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Bevanj

El-cheepo Nauticam Optical trigger

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Hi All,

I know that I'm relatively new here, but I thought I'd check if anyone is interested in a super simple LED trigger for their CANON Nauticam housing?

I set out to design a board for a simple optical trigger to fit to my NA-5DSR housing powered by two CR1632 batteries.

If there is interest, I could knock up a few more. They may make a good backup for those of you shooting with more expensive optical triggers.

Since it's very simple, it only does 1st curtain sync, and manual strobe adjustment.

It has no trouble triggering my new Z-330s (Thanks Peter Mooney!). I'll try and see if I can test it with a friends YS-D2s sometime in the next week or two. Hopefully it should be fine - I'm using 15 degree beam angle CREE LEDs, and they're incredibly bright.

With the board installed, there are two 10mm tall spacers between it and the housing with longer M3 screws for mounting. I've got some proper stainless ones on the way.

I'm not a business, I'm not commercial. I'll simply be making these on my desk in the spare room if there is interest. Hopefully this doesn't violate the Ts&Cs of the classifieds forum.

Bevan

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Edited by Bevanj

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Then again, this would probably work with Nikon too, if there is someone out there that can ring out their Nauticam supplied Nikon hot shoe cable for me with a multimeter.

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m4/3 user here (so no need for a SLR trigger :D ), but that is some great design :)

You might want to perhaps share it in the "Lights, Strobes, and Lighting Technique" - in classifieds it will disappear pretty quickly off the "front" page... Also, if you are trying to sell it, perhaps a guidance price would be useful for all the folks out there.

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Good idea, makar0n (love that name!). I'll move it.....

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Done!

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Hi Bevanj,

 

I am very interested in your trigger. I've been trying to build one myself but unsuccessfully so far. I have a Nauticam NA-7D housing (Canon 7D) and have built a similar circuit. Although I am using VERY strong LEDs I cannot trigger the strobes through the prisms. I can trigger them fine if I shine the LEDs directly at the optical fibre cables, but not through the prisms inside the housing. I have cleaned them thoroughly but they still don't work.

 

I noticed that your LEDs go straight into the holes where my prisms are fitted. Have you modified your housing or does it have no prisms?

 

Many thanks,

John

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Hi, I like this project. I have a Nauticam NA-D500 housing and Nikon D500 (also Nikon D800 and D7100) cameras. Please tell me how to go about the multimeter measurements. I can be contacted here or via my email.

Cheers!

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Kraken,

So long as it buzzes out as follows from the Nikon hotshoe connector to the pins on the round micro-din connector, it should be fine. I can't see the pinouts being any different, as they connect to the same bulkheads. The ground is the side contact on the main hotshoe metal bit, the bit CTR is the pin that contacts the center pin in the hotshoe.

I can probably make these for anyone who wants one in the realm of $45USD shipped worldwide, but will need to get some more PCBs cut first.

 

Bevan

post-67761-0-23194400-1539117576_thumb.jpg

Edited by Bevanj

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Scubaslr,

Yes, the prism is removed from my housing. I've attached some photos of it. It's a piece of cake to remove - 3 hex screws, and comes out in two pieces - there's the prism, and a prism mount.

One screw holds the prism onto the prism mount, and it has some feet that latch in at the top. The prism mount is held onto the aluminium housing by 2 screws.

For anyone else going the DIY route - the screws are M3.

Hope it helps.

Bevan

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Edited by Bevanj

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Thanks for the reply Bevan.

 

My housing doesnt have a trapezoidal prism like yours but two cylindrical ones that sit tightly in the ports where you fit your LEDs (see attached photo). I dont know if they are removable, hope that somebody who knows will post a reply.post-83046-0-89161200-1539150196_thumb.jpeg

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Hi Bevanj:

My housIng is the Nauticam NA-D500. I measured the conductance between the hot shoe metal plate and the 4 pins, and there was none. However, the pin sort of in the middle, #3 counting from the left, is positive for 5.8V

The bulkheads have the LEDs built into them and appear to be hardwired to the circuit board.. Attached are two photos, please let me know if you need more information.

 

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post-47296-0-47907300-1539191239_thumb.jpg

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Kraken,
I meant the OEM Nauticam Nikon hot shoe cable that links it with a tiny round connector to their OEM Nikonos connectors. That new fancy TTL board which they come with is different.
The one I was meaning for a continuity check looks like this...
https://www.backscatter.com/Nauticam-Nikon-Hotshoe-Plug-to-Single-Nikonos-Conn

Scubaslr,
I take it that is the NA-7D MK1? You could ask a Nauticam dealer if those tiny integrated prisms are removable?

