PaulSeward.com

Photos of Phones and Phonographs (occasionally)

Audio flash trigger…

I’ve spent the last couple of days building an audio flash trigger. The idea is that it fires the flash when it hears a loud noise, like a balloon popping or an egg smashing. So far, I’ve spent under £2 on the project. When I’m happy with it I’ll post some more info, build pictures and instructions etc.

It works, but it ‘s going to need a little bit of practice to get any decent results. This is the best I’ve managed so far:

egg_murder

The next stages are to:

  • Solder up what I’ve got, so I can use my plugboard for something else
  • Build a delay box to give better control over when the flash fires
  • Either buy a new flash with power controls, or modify my existing flash (Replace the LDR with a variable resistor) – a lower output from the flash should be a shorter burst of light, which will reduce the motion blur I’m getting
  • Sort out a black background cloth, and arrange some more interesting lighting!
  • Get myself a lense that’s better suited to this than the one I’ve got…

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