Hi,
the program should be something like this:
#define anain1 0 // use pin0 as analog input 1
#define anain2 1 // use pin1 as analog input 2
#define ledpin 13 // pin13 is digital output
#define hyst 5 // use hysteresis of 5
void setup()
{
pinMode(digout,OUTPUT); // make pin3 an output
}
void loop()
{
int ain1 = analogRead(anain1);
int ain2 = analogRead(anain2);
// if analog input 1 is higher than analog input 2, set output
if (ain1 > ain2) digitalWrite(ledpin,HIGH);
if (ain1 <= ain2-hyst) digtalWrite(ledpin,LOW);
}
This is a very easy example. It is better to use a mean value of the analog inputs for comparison.
Good luck
Mike