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Alvaro Velloso

Member Since 22 Mar 2006
Offline Last Active Apr 04 2014 03:34 PM
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Posts I've Made

In Topic: iTTL Protocol

03 April 2013 - 06:10 PM

Hi all,

 

I finally found what I was looking for. Not need to hack it anymore.

The protocol is a little bit more complex than I expected, but still feasible to implement.

 

http://cms.diodenrin...10-ittlanalysis

http://off-the-clock...-flash-analysis

 

I'm developing a strobe with special features and this protocol may be a good adition in the future.

 

All the best, Alvaro


In Topic: Diy Led underwater flash strobe

25 May 2012 - 08:52 AM

Yes they are trigger like flashes (short duration pulse ) the caps are regulars nikonos protectors caps.

Thanks and happy dives


Hello,
Excellent job.
Any ideas to increase pulse width up to 20ms (1/50)? I can use a small macroprocessor for doing it.
Cheers,
Alvaro

In Topic: Diy Led underwater flash strobe

23 May 2012 - 04:29 PM

Not much help unless you are a boffin but it seems that pins 2,3,4 & 5 are for digital serial communication with ETTL strobes rather than simple high/low status signals. They communicate stuff such as aperture, focal length, shutter speed. ISO etc. Top left is the data clock, top right & bottom left carry the data.


EDIT - Here you go :-
http://kzar.net/wiki...onE-TTLProtocol



Hello, do you know where I could find iTTL specifications for Nikons?

Cheers !