032G-G46A, 64GB version works perfect with the Raspberry. Can someone add it to the table?
The 16GB version from Transcend TS16GUSDHC10 is also working.

strawberry

Well i have a Sandisk 64GB I didn't buy it on Ebay and is in my Pi for about 2 years running 24/7. Last week I wanted to create a backup before upgrading the system. I can read the data until +/- 3.8GB then I get an I/O error... Another Transcend 16GB card I bought last week crashed during installat...

strawberry

TS32GUSDHC10 (32GB) says "NOK" doesn't boot

but the TS16GUSDHC10 (16GB) is OK ...

strawberry

hi, Does anyone have experience with Sandisk High Endurance microSD cards and the Raspberry Pi? https://www.sandisk.com/home/memory-cards/microsd-cards/high-endurance-microsd Are they reliable, they will probably last longer in case of many writes but will they get corrupt in case of a power failure...

strawberry

OK thanks

strawberry

Hi,

I want to create a PCB hat for the Raspberry Pi 3 and I want to connect the GPIO and reset (RUN) connector. But where can I find the exact X,Y location of the RUN connector?

strawberry

I want pictures to be stored on an external HD, by default this drive is mounted in /media/pi/drive. Create a folder pictures on the drive and I thought the easiest way to get them on the drive was to make a link with between the folder on the drive and the media folder: ln -s /media/pi/drive/pictur...

strawberry

Installed a new SD card and it's working now for more than a week. I think it was a problem with the contacts of the SD card because the file system seems fine when mounting the card on a computer.

strawberry

I have a Raspberry pi set up as a security camera (with Pinoir camera module). It worked perfectly for 9 months but since 2 weeks ago it stops working after a few days. It has apache running as a webserver, samba for file sharing. When I go to the webpage after the crash it shows a message there are...

strawberry

Thanks,

It seems to work, installed the latest versions and the leds on the USRP now light up correctly.

But still don't see anything useful in the gnuradio-companion spectrum analyzer example

strawberry

Does anyone know how to install the newer versions of uhd-host 3.9.4 and gnuradio 3.7.10? I see there are packages available here http://archive.raspbian.org/raspbian/pool/main/u/uhd/ and http://archive.raspbian.org/raspbian/pool/main/g/gnuradio/ When I try to install uhd-host 3.9.4 I see: sudo dpkg...

strawberry

Did you try to unplug your TV and Raspberry for 5 min, plug it back in and turn on the TV and then the Pi?

strawberry

You must first download the source code and compile the hub-ctrl program before you can use the command:

Code: Select all

sudo apt-get update
sudo apt-get install git gcc libusb-dev
git clone https://github.com/codazoda/hub-ctrl.c
gcc -o hub-ctrl hub-ctrl.c -lusb

After that you can use sudo ./hub-ctrl ...

strawberry

Must be some different version neopixel chip I think.
I'll check it as soon as I have some time...

strawberry

Here is a video how you can do this:
https://www.youtube.com/watch?v=_eXHpJWWbQo

The video is for 2 ethernet connections but it should also work with 1 ethernet and 1 wifi

strawberry

If you want to calibrate the AR1100 directly on your Raspberry, you can use this program I made: https://github.com/tom-2015/rpi-AR1100

Search found 49 matches

GPU accelerated FFT (hello_fft.c)

Re: Compile OpenBTS / libcoredumper

Compile OpenBTS / libcoredumper

Re: Raspberry Pi Zero Wifi signal gets bad after time

Re: Raspberry Pi Zero Wifi signal gets bad after time

Re: Raspberry Pi Zero Wifi signal gets bad after time

Raspberry Pi Zero Wifi signal gets bad after time

Re: Globetrotter HSDPA Modem ICON225

Remove red in daylight Pi noIR camera image

Re: High Endurance SD card

Re: High Endurance SD card

Re: High Endurance SD card

High Endurance SD card

Re: excat location of the reset/run header

excat location of the reset/run header

Re: RPi Cam Web Interface

Re: Pi crashes, all files disappear

Pi crashes, all files disappear

Re: Install uhd-host 3.9.4 / gnuradio 3.7.10

Install uhd-host 3.9.4 / gnuradio 3.7.10

Re: No sound over HDMI [solved]

Re: Raspberry Pi B+ turn usb power off

Re: WS2812 NeoPixel led server

Re: Bridged Connection

Re: Microchip AR1100 USB Touchscreen Controller