High speed photography trigger

Projects Programming
1

Hi,
I am trying to make one High speed photography trigger using Arduino Nano. Following the below tutorial:
" Arduino High Speed Photography Trigger - Matt Richardson, Creative Technologist "
I am looking for code to trrigger only flash. I dont want the code to switch off the power and open the shutter.
Can anyone please help me with the code please.

High speed photography trigger
2

I am looking for code to trrigger only flash.

You have code that does something. You need to post that code HERE, not expect us to access an inaccessible site.

3

Hi Paul,
Thanks for getting back. Following is the code I got from the link I provided earlier.

/* 	Audio camera trigger by Matt Richardson
	This is a basic sound-detecting camera & flash trigger for Arduino.
	Use a piezo element for the sensor (see http://www.arduino.cc/en/Tutorial/KnockSensor)
	Use opto isolators (aka optocouplers) for the flash and camera triggers
	Camera must be in BULB mode for shutter release to work
*/

#define BUTTON_PIN 5
#define CAM_TRIGGER_PIN 11
#define FLASH_TRIGGER_PIN 12
#define SENSOR_PIN 0
#define LED_PIN 10
#define STANDBY 0
#define ACTIVE 1
#define WORKLIGHT_RELAY 9
#define SENSOR_THRESHOLD 0

int mode = STANDBY;

// For best results, set flashDelayMS according to what type
// of shot you're doing. 0 seems best for balloon burst while
// 10 seems best for shattering glass. YMMV.
long flashDelayMS = 10;

void setup() {
	pinMode(BUTTON_PIN, INPUT);
	pinMode(CAM_TRIGGER_PIN, OUTPUT);
	pinMode(FLASH_TRIGGER_PIN, OUTPUT);
	pinMode(LED_PIN, OUTPUT);
	pinMode(WORKLIGHT_RELAY, OUTPUT);
	digitalWrite(LED_PIN, HIGH); 
	digitalWrite(WORKLIGHT_RELAY, HIGH); //turn the lights on
}


void loop() {
	if (digitalRead(BUTTON_PIN) == HIGH)  
	{
		mode = ACTIVE;
		digitalWrite(WORKLIGHT_RELAY, LOW); // turn the lights off
		delay(2000);  // to give time for light to go down and settle after button push
		digitalWrite(LED_PIN, LOW); // show we're ready
		digitalWrite(CAM_TRIGGER_PIN, HIGH); // open the camera shutter
	}
	if ((mode == ACTIVE) && (analogRead(SENSOR_PIN) > SENSOR_THRESHOLD)) //
	{ //If we're in ACTIVE mode and we sense a pop:
		delay(flashDelayMS);
		digitalWrite(FLASH_TRIGGER_PIN, HIGH); // fire flash
		delay(50);
		digitalWrite(FLASH_TRIGGER_PIN, LOW);
		digitalWrite(CAM_TRIGGER_PIN, LOW); // close camera shutter
		mode = STANDBY;
		digitalWrite(LED_PIN, HIGH);
		digitalWrite(WORKLIGHT_RELAY, HIGH); // turn lights back on
	}
}

This is my first project. I have gone through the rules of this forum. If I have broken them then kindly disregard my request.

If someone can help me to modify the code as per my requirement then I would really appreciate that.

The code is for ARDUINO NANO

  • It is of a sound trigger for high speed photography
  • At button push, power goes off in the room and camera shutter opens
  • then the wait is for sound. at any noise the flash fires with the delay set.
  • camera shutter get closed
  • and room power comes back

my only requirement is
after push button trigger should activate and at sound it should fire the flash. I dont need the other two options. (turning off the power and opening the camera shutter) as I can do that manually.

I didnt try to modify the code by myself. will try it now.
I thought it should be very simple for experts out here and will make my work easier.

Thanks in advance.

4

If you do not want the shutter to be opened, don't open it. The code that does that is:

		digitalWrite(CAM_TRIGGER_PIN, HIGH); // open the camera shutter

Obviously, you don't need to close the shutter, later, either.

Basically, anything that diddles with the CAM_TRIGGER_PIN is not needed.

The room lights are controlled by the WORKLIGHT_RELAY pin, so, if you don't need to do that, delete all the code that deals with that pin.

5

Thanks Paul.