analog input pin voltage problem

Hardware Arduino Due
1

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

2

What impedance is your "no analog input"?

3

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

4

Which version of the IDE?

5

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