1 4 5 6 7 8 9 133 Replies Latest reply on Feb 3, 2014 1:07 PM by mcb1 Go to original post
      • 75. Re: PiNoir & Santa Catcher Challenge Support
        Problemchild

        I'm sure you could put raspistill into a Cron job for most of the slower sample speeds or may be just have a bash script with  a loop and a sleep command although as you say this is all ready existing .

        Selsinork is investigating the V4L driver for the camera will be cool especially if it proves to be reliable.

         

         

        As regards to the colours I'm sure that's the lack of the IR filter with the IR swamping out the real colours. Have you tried playing with the filter sheet at all?

        • 76. Re: PiNoir & Santa Catcher Challenge Support
          mcb1

          John

          The raspstill has timelapse capability built in, which is what the snap-camera scripts use, so you don't need a cron job as such.

          Although having said that, using a cron job/script for each photo would allow a trigger to be sent to the GPIO to control a flash, IR source or a motor.

          The same could then trigger the photo/video based on the GPIO input, which will be handy for my next article/project.

           

          The PiFace Control does make it very easy, since you can just set it and walk away without needing to login and do what you need.

          The scripts are there, and seem easy enough to tweak ...its just the wrong time at the moment.

          I did see some other timelapse software around, so some downloading and mixing might be the go.

           

          I won't get a chance to do much in the way of the blog until I return after the 2nd Jan, but I can put some words together in between drinks I'm sure.

           

           

          Yes the colours will be funny, and I did realise that before setting it off on the unwrapping timelapse. We decided we can always make it B&W so it wasn't an issue.

          I'll probably have a play with the scripts, and see if I can tweak it and do something on New Years eve, (depending on where we end up this year).

           

           

          Someone (it might have been Selsinork) was having issues with it crashing on video, so it could have been fixed. I know jamesh has done quite a bit on the inner workings.

          Having an alternative driver might be cool, but in the meantime this works.

           

          Mark

          • 77. Re: PiNoir & Santa Catcher Challenge Support

            Mark Beckett wrote:

             

            The raspstill has timelapse capability built in, which is what the snap-camera scripts use, so you don't need a cron job as such.

            I've done several months worth of timelapse stuff using the built-in timelapse mode in raspistill.  Two problems:

            1. exposure modes, iso settings etc seem to be fixed when you start raspistill, so if you start it in daylight the settings don't work so well at night.

            2. if you set a 5 second timeout you got 5 seconds between captures, the time required for the capture wasn't taken into account so the actual interval could be more like 6 seconds. This one may have been fixed in more recent versions of raspistill.

             

            I have working ffmpeg commands to convert a group of stills into h264 encoded mp4 if you want them. Probably too slow to run on the Pi and the weird debian fork of ffmpeg, avconv, omits all of the controversial codecs like h264 anyway.

            Someone (it might have been Selsinork) was having issues with it crashing on video, so it could have been fixed. I know jamesh has done quite a bit on the inner workings.

            Having an alternative driver might be cool, but in the meantime this works.

            Yes, with early versions of raspivid I had problems with random crashes. There's a lot of work been done by jamesh and others since then, so that may have been fixed. I've not tried raspivid in quite a while, so I can't say for sure if it has.

             

            The v4l2 driver seems to have been done by some different broadcom employees, jamesh went as far as saying not to ask him about it as he had nothing to do with the driver: http://www.raspberrypi.org/forum/viewtopic.php?f=43&t=62364&start=25

             

            Limited testing so fas shows the v4l2 driver does work, but it obviously still has some issues to be worked out. Reading the RPF thread again this morning and it seems they've added a possibly working MJPEG mode as well.  More choices are good, more possibilities to get to the result you want!

            • 78. Re: PiNoir & Santa Catcher Challenge Support
              mcb1

              exposure modes, iso settings etc seem to be fixed when you start raspistill, so if you start it in daylight the settings don't work so well at night.

              I would expect the ISO and any effects to stay the same, but the changing light condition is going to be a problem.

              If the metering dropped the exposure time down, you can also start getting blurry images, so any timelapse will be an issue.

               

              Obviously you have much more experience using these tools, and the limited 5MP (I tend to use 24MP in raw form ...so just a bit more room to play).

               

              The more I think about it, the more I'm liking the script to take a single image, which allows outputting to the GPIO, etc.

              You can still use the Piface cad and snap-camera to do the setup, but then have it perform a single image at a time.

               

              I'll send an email.

              Thanks

               

              Mark

              • 79. Re: PiNoir & Santa Catcher Challenge Support

                Mark Beckett wrote:

                I would expect the ISO and any effects to stay the same, but the changing light condition is going to be a problem.

