Reply To: Use of more flashes

Forums General Questions and Comments Use of more flashes Reply To: Use of more flashes

#1343
Martyn
Keymaster

Yes it is as long as they all have the same trigger time (at this time there is only one flash trigger time).

In the Arduino sketch;

in the setup function initialise the additional pins. Here I am using A2 and A3 as digital pins. For the pin numbers use actual values or constants. Don’t use regular variables.

pinMode(16, OUTPUT); digitalWrite(16, LOW);
pinMode(17, OUTPUT); digitalWrite(17, LOW);

and then in the triggerStart function and the triggerStop function add digitalWrite commands to turn the pins on and off. You will need to add optocouplers to these pins the same as the circuit for pin D12.

void triggerStart(int trig)
{
if (trig ==1) { digitalWrite(cam_TrigShutterPin , HIGH); }
if (trig ==2) { digitalWrite(cam_TrigFocusPin, HIGH); }
if (trig ==3)
{
digitalWrite(flash_TrigPin, HIGH);
digitalWrite( 16,HIGH); // 2nd flash on pin D16 / A2
digitalWrite( 17,HIGH); // 3rd flash on pin D17 . A03
}
}

void triggerStop(int trig)
{
if (trig ==1) { digitalWrite(cam_TrigShutterPin, LOW); }
if (trig ==2) { digitalWrite(cam_TrigFocusPin, LOW); }
if (trig ==3)
{
digitalWrite(flash_TrigPin, LOW);
digitalWrite( 16,LOW);
digitalWrite( 17,LOW);
}
}

However, it would be better to use either a radio trigger or wire up more flashes and use the original flash trigger.

If the flashes are all the same model or have the same trigger voltage you can also use headphone splitters (see http://www.dropcontroller.com/getting-started). To connect 4 flashes piggy back several splitters. This is how I started. I later built a small flash distributor which has one input and 4 outputs. The circuit is basically the same as the splitters. I haven’t used this for a while and I now use the radio trigger exclusively. I have the Yongnuo RF-603 II triggers and the Yongnuo Speedlite YN560-III flashes (the flashes have radio receivers built in).

  • This reply was modified 4 years, 4 months ago by Martyn.
  • This reply was modified 4 years, 4 months ago by Martyn.
  • This reply was modified 4 years, 4 months ago by Martyn.