MPS20N0040D-D SPHYGMOMANOMETER DIP AIR PRESSURE SENSOR MODULE (0-40KPA, DIP-6)

Getting started with the MPS20N0040D-D Sphygmomanometer Pressure Sensor 0-40kPa DIP-6

Hardware required

• 1x MPS20N0040D-D Pressure Sensor
• 2x 10k Resistors
• 2x 47k Resistors
• 1x 1k Resistors
• 1x 2.2k Resistors
• 1x LM358 Op-Amp
• 1x Arduino UNO R3

Connecting the Hardware

Connect MPS20N0040D-D Pressure Sensor to arduino as shown below

Upload the sample sketch

const int analogInPin = A0; // Analog input pin that the potentiometer is attached to

int sensorValue = 0; // value read from the pressure sensor via the amplifier stage
float outputValue = 0; // value output to the Serial port and LCD display

void setup()
{
// initialize serial communications at 9600 bps:
Serial.begin(9600);
}

void loop()
{
// read the analog in value:
sensorValue = analogRead(analogInPin);
outputValue = map(sensorValue, 491, 1023, 0, 100); //The zero value of sensor is around 491

// print the results to the serial monitor:
Serial.print(“sensor = ” );
Serial.print(sensorValue);
Serial.print(“\toutput = “);
Serial.println(outputValue);

// wait 500 milliseconds before the next loop
// for the analog-to-digital converter to settle
// after the last reading:
delay(100);
}

Testing the circuit

open your serial monitor by clicking on the icon in the right top corner(like search icon).

Before to apply the pressure