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Mad strobe?

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Will_D:
That reminds me I should have a lab grade neon strobe somewhere in the house. Bought it cheap on German e-bay when I was playing with model helicopters!

Heli: €500
Strobe: €40

It was great for blade tracking!!

vtsteam:
Hey Rob, Will!  :wave: :wave:

spuddevans:
 :wave: Hi Steve


--- Quote from: vtsteam on March 18, 2016, 12:11:26 PM ---lookng at specs more closely, the solid state relay board has ssr modules rated for 100-240 V AC.

I need switches for DC at hot shoe signal levels -- as a guess 3V ?

I see some MOSFET boards available -- looking at MOSFETS like IRF520 -- would those be suitable?

--- End quote ---

Depending on the age of the flash unit, you can find up to 200+ Vdc across the trigger terminals  :zap: The newer ones use low voltage switching, around 5v IIRC.

Would an old car timing strobe work? Maybe hooked up to an old car to power it!!!


Tim

sparky961:
Way back when digital cameras were just starting to make film obselete, I was still playing with film.  I recall sitting in my darkened closet, camera on a tripod, party strobe lite going nuts, and a white pendulum swinging back and forth in front of the lens.

The comments about how I spent my free time aside, it did actually work and the pictures showed the pendulum in multiple positions in the same exposure - which was rather long.  You can probably do the same thing with a DSLR in manual mode.  Is it a safety hazard firing an arrow in complete darkness with a strobe light going?  Sounds like a fun party!

I do like the idea of the engine timing light too.  You could possibly trigger it with a microcontroller to get the timing accurate.  There might be an upper limit on recharge rate though.  An auto-relay (might be called something different) setup like the old Model T "buzz-box" could be used to excite an auto ignition coil and you could trigger your timing light off that.  You might be able to find a place to measure the frequency to make sense of the picture in post processing.

vtsteam:
Ya know I do have an old auto timing light! Sears, I think. I think it fired off an inductive clip over the plug wire didn't it? It was white light -- I don't think it was neon orange.

Anyway I sent for some 12 V high power 11 watt LED panels --ten for $19. I guess we'll see if 100 watts of LEDs is enough. I heard that you could up the current if it was low duty cycle like this is, but I have a feeling it might work without.

I also came across a cool reference to spinning a black disk 600 rpm with a slot in it in front of the camera lens for a high speed multiple shutter. Then you just need a lot of light on the subject. That would solve the black cabinet problem because outdoors has a lot of light, and you could hand fire the bow. That might make the most sense. But the Arduino and LEDS seems like a fun experiment anyway. I already have the Arduino.

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