One logical output(digital pin) to drive 8 relay board with a small delay

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hi all,
i'm wondering recommend driving 8 relays should close simultaneously small delay 1 after other?

like in diagram
 

my guess shift register 74hc595 there maybe simpler way achieve this?
thanks

looks shift register me.  i'm not sure how think simpler unless want pull 8 lines arduino itself. 


Arduino Forum > Using Arduino > LEDs and Multiplexing > One logical output(digital pin) to drive 8 relay board with a small delay


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