analog input pin voltage problem

hi all,

please anybody faced problem with analog input pin .

i am having problem that even if i don't give any analog input , the arduino due board shows some reading

which is supposed to be zero when no analog input is there

please help me guys

regards

deepak

What impedance is your "no analog input"?

It is same for me. I ground Analog Inputs pin and I get 2048 with 12 bits or 512 with 10 bits

Which version of the IDE?

deepak wrote:

the arduino due board shows some reading which is supposed to be zero when no analog input is there

what is some reading, 0 or 1 or 2 or 3 or is it higher like 100 or 300, you don't provide enough clear information about your problem?

How is your Arduino connected to analogs?
Do you have long wires?
Is it a noisy environment?

So many possibilities, so be very clear about your setup, or we can only make a assumptions.


Paul