                If the metering dropped the exposure time down, you can also start getting blurry images, so any timelapse will be an issue.

                For me the problem was a lack of control. Even my cheapy cannon point & click can be put into manual mode where you can compensate for the software making stupid decisions. You can't do that with the Pi camera so you have to resort to changing a setting that you do have control over in the hope of influencing the software to change ones that you don't.

                 

                If you set the camera to full auto mode and use a script to call raspistill every 5 seconds, you'll get very different results from using the built in timelapse mode. Simply because the camera will completely re-evaluate it's choices on every run instead on once at the start.

                 

                If you read the RPF forums, there's various methods proposed for dealing with this for timelapse. Some people are reading the exif data from the previous image and using it to adjust the settings for the next invocation of raspistill. Others are processing the full image to determine their own light levels then using that result to adjust the camera settings.

                I had intended to use a generic ambient light sensor, but ran into a problem where it was working ok with flourescent light, but not incandescent. I need to make some PCB's to try out some of the other sensors and just haven't got round to that yet.

                The subject of my timelapse stuff has gone now anyway, so it may take me a while

                 

                On the NoIR side, I've read some posts where people are using 'sports' exposure mode as this aparrently lets the camera choose ISO modes up to 3200 and shutter times over 1 second with the latest firmware/apps. Havent tried it myself yet, but as it's winter here there's ample opportunity for night time photos

                • 80. Re: PiNoir & Santa Catcher Challenge Support
                  Problemchild

                  Guys, took a desolder tool to the PIFace Control and Display, have taken photos and done a rather rough rendition of the schematic

                  here.

                   

                  Hope it helps... John

                  • 81. Re: PiNoir & Santa Catcher Challenge Support
                    slopop27@gmail.com

                    Hey John,

                    Merry Christmas and a Happy New Year all!!

                    I am sad to report, Package has still not arrived.  We've been checking the mailbox every day, still nada.

                    Cheers,

                    Eric

                    • 82. Re: PiNoir & Santa Catcher Challenge Support
                      bfreepc@gmail.com

                      Just received our kit,  the day after Christmas.  Needless to say we were still excited.  Upon unboxing we found no camera.  Was this shipped separately and we need wait or request another camera in order to perform our belated project?

                      Thank you

                      Bert

                      • 83. Re: PiNoir & Santa Catcher Challenge Support
                        Frederick Vandenbosch

                        Seems there have been a lot of issues with the kits. All parts should be included (at least they were for me).

                         

                        Better check with Laureen:

                        As I am away on holiday, please send any queries in regards to shipment of the products to my colleague Laureen Slater.  She can be reached on LSlater@newark.com.

                        • 84. Re: PiNoir & Santa Catcher Challenge Support
                          doctorcdf

                          Eric - You should have been contacted by a representative - you gave us a Post Office box address which doesn't work? Please advise if you haven't.

                          • 85. Re: PiNoir & Santa Catcher Challenge Support
                            doctorcdf

                            Bert - I will chase this up for you - thanks for letting me know.

                            • 86. Re: PiNoir & Santa Catcher Challenge Support
                              gregoryfenton

                              Hi Christian, are you back now or checking on forums from the comfort of your home?

                               

                              Will missing or non-functional parts of this road test be despatched? I and others have asked previously but had no official response.

                               

                              For me the NOOBS SD card was missing, and the camera module does not work.  I have tried several versions of Raspbian up to and including the noobs version released a few days ago and in 2 different Raspberry Pis.

                              • 87. Re: PiNoir & Santa Catcher Challenge Support
                                doctorcdf

                                Greg - I'm still officially on holiday  so I may be a bit delayed in response - Frederick was apparently able to get the camera to work, are you suggesting it's a hardware fault? If so, I'll arrange a replacement. Best Regards, Christian

                                • 88. Re: PiNoir & Santa Catcher Challenge Support
                                  doctorcdf

                                  I have found out where the missing cameras have gone; these will be shipped as soon as possible.

                                   

                                  We will extend the deadlines as a result to Friday, January 31st.

                                   

                                  Thank you for your patience in this regard.

                                   

                                  Best Regards, Christian

                                  • 89. Re: PiNoir & Santa Catcher Challenge Support
                                    gpolder

                                    This morning (27/12) I received:

                                    • a raspberry-pi/8GB
                                    • a wipi
                                    • a piface
                                    • and a camera housing

                                     

                                    No raspbery-pi case and picam-noir yet, are they on backorder?

                                     

                                    Anyway, I now can start installing raspbian and testing the pif ace, thanks so far,

                                     

                                    Gerrit.

                                     

                                    today (30/12) I received the camera,

                                    so everything is available now to start experimenting.

                                     

                                    Gerrit.

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