Thank you very much for your help, and sorry for not fully understanding your instructions in the beginning. I follow your instruction below in the link and put every needed file at /home/pi, instead of any subfolder. then the Pi camera works. Hmm, would be nice to be familiar with these... I don't ...

I tried again, there is error showed this time as below: === OpenCV Error: Image step is wrong (The matrix is not continuous, thus its number of rows can not be changed) in reshape, file /home/pi/OpenCV-2.3.1/modules/core/src/matrix.cpp, line 750 terminate called after throwing an instance of 'cv::E...

I tried and found camcv2 was running and there was no error report, because all the print notes I write in camcv2 is logged in the output file, but still there is no video window show up, and the Pi camera light is not on, which means Pi camera is not working. To me, I think camcv2 is running after ...

Thank you for all your help, my problem is not fixed yet. When I open a terminal, and input the command line "sudo python cron.py", it video window show up when button is pressed. While if I set a reboot and want it start automatically, after press the button, LED is on, which means the script is ru...

It could be because X is not up and running yet when crontab executes the script, so no video. Instead of crontab try adding it to " /home/pi/.config/lxsession/LXDE-pi/autostart ", so the script is run when the desktop comes up. I tried again, add "@sudo python /home/pi/cron.py" in /home/pi/.config...

I suspect the problem is that when your code is run by the root users crontab entry the working directory is not /home/pi. Which makes sense when you think about it, as root should start in its own home directory (/root). change: subprocess.Popen("./excutable_file data.csv 1 5000", shell=True) to: ...

I call a child program by using subprocess.Popen("./excutable_file data.csv 1 5000", shell=True) in my script cron.py. It works very well, and a window with video is shown on screen after run cron.py. (the excutable_file is used to show a video on screen) Now I want to run cron.py automatically when...

drgeoff wrote:The next guess (somewhat better informed) is that the card is filled with saved video. If you can run:

Code: Select all

df -h

what does it return?

Thanks for your information.
This problem is solved by connecting the SD card on Linux system computer and deleting some of the recorded videos.

No-one can know how to solve the problem because you have not given enough information. What is on the (micro-)SD card and how did it get there? We might guess that you loaded Raspbian but did not do the step of expanding the file system to use the whole card. But there are many other possibilities...

No-one can know how to solve the problem because you have not given enough information. What is on the (micro-)SD card and how did it get there? I installed Raspbian with NOOBS installer, and have OpenCV installed, too. I have two separate scripts to realize two functions: one is video recording an...

My Raspberry Pi 2 can not start. When I plug in power, there is some message scrolling on screen as normal in the beginning, then there is one line warning 'no sufficient free space', while the message scroll so fast that I can not see clearly the whole message. After that, the screen just turn blac...

DougieLawson wrote:The DNC pin is a GND pin on all B rev2 and later RPis

Thank you for your information. it helps.

it should work on a B+/2B as the first 26pins remain the same across all models of raspberry pi While I see there is a little difference between the two board : Pin 4 : in old version it should be 'DNC', while in new version, it is "DC power 5V". The similar question on pin 9, 14,17, 20 and 25 . Do...

BerryClip 6 LED Buzzer Board, with the link here : http://www.raspberrypi-spy.co.uk/berryc ... -on-board/
It was compatible with the old version Raspberry Pi with 26 pins. Does it also compatible with the new version Raspberry Pi 2 Model B?

Can any one help me with this question?
Thank you.