Hello everyone, I'm trying to use an ultrasonic sensor to control an LED using the constrain() and map() functions. But it's not working. Some help would be very appreciated. Thank you! The goal is to limit the inputs between 2 and 22 using the constrain() function. Code: // Arduino pin numbers f…

Constrain() ultrasonic inputs to control LED

Paul_KD7HB November 7, 2021, 4:11am 2

You have not yet received a value for pingEcho, why are you constraining it or mapping it.

Paul

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