Well actually I can upload different versions of CHDK automatically, do dome test shots and then download and compare them, but this is fine tuning I will have to do later. For now I have to live with the sync, because I have to make the system run as a whole.
Now I was thinking how to put the hardware together and made a small schematic drawing for clarifying myself and maybe to show here how the system is built, maybe someone wants to build a rig, I hope this is a little overview of some use then.
When using the battery sensor as a trigger, CHDKPTP for communication and also a external power supply for the cameras, each camera is connected to three devices:
1. Trigger device (in my case Arduino)
2. CHDKPTP-device (in my case Window 7 PC)
3. Power device
Now to make things easier to connect a camera I was thinking to feed +/- of the power supply to a normal USB Cable and the trigger signal coming from the Arduino to the same USB cables data wires.
At the cameras side I would then have a male USB connector which would be plugged to a female USB connector and would get power and trigger signal in one go this way.
Now I wonder if this is really a good idea. Would you think that there are some drawbacks when having both the power from the power supplies and the trigger signal in one single convential USB-Cable?
Please have a look at the schematic attached. What's your opinion?
