Analog Input Help

Hi all,

I'm having some trouble with getting my Arduino Duemilanove to correctly read and print the input I'm giving it. My input is a resistive force sensor which lowers resistance as the applied pressure increases. I have checked that my sensor works by measuring the voltage with an multimeter. I do see changes in the output voltage as I apply more pressure, however this is not reflected when I hook the sensor to the arduino board. I'm using the AnalogReadSerial example sketch so I don't think my code is the problem. I'm fairly new with Arduino, so any insight on working with analog input (general or specific) will be greatly appreciated. Thank you!

L.

Have you added a pull up resistor, you need one.

Indeed a resistive sensor connected just to an analog input and ground will just pull it to ground and you'll read 0.