I bought a flash for my Canon 550D to shooting some high speed photographs.
Actually, I’m interesting to design high speed photographyÂ equipment,Â not it self. But at first Â I have to learn the photography :/
Anyway, I made a sound trigger first.
- Arduino Pro Mini v3 board,
- Flytron Light Electret Microphone with Preamplificator
- Hot shoe female plugÂ (I modified my flash stand)
#define FLASH_PIN 12
#define FLASH_GROUND 11
#define SOUND_PIN A0
#define DELAY_Trigger Payday Loan 5 // 5 miliseconds
#define THRESHHOLD 50
// make flash trigger pin output
// keep flash trigger pin low
if (analogRead(SOUND_PIN) > THRESHHOLD )
//wait before thigger
// trigger the flash
// done triggering, reset back
//sleep for 0.5 seconds to awoiding dual triggering
You can change theÂ thresholdÂ value and delay time by your requirements.
My first test with popping balloons, results areÂ promisingÂ 😀