I have been playing with my camera board a few minutes and found that even if I try to set the -t option to low values and suppress preview output, the camera LED is on for about 4 seconds when taking a picture with raspistill. Is it possible to access the camera faster to take exactly one picture? Also, unfortunately the documentation on the RPi-Side is rather lacking, given they are producing and selling thousands of these things - can the camera LED be used to synchronize to the acquisition (e.g. flash)? I read that the "warning, camera is on" LED output can be suppressed and reactivated by IO, which leaves to the assumption that the LED is not controlled by the camera and thus triggering is not possible due to latency (unless this is fixed and comes on before acquisition). http://www.raspberrypi.org/camera https://github.com/raspberrypi/userland/blob/master/host_applications/linux/apps/raspicam/RaspiCamDocs.odt http://elinux.org/Rpi_Camera_Module Sensor: OmniVision OV5647 http://ovt.com/products/sensor.php?id=66
I am also interested in this. I'd like to use the Pi and camera to build a device that can take occasional snapshots for remote monitoring purposes.
Have a look at the 'official' forums for camera 'demo' feature suggestions: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=45089&start=50 Not much reaction, but more info about the camera behaviour than found in docs/main wikis. It is stressed that the applications that enable use of the camera module are just demos... About compiling the 'demo' tools: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=43990&start=25 I still think it's curious that with tens of thousands of RPis out there it seems so inactive. Apparently, the original developers are busy with more important things (new stuff?) and don't have much experience (somewhere in the middle, I can't link posts directly): http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=56065 Here, someone is trying to analyse the I2C communications for setting up the camera: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=47798 So time to DIY, but I can't do it.