MPS20N0040D

[4211421036]

MPS20N0040D

Scientific Background

1. Pressure Measurement Principle

The sensor uses MEMS piezoresistive technology. The output voltage ($V_{out}$) relates to applied pressure ($P$) by:

$$ V_{out} = V_{bias} + S \cdot P + \epsilon(T) $$

Where:

• $S$ = Sensitivity (-0.21%FS/°C, datasheet)
• $\epsilon(T)$ = Temperature error (±0.08%FS/°C)

2. Venturi Flow Equation

Flow rate ($Q$) is calculated using Bernoulli's principle:

$$ Q = A_1 \sqrt{\frac{2\Delta P}{\rho(1-\beta^4)}} $$

Where:

• $\beta = \frac{d_2}{d_1}$ (diameter ratio)
• $\rho$ = Fluid density (kg/m³)

---

System Diagram

graph LR
  A[MPS20N0040D-S] -->|Differential mV| B[HX710 ADC]
  B -->|24-bit Data| C[Arduino]
  C --> D[Serial Monitor]
  C --> E[Control System]

Loading

Wiring Diagram

The following is a description of the image:

1. The sensor, designated as MPS20N0040D-S, is connected to
   • Pin 1, identified as V+. It is to be connected to a 5V Microcontroller
   • Pin 2 (GND) is to be connected to: Connects to GND Microcontroller
   • Pin 3 (Vout+): Connects to IN+ HX710
   • Pin 4 (Vout-): Connects to IN- HX710

---

Installation

1. Download the ZIP and install via Arduino IDE:
   Sketch > Include Library > Add .ZIP Library
2. Or clone to Arduino libraries folder:

   git clone https://github.com/4211421036/mps20n0040d-sensor.git

---

Function Documentation

Function	Parameters	Description
begin()	-	Initializes sensor and ADC pins
readPressure()	-	Returns pressure in Pascals (Pa)
calculateFlowRate()	pressureDiff, density (optional)	Computes flow rate in m³/s

---

Example Code

#include <MPS20N0040D.h>

// Pin definition
#define PD_SCK 3
#define DOUT 4

MPS20N0040D sensor(PD_SCK, DOUT);

void setup() {
  Serial.begin(9600);
  sensor.begin();
}

void loop() {
  float pressure = sensor.readPressure();
  float flowRate = sensor.calculateFlowRate(pressure, 1000.0); // Water density
  
  Serial.print("Pressure: "); 
  Serial.print(pressure); 
  Serial.println(" Pa");
  
  Serial.print("Flow Rate: "); 
  Serial.print(flowRate * 1000, 2); // Convert to L/s
  Serial.println(" L/s");
  
  delay(1000);
}

---

Calibration Procedure

1. Apply known pressures (0-40kPa) using a dead weight tester
2. Record ADC outputs
3. Update these constants in MPS20N0040D.cpp:

   const float V_REF = 5.0;    // Measured reference voltage
   const float FS_OUTPUT = 0.1; // Verified full-scale output

---

Technical Specifications

Parameter	Value	Unit
Pressure Range	0-40	kPa
Accuracy	±0.25	% FS
Operating Voltage	2.6-5.5	V
Output Data Rate	10/80	SPS

---

Author

1. Ana Maulida
2. GALIH RIDHO UTOMO

---

[github-actions]

Hi @4211421036.
Your pull request has been detected as something other than a Library Manager submission.
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[github-actions]

A problem was found with your submission https://github.com/4211421036/YFS201

❌ ERROR: Submission URL is already in the Library Manager index.

[github-actions]

❌ ERROR: Arduino Lint found errors with https://github.com/4211421036/mps20n0040d:

Linting library in mps20n0040d
ERROR: Library name MPS20N0040D not found in the Library Manager index. Library names are not allowed to change after   
       being added to the index.                                                                                        
       See: https://github.com/arduino/library-registry/blob/main/FAQ.md#how-can-i-change-a-librarys-name               
       (Rule LP018)                                                                                                     

Linter results for project: 1 ERRORS, 0 WARNINGS

-------------------

Linting sketch in mps20n0040d/examples/FlowRate

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d/examples/Pipe/DoublePipe

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d/examples/Pipe/SinglePipe

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d/examples/Pressure

Linter results for project: no errors or warnings

-------------------

Linter results for projects: 1 ERRORS, 0 WARNINGS

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Hi @4211421036.
Your pull request has been detected as something other than a Library Manager submission.
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If you intended to submit a library, please check the instructions and update your pull request if necessary:
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[github-actions]

A problem was found with your submission https://github.com/4211421036/YFS201

❌ ERROR: Submission URL is already in the Library Manager index.

[github-actions]

❌ ERROR: Arduino Lint found errors with https://github.com/4211421036/mps20n0040d-arduino:

Linting library in mps20n0040d-arduino
ERROR: Library name MPS20N0040D not found in the Library Manager index. Library names are not allowed to change after   
       being added to the index.                                                                                        
       See: https://github.com/arduino/library-registry/blob/main/FAQ.md#how-can-i-change-a-librarys-name               
       (Rule LP018)                                                                                                     

Linter results for project: 1 ERRORS, 0 WARNINGS

-------------------

Linting sketch in mps20n0040d-arduino/examples/FlowRate

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d-arduino/examples/Pipe/DoublePipe

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d-arduino/examples/Pipe/SinglePipe

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d-arduino/examples/Pressure

Linter results for project: no errors or warnings

-------------------

Linter results for projects: 1 ERRORS, 0 WARNINGS

[github-actions]

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Please resolve the error(s) mentioned in the previous comment.

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[github-actions]

Hi @4211421036.
Your pull request has been detected as something other than a Library Manager submission.
A maintainer will need to review it before it can be merged.

If you intended to submit a library, please check the instructions and update your pull request if necessary:
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[github-actions]

❌ ERROR: Arduino Lint found errors with https://github.com/4211421036/mps20n0040d-arduino:

Linting library in mps20n0040d-arduino
ERROR: Library name MPS20N0040D not found in the Library Manager index. Library names are not allowed to change after   
       being added to the index.                                                                                        
       See: https://github.com/arduino/library-registry/blob/main/FAQ.md#how-can-i-change-a-librarys-name               
       (Rule LP018)                                                                                                     

Linter results for project: 1 ERRORS, 0 WARNINGS

-------------------

Linting sketch in mps20n0040d-arduino/examples/FlowRate

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d-arduino/examples/Pipe/DoublePipe

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d-arduino/examples/Pipe/SinglePipe

Linter results for project: no errors or warnings

-------------------

Linting sketch in mps20n0040d-arduino/examples/Pressure

Linter results for project: no errors or warnings

-------------------

Linter results for projects: 1 ERRORS, 0 WARNINGS

[github-actions]

Thanks for your interest in contributing to the Arduino Library Manager index @4211421036
Please resolve the error(s) mentioned in the previous comment.

After resolving the issue, trigger this check again by doing one of the following:

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[per1234]

Hello @4211421036. Due to you having established a pattern of irresponsible behavior in your activity in this repository, your Arduino Library Manager Registry privileges have been revoked:

• Update repositories.txt #5954
• FNN #5955
• fnn #5956
• gsr #5959
• IoT #5960 (comment)
• GitHub IoT #5984 (review)
• YFS201 Sensor #6015 (comment)
• MPS20N0040D #6179 (review)

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