Hi All,
I'm a rank amateur at electronics (although I did A Level physics 20 years ago). I'm attempting to build a camera flash sound trigger similar to this http://hiviz.com/tools/triggers/makeown.htm#st but I've not got an SCR (yet).
The two circuits I've cobbled together work, but only if I rap the piezo disc with a pen or something. The flash does not fire if I clap my hands, etc.
The version with the op amp seems to be more sensitive but it's hard to tell!
Can someone give me some tips to increase the sound sensitivity please or should I just wait for the SCR to arrive?
Thanks in advance,
Nic
I'm a rank amateur at electronics (although I did A Level physics 20 years ago). I'm attempting to build a camera flash sound trigger similar to this http://hiviz.com/tools/triggers/makeown.htm#st but I've not got an SCR (yet).
The two circuits I've cobbled together work, but only if I rap the piezo disc with a pen or something. The flash does not fire if I clap my hands, etc.
The version with the op amp seems to be more sensitive but it's hard to tell!
Can someone give me some tips to increase the sound sensitivity please or should I just wait for the SCR to arrive?
Thanks in advance,
Nic
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