Short a circuit on command?

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hey everyone,

it's been while since last did electronics related, , way before age of arduino boards. i'm designing requires short in circuit upon command in order trigger camera flash. there way safely short circuit fire flash without damaging arduino uno board? if needed, can elaborate little more once home, , can include photos.

thanks in advanced!

with kind regards,

corbin

you can use relay supply dry contact output.
the arduino picks relay circuit needed.

.


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