Thanks donpetru, I will explore that on my next project which is similar. JDR04

 

Can somebody tell me what is meant by"end stackable". The datasheet for the optocoupler says they are "end stackable." What does this mean?

Lastly, how would I add a second optocoupler so I could aslo fire my camera? Would I need to reduce the value of the resistor connected to LM324 PIN1?

Could I connect pin 1 of the second optocoupler to pin 1 of the first optocoupler and ground in the normal manner. Would I have to reduce the value of the resister attached to LM324 PIN 1?

Thanks a lot to all the kind folk on this forum in helping me with this project and imparting their knoweledge. -JDR04