How to Handle negative signal with Arduino Uno

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musabfarooq

Joined Mar 22, 2017
38
I am currently working on a project in which I have to read 5V pk-pk analog signal with arduino uno ADC. Since Arduino Uno ADC input range is 0-5V, what should I do to read the signal with Arduino Uno ADC and recover it afterwards.
 

btebo

Joined Jul 7, 2017
100
ericgibbs,

Pretty neat. I simulated it in MultiSim and got same results - but without the 1meg resistor... With that resistor, output was 0V. What is the purpose of it?
 
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