No Camera Picture

Submitted by cocoda74 on Sun, 08/28/2016 - 17:38

Forums:

Hello
If i check the Raspberry Pi camera with following command:
raspistill -d
i don't see the image from the camera on the monitor for a few seconds.
Also i don't get an error messages instead.
I use the Raspberry Pi 5MP Camera-Module

Images: 
piborg's picture

piborg

Sun, 08/28/2016 - 21:12

Most of the time when we have problems the cable is not connected correctly.
I would double check that both ends are:

  • Facing the correct way
  • Firmly pushed in
  • Have the connector pushed fully shut

If that does not help I would suggest working through the official camera troubleshooting:
https://www.raspberrypi.org/documentation/raspbian/applications/camera.md

cocoda74

Tue, 08/30/2016 - 16:28

See the Attachement

Images: 
piborg's picture

piborg

Tue, 08/30/2016 - 18:30

Does the result file test.jpg exist?

If it does can you see if it is an image from the camera.
If it is then everything is working correctly.

cocoda74

Tue, 08/30/2016 - 19:05

Where is that file stored.
Can i find it with SSH?
Sorry, i am a noob...:)

Another Questiion:
Is there still a Problem with Script Running over SSH?
https://www.piborg.org/node/2005

piborg's picture

piborg

Tue, 08/30/2016 - 19:29

The camera output will have been saved to: ~/test.jpg.
Viewing via SSH may prove more difficult however, maybe copy the file to a USB stick?

There should not be a problem running the script via SSH, the problem in that post was a misunderstanding about sudo.

I would try running the WebUI script and see if it works.
This will skip the need to check the file if everything is okay.

cocoda74

Tue, 08/30/2016 - 20:40

Hello
Thanks a lot. I installed VNC so i find the Picture!
The WebUI Script i will test tomorrow...

Is it possible to show the percentage of the Battery?

cocoda74

Wed, 08/31/2016 - 08:15

Hy
Making pictures is ok but i dont receive a image stream on the WebUI!

piborg's picture

piborg

Wed, 08/31/2016 - 11:19

I presume you are still using the modified version of the Web UI from this post:
https://www.piborg.org/comment/4101#comment-4101

If that is the case then the version you are using has the camera image removed.
You should remove this version and use the original copy of the script.

If you followed the instructions here: https://www.piborg.org/diddyborg/webui
then the original script should be run using this command:
sudo ~/diddyborg-web/diddyWeb.py

cocoda74

Wed, 08/31/2016 - 12:03

Hy
No, i am mot using the modified version!
I still folowed the instructions and use the original script...

piborg's picture

piborg

Wed, 08/31/2016 - 13:12

That is rather odd.

Can you take a screenshot of what you are seeing?

cocoda74

Wed, 08/31/2016 - 14:50

Hello
The Diddyborg is connected on Wifi, the PC on the same Wifi
The onboard BT and Wifi is disabled, i use for Wifi and BT USB Dongles!
The second Picture is with a other Wifi Access...

Images: 
piborg's picture

piborg

Wed, 08/31/2016 - 15:08

There is an unexpected message in that log:
/usr/lib/python2.7/dist-packages/picamera/encoders.py:545: PiCameraResolutionRounded: frame size rounded up from 240x180 to 240x192

This is probably a bad thing, I would suggest changing the image size to match the correction.
To do this change the line

imageHeight = 180                       # Height of the captured image in pixels

to

imageHeight = 192                       # Height of the captured image in pixels

This might fix the black screen you are seeing.

cocoda74

Wed, 08/31/2016 - 16:02

No improvement

piborg's picture

piborg

Wed, 08/31/2016 - 16:08

I am not really sure what the problem actually is here.
It looks like an image is being fetched, but it is blank.

What do you see if you visit this URL:
http://10.220.97.27/cam.jpg

cocoda74

Wed, 08/31/2016 - 16:12

This

Images: 
piborg's picture

piborg

Wed, 08/31/2016 - 16:33

I can only guess that the script is unable to read an image from the camera for some reason.

Can you try this command:
raspistill -w 240 -h 192 -o check.jpg
What does check.jpg look like?

cocoda74

Wed, 08/31/2016 - 17:26

see

Images: 
piborg's picture

piborg

Wed, 08/31/2016 - 18:51

Can you run these commands to get the libraries the script needs to see the camera:
sudo apt-get -y install python-picamera
sudo apt-get -y install libcv-dev libopencv-dev python-opencv
then restart the Pi.

After that try the Web UI again and see if it works now.

cocoda74

Wed, 08/31/2016 - 19:09

Still no picture!!!
I think to new install all (Raspian and all Scripts for the DiddyBorg)
Or do you have another Idea?

Images: 
piborg's picture

piborg

Wed, 08/31/2016 - 19:20

I think a clean install is probably the quickest way to get things going.

Let us know if that solves the problem.

cocoda74

Thu, 09/01/2016 - 06:19

Hy
So i had very long for the clean install and the install of the diddyBorg software!
The Problem with "no Picture" is still here...
At the Moment im very frustrated, what do I wrong or is it a bug in the script???

Could it be something with the Wifi, Internet, Portforwarding or something like that?
I use an open Wifi Connection wth the Laptop as Hotspot (Connectify) or i use my Sony Z5 Premium as 3G Hotspot...
It s only the Picture, Video Streaming who doesn`t funktion...

piborg's picture

piborg

Thu, 09/01/2016 - 11:11

The most likely cause is that the picamera library we are using is not handling the camera module correctly.

Can you try updating the software on the Pi using:

sudo apt-get update
sudo apt-get dist-upgrade

cocoda74

Thu, 09/01/2016 - 13:26

Hy
After the Cleaninstall i repeated every try of this thread, but i have still noch Picture on the WebUI...

piborg's picture

piborg

Thu, 09/01/2016 - 13:33

I am really confused now, you should not really be having this much trouble :(

Can you try doing a complete update with this command:
sudo rpi-update

cocoda74

Thu, 09/01/2016 - 16:41

Hy
I attached the download only for Information!
The Test i will do in the next hour...

Images: 

cocoda74

Thu, 09/01/2016 - 16:45

Hy
IT works, thats so great...
Thank you very very much for your Help

piborg's picture

piborg

Thu, 09/01/2016 - 17:26

I am happy to hear that it is working correctly now.

I can only guess that the code running the camera needed to be updated fully to work.

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