Measuring the output voltage of a Buck converter with Arduino

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hello !

i realized buck converter circuit, every time vary input voltage , measure output voltage voltmeter . step worked well. indeed, every time vary input voltage found variation in output voltage.

but when used arduio measure output voltage found problem. vary input voltage between 0 v , 12 v find 0 v or 12 v.

how measure converter buck output voltage sufficient precision?



with kindest regards,

besma lassoued

quote
but when used arduio measure output voltage found problem. vary input voltage between 0 v , 12 v find 0 v or 12 v.
 
this invalid question.

not sure asking. assume read specs arduino analog input , realize cannot measure voltage greater 5v analog input. in view of , please restate question.


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