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DIY – Remote flash trigger with opto-isolator
 
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sundeep


Joined: 05 Jul 2008
Posts: 106
Location: http://fotohobbist.com/
Post Posted: Fri May 04, 2012 12:16 pm     Reply with quote

Wanting to get a old Vivitar flash to sync with the other flash / strobes, I put together this simple DIY for a Remote flash trigger with opto-isolator cause the old flash probably had a trigger voltage which would blow out modern cameras or triggering devices

http://fotohobbist.com/blog/2012/03/25/use-your-old-flashes-using-this-diy-light-trigger-with-opto-isolator-part-i/
mauijon


Joined: 02 Mar 2005
Posts: 4284
Location: Maui, Hawaii
Post Posted: Sun May 06, 2012 9:04 pm     Reply with quote

What/how do you adjust the 47Kohm pot to?
sundeep


Joined: 05 Jul 2008
Posts: 106
Location: http://fotohobbist.com/
Post Posted: Sun May 06, 2012 9:30 pm     Reply with quote

mauijon wrote:
What/how do you adjust the 47Kohm pot to?


I put it there to adjust for the ambient light / master flash , i.e. if the flash is not getting triggered than dialing down the pot would help. Adjustment is hit and trial.
 
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