Go to advanced search

by strawberry
Sat Oct 27, 2018 3:14 pm
Forum: Graphics, sound and multimedia
Topic: GPU accelerated FFT (hello_fft.c)
Replies: 0
Views: 832

GPU accelerated FFT (hello_fft.c)

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...
by strawberry
Wed Dec 06, 2017 11:31 am
Forum: Other projects
Topic: Compile OpenBTS / libcoredumper
Replies: 1
Views: 1576

Re: Compile OpenBTS / libcoredumper

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...
by strawberry
Wed Nov 01, 2017 12:40 pm
Forum: Other projects
Topic: Compile OpenBTS / libcoredumper
Replies: 1
Views: 1576

Compile OpenBTS / libcoredumper

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...
by strawberry
Mon Oct 30, 2017 12:38 pm
Forum: Troubleshooting
Topic: Raspberry Pi Zero Wifi signal gets bad after time
Replies: 7
Views: 700

Re: Raspberry Pi Zero Wifi signal gets bad after time

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 ...
by strawberry
Mon Oct 30, 2017 12:23 pm
Forum: Troubleshooting
Topic: Raspberry Pi Zero Wifi signal gets bad after time
Replies: 7
Views: 700

Re: Raspberry Pi Zero Wifi signal gets bad after time

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...
by strawberry
Mon Oct 30, 2017 11:52 am
Forum: Troubleshooting
Topic: Raspberry Pi Zero Wifi signal gets bad after time
Replies: 7
Views: 700

Re: Raspberry Pi Zero Wifi signal gets bad after time

It is around -80DBm / -88DBm
by strawberry
Mon Oct 30, 2017 10:12 am
Forum: Troubleshooting
Topic: Raspberry Pi Zero Wifi signal gets bad after time
Replies: 7
Views: 700

Raspberry Pi Zero Wifi signal gets bad after time

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...
by strawberry
Sun Oct 22, 2017 11:33 am
Forum: General discussion
Topic: Globetrotter HSDPA Modem ICON225
Replies: 5
Views: 3855

Re: Globetrotter HSDPA Modem ICON225

No, buy a different modem ;)
by strawberry
Sun Jul 23, 2017 10:28 am
Forum: Camera board
Topic: Remove red in daylight Pi noIR camera image
Replies: 3
Views: 1290

Remove red in daylight Pi noIR camera image

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...
by strawberry
Sun May 28, 2017 8:33 am
Forum: General discussion
Topic: High Endurance SD card
Replies: 44
Views: 15605

Re: High Endurance SD card

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.
by strawberry
Sun May 07, 2017 8:19 am
Forum: General discussion
Topic: High Endurance SD card
Replies: 44
Views: 15605

Re: High Endurance SD card

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...
by strawberry
Sat May 06, 2017 12:04 pm
Forum: General discussion
Topic: High Endurance SD card
Replies: 44
Views: 15605

Re: High Endurance SD card

TS32GUSDHC10 (32GB) says "NOK" doesn't boot :( but the TS16GUSDHC10 (16GB) is OK ...
by strawberry
Sat May 06, 2017 9:37 am
Forum: General discussion
Topic: High Endurance SD card
Replies: 44
Views: 15605

High Endurance SD card

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...
by strawberry
Sat Apr 15, 2017 1:04 pm
Forum: General discussion
Topic: excat location of the reset/run header
Replies: 2
Views: 361

Re: excat location of the reset/run header

OK thanks
by strawberry
Sat Apr 15, 2017 10:21 am
Forum: General discussion
Topic: excat location of the reset/run header
Replies: 2
Views: 361

excat location of the reset/run header

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?
by strawberry
Sat Mar 18, 2017 11:21 am
Forum: Camera board
Topic: RPi Cam Web Interface
Replies: 4984
Views: 1255354

Re: RPi Cam Web Interface

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...
by strawberry
Sat Nov 05, 2016 9:43 am
Forum: Troubleshooting
Topic: Pi crashes, all files disappear
Replies: 2
Views: 453

Re: Pi crashes, all files disappear

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.
by strawberry
Fri Oct 21, 2016 4:37 pm
Forum: Troubleshooting
Topic: Pi crashes, all files disappear
Replies: 2
Views: 453

Pi crashes, all files disappear

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...
by strawberry
Sat Aug 27, 2016 8:06 am
Forum: Raspbian
Topic: Install uhd-host 3.9.4 / gnuradio 3.7.10
Replies: 2
Views: 1863

Re: Install uhd-host 3.9.4 / gnuradio 3.7.10

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 :cry:
by strawberry
Fri Aug 26, 2016 11:47 am
Forum: Raspbian
Topic: Install uhd-host 3.9.4 / gnuradio 3.7.10
Replies: 2
Views: 1863

Install uhd-host 3.9.4 / gnuradio 3.7.10

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...
by strawberry
Sun Jul 03, 2016 8:07 am
Forum: Troubleshooting
Topic: No sound over HDMI [solved]
Replies: 75
Views: 328087

Re: No sound over HDMI [solved]

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?
by strawberry
Tue Jun 21, 2016 4:09 pm
Forum: Advanced users
Topic: Raspberry Pi B+ turn usb power off
Replies: 46
Views: 84893

Re: Raspberry Pi B+ turn usb power off

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 ...
by strawberry
Fri Apr 08, 2016 4:18 pm
Forum: Graphics, sound and multimedia
Topic: WS2812 NeoPixel led server
Replies: 3
Views: 7795

Re: WS2812 NeoPixel led server

Must be some different version neopixel chip I think.
I'll check it as soon as I have some time...
by strawberry
Sun Jul 26, 2015 6:26 pm
Forum: General discussion
Topic: Bridged Connection
Replies: 3
Views: 559

Re: Bridged Connection

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
by strawberry
Sat May 09, 2015 3:27 pm
Forum: Other projects
Topic: Microchip AR1100 USB Touchscreen Controller
Replies: 6
Views: 7185

Re: Microchip AR1100 USB Touchscreen Controller

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

Go to advanced search