I get the following output by simply jumping any analog input to ground:
Test: 127
Test: 15
Test: 1023
Test: 1023
Test: 255
Test: 1023
Test: 0
Test: 127
Test: 255
Test: 1023
Test: 127
Test: 0
Test: 0
Test: 255
Test: 63
Test: 0
Test: 255
Test: 1023
Test: 63
Test: 127
Test: 63
Test: 255
Test: 0
Test: 255
Test: 127
Test: 7
Test: 63
namespace Netduino_Test_1 { public class Program { public static void Main() { // write your code here AnalogInput apin0 = new AnalogInput(Pins.GPIO_PIN_A0); bool buttonstate = false; int test = 0; while (true) { Thread.Sleep(250); test = apin0.Read(); Debug.Print("Test: " + test); } } } }