Re: Regarding Camera Wireless Flash Trigger
1
Ok, just tripped over this thread and I realize it’s getting a bit old. The lack of responses indicate that this is a pretty thin area in general photography. but I’ve some experience playing here. So see my thoughts below...
sakibnaz wrote:
Hi All.
I want to make a Wireless based DSLR Camera Flash Trigger system. Some ques please:
-1. I want to trigger the flash using existing Wireless receiver in the market. For this Wireless communication is there any standard or protocol which all Of-Camera Wireless (RF) Flash receiver manufacturer maintains?
Basically, as far as I can fathom, no there isn’t. The protocols are mfr proprietary and not published.
So I can develop only the transmitter and use the same protocol to send Wireless commands to trigger flash?
Not with any realistic practicality unless you have some very specific tools to intercept and analyze wireless protocols on these open frequencies. Not exactly found in a regular diy toolbox.
-2. In case I need to design both transmitter and receiver then I need to use Hot-Shoe signal. Can anyone advice detail document how Hot-Show pin and its signal works? I did googled already but did not find much design in terms of helpful for electronics design.
There is actually quite a bit of info on the various standard hotshot signals. Manual flash is basically just shorting the big central contact and the hot shoe bracket. You can try it with a flashgun. TTL flash is more complex and not nessarily about simple voltages either. It’s also strictly mfr specific too. Best to ignore TTL control...
-3. Is there any standard connector PCB Mount for Canon/Nikon/Sony Hot-Shoe male and female?
Not that I know of.
Thanks in advance.
Regards.
That all being depressingly said, it it not that hard to find wireless units that you can simply interface to using a wired shutter release (see Camtraptions.com) or hack / mashup a cheap unit like the Yongnuo Rf-603. I did the latter. Here are some tips on what I did:
http://camtrapper.com/viewtopic.php?f=113&t=11778 - you may have to register to view the pics!