Does the GPIO input need exact values? - Raspberry Pi Forums

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i have question gpio input ports. in statement on raspberry page said low = 0v , high = 3.3v. motor feedback of 12v low , 24v high. if reduce them 0.3v low 3v high.

question: raspberry send high / low values if in vicinity of 0v or 3.3v or have reach values exactly?

help!

obviously gpio input never work if values needed exact, yes need fall range both high , low values, "grey" invalid range in-between.
afaik logic high above 2 volt, , logic low needs below 0.8v.
don't input voltage higher 3.5v (3.3v plus safe tolerance) or chip may damaged due "latch up"!
inputs not 5v tolerant!!!!


raspberrypi



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