Add a sync port to 580 EX (DIY)

So I'm trying to add a sync port to my Sigma 500 Supers and wasn't able to get it according to Vermin87's instructions. Anyone else do this mod for these flashes? Which wires connect to where?

Looks like center pin (sync signal) goes to the yellow wire, and splice the "ground" wire into the black wire.

Well, I just wanted to confirm that I was able to mod my Sigma 500's.

Tip connects to yellow wire/center pin.
Sleeve connects to black wire/ground.

My pair of 500s with my 580ex:

sienarot wrote in post #4248168
It took me about 2 hours of scratching my head and double, triple, quadruple checking my wiring and soldering, changing the wire, etc... before I unknowingly changed the mode again and got it working.

Looks like this info might have eased about two hours of apprehension.

See:

http://flashzebra.com …gmamanualmode/i​ndex.shtml

It gets served up on this forum quite frequently.

Enjoy! Lon

FlashZebra wrote in post #4248240
Looks like this info might have eased about two hours of apprehension.

See:

http://flashzebra.com …gmamanualmode/i​ndex.shtml

It gets served up on this forum quite frequently.

Enjoy! Lon

You know, I actually had that bookmarked but couldn't find it for the life of me this afternoon (for a completely different reason)!

Oh well, atleast it works now!

In for this weekend. Definitely doing this.

also for ef500 supers
when you trigger with sync port change your channel from C0
this will stop optical sensor
if you let them on C0 it will be trigger optical by other flashes

sienarot wrote in post #4204307
So I'm trying to add a sync port to my Sigma 500 Supers and wasn't able to get it according to Vermin87's instructions. Anyone else do this mod for these flashes? Which wires connect to where?

My bad, but I think I said the yellow wire right? Sorry if I wasn't clear about it. I actually haven't done it yet...it's coming up on my list of things to do, but I just got an AB800 so I'm not really messing around too much with my hot-shoe flashes

man.. just placed the order for a 580EX II, so i'll be modding my 430EX soon. Are the wiring in the 430EX the same as the 580EX?

EOS mE wrote in post #4303135
man.. just placed the order for a 580EX II, so i'll be modding my 430EX soon. Are the wiring in the 430EX the same as the 580EX?

i WAS JUST GOING TO ASK IF THIS MOD APPLIES TO THE 430

forno wrote in post #4303295
i WAS JUST GOING TO ASK IF THIS MOD APPLIES TO THE 430

haha yeah i had asked a similar question before in earlier post.. but didn't really get a firm answer. Guess i'll have to open it up and ask the question again later once i receive my 580EX2

Has anyone done this to a 550ex?

The 550EX can be modified by Michael Bass Designs http://michaelbass.blo​gspot.com …c-mod.html#StartFlashMod​s

Scroll down towards the bottom of the flash mods page...

Big apologies for cross-posting (see discussion http://www.flickr.com …iscuss/72157603​175863092/ )

Am trying to mod my 580EX II:
1. Convert PC Sync port to 3.5mm mono audio jack (for Skyport Receivers, which also use this connector).
2. Allow flash to fire and command a slave while operating in Manual-Master mode (bridge a .02microfarad/50V capacitor across the ground and trigger leads)
3. Enable the sync port to trigger a Skyport radio transmitter

#3 I've not figured out yet, see build here:

www.flickr.com/photos/​15496443@N06/sets/7215​7603178806325/

Any input? Thanks!

camroncamera

Acknowlegements:
Thanks to Lon @ Flashzebra.com , Michael Bass Designs @ michaelbass.blogspot.c​om/ , and strobist bluphoto7 for figuring out the capacitor trick with the Manual-Master mode (from this thread: flickr.com/groups/stro​bist/discuss/721576022​13898559/ )

camroncamera wrote in post #4317450
The 550EX can be modified by Michael Bass Designs http://michaelbass.blo​gspot.com …c-mod.html#StartFlashMod​s

Scroll down towards the bottom of the flash mods page...

thanks, but is there no DIY for the 550?