Cactus V2 Help

Discussion in 'Photography Beginners' Forum' started by chrisburke, Jan 16, 2009.

  1. chrisburke

    chrisburke TPF Noob!

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    well my v2's arrived today... (one transmitter, 2 receivers) they really dont come with any kind of user manual... and there really isn't a whole lot online about them... so i guess i'm hoping someone here has them and knows enough about them...

    i'm testing with one flash right now, because the batteries are dead in mu nikon strobe so I'm using the sunpak...

    batteries are in... i press the test button on the transmitter.. light flashes on the transmitter and the receiver.. which tells me they are communicating fine.. so I slap the flash on the receiver, the transmitter on my camera, adjust settings, fire... light flashes on the transmitter, light flashes on the receiver... but the flash doesnt go off...

    anyone know what the issue might be?
     
  2. dEARlEADER

    dEARlEADER TPF Noob!

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    Have you test fired the flash without the trigger?
     
  3. chrisburke

    chrisburke TPF Noob!

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    yup, it shoots fine... i wait for the light on the back of the flash to tell me its ready... press the test button (on the flash) it works fine and dandy... but when i put it on the cactus, and hit the button the the transmitter, the indicator lights on the transmitter and receiver flash, but the flash doesnt go off
     
  4. dEARlEADER

    dEARlEADER TPF Noob!

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    Is the transmitter and receiver sharing the same frequency?

    edit: try the other receiver
     
  5. chrisburke

    chrisburke TPF Noob!

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    yea they are.. i'll try the other one...

    same thing.. red light blinks on both trans and receiver.. but no flash....

    have you read anything about a compatibility issue between them and the sunpak pf30x??
     
  6. frXnz kafka

    frXnz kafka TPF Noob!

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    Are they the V2 or V2s model? And what is the trigger voltage on your flash?

    If you have a volt meter, test the receiver to make sure the circuit is closing properly when it's triggered. You could also try using the PC connector instead of the hot-shoe, or vice-versa.

    If all else fails, get some batteries in your other strobe and try that.
     
  7. chrisburke

    chrisburke TPF Noob!

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    just the v2... no idea of the voltage of my sunpak... and no voltage meter...

    sunpak doesnt have pc connector... guess i'll have to wait until tomorrow and get some batteries for my nikon strobe
     
  8. chrisburke

    chrisburke TPF Noob!

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    OK... I tried the Nikon flash.. it works fine... so I looked over the connectors on the bottom of both flashes, they are identical... [​IMG]

    except one has a metal plate and the other doesnt... i'm wondering if maybe the sunpack just isn't connecting to the metal.... is there something I can put in there to ensure its connecting... if I recall back to grade school, tinfoil lets electricity travel through it.. can I just put a small piece of that in there so that I can be sure that all the connectors are touching them metal, or will that fry it??? any electricians out there ??
     
  9. Katier

    Katier TPF Noob!

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    The Cactus is 'just' a trigger right? i.e. it's only using the center contact and the hotshoe (no TTL or anything).

    The Sunpak works ok directly on the camera in manual mode I assume?

    I would take a look that the hotshoe is making contact ok, I believe the circuit that your interested in is the center contact and the 'spring' contacts that sit in the groove either side of the flash shoe. Try to see if they appear to be in contact properly.

    Not sure what the metal plate is but as long as part of the flash's shoe ( or the afformentioned spring contacts ) is in contact with the metal of the cactus reciever it ought to work.
     
  10. chrisburke

    chrisburke TPF Noob!

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    is there a way I can tell that its touching the contact properly.. i mean, its not see through... and in the event that its not, how can I make it.. which is why i mentioned the tin foil (which is a conductor) can i just put it between the cactus and the flash to make them touch??
     
  11. Katier

    Katier TPF Noob!

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    What I would do is us a pin. Put it in the groove on the flash shoe and carefully put the cactus on. (do this at own risk ;) ) - foil may not work as it would probably get torn.
     
  12. chrisburke

    chrisburke TPF Noob!

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    so i tried something else out... i hooked my WIRED slave (nikon sc29) into the cactus receiver.. and my sunpak into the other end... still no dice... it worked fine that way with my nikon flash, but not the sunpak... i'm very confused as to why this is not working...
     

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