Bevan

Edited by Bevanj

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Apparently the cylindrical prisms are not removable. Nauticam sells replacement bulkheads without them, they cost $100 each.

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Hi All,

 

I know that I'm relatively new here, but I thought I'd check if anyone is interested in a super simple LED trigger for their CANON Nauticam housing?

 

I set out to design a board for a simple optical trigger to fit to my NA-5DSR housing powered by two CR1632 batteries.

 

If there is interest, I could knock up a few more. They may make a good backup for those of you shooting with more expensive optical triggers.

 

Since it's very simple, it only does 1st curtain sync, and manual strobe adjustment.

 

It has no trouble triggering my new Z-330s (Thanks Peter Mooney!). I'll try and see if I can test it with a friends YS-D2s sometime in the next week or two. Hopefully it should be fine - I'm using 15 degree beam angle CREE LEDs, and they're incredibly bright.

 

With the board installed, there are two 10mm tall spacers between it and the housing with longer M3 screws for mounting. I've got some proper stainless ones on the way.

 

I'm not a business, I'm not commercial. I'll simply be making these on my desk in the spare room if there is interest. Hopefully this doesn't violate the Ts&Cs of the classifieds forum.

 

Bevan

That's really excellent, nice job! Thanks for sharing.

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I was eventually able to mount @Bevanj's flash trigger in my NA-7D (Mark I) housing. The cylindrical prisms cannot be removed from the bulkheads to allow the LED's in, but if you get the LED's to line up at exactly the right angle it works like a charm. Some BluTack came in handy...

 

Thank you @Bevanj!

 

post-83046-0-98258900-1541164951_thumb.jpg

IMG_2238.jpg?dl=0

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Well,

I changed the design. Now, no matter how long you've got the shutter open for, the LEDs will pulse ~2 milliseconds regardless, instead of staying on for the entire shutter duration. It also has incredibly low current draw when in storage still. The result is that the batteries should last over a hundred years in storage, or over a million shots. I suspect the batteries will corrode before they go flat.

I can still make them for $45USD. Right now I've got 3 assembled and sitting in front of me.

 

Cheers,
Bevan

I've also got another design in the works which should fit housings with a smaller prism area.

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Very cool!

 

You mention, it only works for 1st curtain? How does rear curtain change this? I would have assumed (I'm guessing incorrectly) that rear is just at the end of the exposure, and that as far as the flash is concerned, exactly the same as front.

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g3cko, yes. 1st curtain only. Rear curtain is as you say - right at the end of the exposure. Canon have locked things down - you can only do second curtain if the camera detects a genuine Canon speedlight on the camera. I'm in the middle of reverse engineering the Canon ETTL2 protocol. I'd say I'm 95% of the way there.

Bevan

Edited by Bevanj

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Nice work Bevan! Is it possible to make sony version?

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I believe it should work with Sony. Next time I catch up with a friend who has an A7RII, I'll see if he minds if I try it on his camera.

Oh, and I tried the V5.6 board shown above with the YSD2 - they fire just fine! :D

Bevan

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Ahh, the rear curtain thing is Cannon specific? Any idea how Nikon does things? I would need to make my own (or buy) the hot shoe adapter and also double check that my Subal has room to fit that, but it is something I've wanted for backup (or primary, and keep the electrical as backup)

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I should point out that if you are wanting to use this LED trigger (or any LED trigger for that matter), you NEED high quality multi strand fiber cables. Single strand wont allow enough light transmission to trigger strobes.

 

With a bright flash from a cameras intetnal flash tube, you can get away with higher losses in the fibre from single strand cables and still have enough light left at the far end to trigger a strobe.

 

With a relayively weaker pulse from an LED, the cables need to be as efficient at passing light from one end to the other as possible.

 

Personally, I'm using the howshot brand multicore ones.

 

Bevan

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Hi Bevan,

 

Great job! Any update for the compatibility with Sony version? Would like to have one if it works fine for Sony:B):

I believe it should work with Sony. Next time I catch up with a friend who has an A7RII, I'll see if he minds if I try it on his camera.

Oh, and I tried the V5.6 board shown above with the YSD2 - they fire just fine! :D

Bevan

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