Ok, I developed a data aquisition project and i finished it like a month ago. Now the guy that is hooking up the lines to the A/D pins of the controller i programmed, says that the readings is always 0.
When you hook a variable voltage to the A/D pins it works fine. I believe the problem arises because the device that he is trying to get A/D readings is in a different room.
Ok maybe it didnt come out right. What i am trying to say is, could it be that because the wires, which are carrying the voltages, are too long. Would this high capacitance cause the A/D readings to be 0? The A/D pins does work when i hook it to a variable voltage from close range. In any case, lets say this is the problem. The wire is too long. How can i remedy this problem. Because the device that we are measuring has to be far away.
The wire cannot be shortened. Is there someway to lower the capacitance somehow? Please help would be greatly appreciated as i have to go there tomarrow and fix this.