SensorsのトピックRe: pressure sensor

pressure sensor

roshank — Tue, 03 Feb 2026 22:06:53 GMT

I am using mpxv7025 pressure sensor. but it's adc value does'nt change when pressure changes.

Re: pressure sensor

TomasVaverka — Thu, 05 Apr 2018 10:21:37 GMT

Hi Roshan,

How did you interface the MPXV7025 to your ADC? Could you please share here your schematic for a review? Did you try to measure the output voltage on the Vout pin (4) using a voltmeter?

Best regards,

Tomas

Re: pressure sensor

roshank — Sat, 07 Apr 2018 05:55:48 GMT

I connected the sensor with arduino. and read it's value at A0 channel. but the adc values doesn't change when applying pressure. it always shows 53 or 52 continuously.

Re: pressure sensor

TomasVaverka — Mon, 09 Apr 2018 07:47:10 GMT

Hi Roshan,

What is the voltage on the Vout pin with no pressure applied? Is it around 2.5V?

Best regards,

Tomas

Re: pressure sensor

roshank — Mon, 09 Apr 2018 09:08:50 GMT

Hi tomas,

When no pressure is applied, the Vout pin shows 0.2 volt. is there any problem with sensor

Regards,

Roshan

Re: pressure sensor

TomasVaverka — Tue, 10 Apr 2018 07:32:17 GMT

Hi Roshan,

Please continue in your another thread mpxv7025 sensor.

As I said, please check first your supply voltage, 3.3V is out of the operating range. With no pressure applied (no pressure difference between P1 and P2), the output voltage should be around 2.5V when Vs = 5V.

Best regards,

Tomas