can you help me to configure this PTP transmission?
I need to receive a trigger on the USB port after a shot because I want to log infos (in synch) avaliable on a Arduino board. Probably I just need to send a byte on the port, can you help me to configure this PTP transmission?
I just need to read a square wave on the data line of the Usb to know the picture was taken.
I tried with the standard remote synch but the delay is not costant (in manual mode and manual focus naturally).
To blink the led (which one? the green one connected to the SD writing?)
I don't like so much to paste a photodiode on the canon...
Is there a way to send some signal in output after the shot?
The standard USB remote code is capable of very precise shutter release timing if you use the right sequence. With the switch mode set to "One Press" and "Sync" enabled, have your Arduino assert the 5V line prior to when you need to release the shutter and hold it high. When you want to shoot, set the 5V line to 0V. You should get a shot less than a few milliseconds later and that delay will be very consistent from shot to shot.
Additionally, if you are triggering the camera with the "USB remote" functionality (using the usb +5v signal to trigger shots), you cannot combine this with any USB protocol communication. USB remote hides the status of the USB power bit from the rest of the firmware.
Ask this supplier http://www.gentles.ltd.uk/gentstereo/videosync.htm if he will sell you just the sensor without the tube over it or the USB cables.I can tell you how to wire it up.
With the as yet not officially released SDM 1.86 that signal is a standard option.No need for scripts.If you want to try it I may be able to provide a build depending upon which camera you have.
Thanks waterwingz! I suspect he's not holding the 5 volt line high and dropping it to 0 long enough for my original USBLapse script to detect it. I'd suggest holding it at 0 for 100 msec. This will give the script time to process it.
Started by ceegee
Started by thepanoguy
Creative Uses of CHDK
Started by photoboop
Creative Uses of CHDK
Started by waterwingz
General Discussion and Assistance
Started by maymaykumar