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how to make a backup beeper with a pitop

 a can someone please help?

im trying to make a backup beeper with lights

it would have a ultrasonic rangefinder, and if you got closer, a beeper would go 

beep, beep, beep, beep,      and show a yellow led

if you got even closer, abeeper would go

beeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeep, and show a red led

if you were far enough away, it would go silent, and show a green led.

please, help.

(also on a pi-topPROTO+)

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