I'm using an op amp to amplify the input of a pressure sensor from milli volt to volts using with arduino. Both the amp and the sensor are externally powered using a DC power supply. I'm trying to read this analog signal off the arduino using Matlab Simulink, But I am getting a lot of noise while trying to read. I'm not sure what is causing the error, any suggestions?
I would need to read the voltage value so that I can make a lookup table from it ( relating corresponding voltage values to pressure values)