Can change of analogue voltage change the output pin and turn pins On/OFF?

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i'm beginning learn arduino programming. , i'm wanting move on project. so, i'm hoping can help, in way.

can please tell me whether possible use potentiometer vary analoge voltage pin a0, , produce result such when voltage rises there change in output pin. so, instance, input voltage 0.5v,  d4 pin turns on @ 5v, when voltage reaches 1v d4 goes 0v d5 turns on @ 5v, when 1.5v reached d5 goes 0v , d6 goes 5v. thank you.

of course.
just read voltage on analog pin , set digital pins accordingly. need bunch of if/then statements that.


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