I am fresh to arduino and electronics, and now i need to get pressure data from the MPX2102.
The typical voltage output is 0 - 40mV, and it is a way far from analog input 0 - 5V on arduino.
Since I am not knowing much on electronics, I would like to ask:
- how can I measure the pressure, and
- the conversion from analog read voltage to pressure.
Is that I must use an amplifier of gain 125 to let me getting correct data? If yes, may someone please teach me how to make it? Because although I know there is something called op amp, but dont know how to use it or connect it in daily practice.
One more thing, there are pins of V+ , V- , what are their meanings?
Thanks a lot!
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