water flow sensor yfs201 is not getting signal from atmega328 pu pin A0,

 

Hi a,
We need more information, diagram, program code etc...
E

 

There is no PORT A on the ATMEGA328. Pin 2 is D0.

edit: If you are using pin 2 be sure it is configured as an output in Data Direction Register D.

 

water flow sensor yfs201 is not getting signal from atmega328 pu pin A0,

RDIONO, N
The signal on Analog pin 0 should be from the water flow Sensor to the ATMega328, not the other way round! Please show a schematic diagram and your coding to help us understand your problem.