* [[File:yuanlitu_1.png|600px|none|thumb|]]  

* [[File:yuanlitu_1.png|600px|none|thumb|]]  

* The oil sensor is a structure with a linear sliding resistance that shows the purpose of oil (liquid) position by sliding with different resistance values.

* The oil sensor is a structure with a linear sliding resistance that shows the purpose of oil (liquid) position by sliding with different resistance values.

* This time using a length of <span CLASS=bluetext>50cm</span> oil sensor, slide the slider in the top <span CLASS=bluetext>10k</span> and  sliding down to 0.[[File:Schematic_2.png|600px|none|thumb|]]  

* This time using a length of <span CLASS=redtext>50cm</span> oil sensor, slide the slider in the top <span CLASS=redtext>10k</span> and  sliding down to 0.[[File:Schematic_2.png|600px|none|thumb|]]  

* 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.