# Because the program is collected in this way: Acquisition, when the PA0 port pulled low close to 0V.As the ADC data acquisition needs current into the PA0 port will have a voltage drop.  

# Because the program is collected in this way: Acquisition, when the PA0 port pulled low close to 0V.As the ADC data acquisition needs current into the PA0 port will have a voltage drop.  

# The example sensor length is only 50cm so the maximum of PA0 output is <span CLASS=bluetext>1.5v</span>.Acquisition：<span CLASS=redtext>PA1 = 0v, PA0 = [10k / (10k + 10k)] * 3.0v = 1.5v</span> (10k divider resistance on LSN50 and 10k resistance on oil sensor.)  

# The example sensor length is only 50cm so the maximum of PA0 output is <span CLASS=bluetext>1.5v</span>.Acquisition：<span CLASS=redtext>PA1 = 0v, PA0 = [10k / (10k + 10k)] * 3.0v = 1.5v</span> (10k divider resistance on LSN50 and 10k resistance on oil sensor.)