
1. Introduction
The BMP180 barometric pressure sensor is a device or apparatus that can sense gas pressure and convert it into usable output signals according to a certain regularity. Its basic function is to accurately measure the pressure value of the gas and convert the pressure signal into electrical signals and other signal forms that are convenient for processing and transmission, providing a basis for subsequent display, control, and data processing.
2. Schematic
Pressure sensor - HS-S45P schematicClick to view
Module Parameters
Pin Name | description |
|---|---|
G | GND (Negative Power Input) |
V | VCC (Positive Power Input) |
L | Clock Signal Communication Pin |
A | Bidirectional Data Communication Pin |
Supply voltage: 3.3V-5V
Connection method: PH2.0 4P terminal wire
Installation method: screw
4, Circuit Board Size

5 of Arduino IDE example program
Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Arduino IDE Library Download and Import Tutorial:Click to view
Example program (UNO development board):
#include <Wire.h>
#include <Adafruit_BMP085.h>
Adafruit_BMP085 BMP;
void setup(){
Serial.begin(9600);
if (!BMP.begin()) {
Serial.println("Could not find a valid BMP085/BMP180 sensor, check wiring!");
while (true) {
}
}
}
void loop(){
Serial.print("Temperature = ");
Serial.print(BMP.readTemperature());
Serial.println(" โ");
Serial.print("Pressure = ");
Serial.print(BMP.readPressure());
Serial.println(" Pa");
Serial.print("Approx altitude = ");
Serial.print(BMP.readAltitude(101325));
Serial.println(" m");
Serial.println("");
delay(1000);
}6, ESP32 Python Example (for Mixly IDE/Misashi)
Choose the development board Python ESP32 [ESP32 Generic(4MB)] and upload in code mode
Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Download and import tutorial for Mixly IDE ESP32 library:Click to view
Example program (ESP32-Python):
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ๆดๆฐ...7, Mixly example program (graphical language)
Example Program (UNO Development Board):Click to download
Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Download and import tutorial of Mixly IDE Arduino library:Click to view

Example Program (ESP32 Development Board):Click to download
Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Download and import tutorial for Mixly IDE ESP32 library:Click to view
8. Setting up the Test Environment
Arduino UNO Test Environment Setup
Prepare Components:
UNO-R3 Development Board *1
UNO-R3 Expansion Board *1
USB TYPE-C DATA CABLE *1
HS-S45P pressure sensor*1
PH2.0 4P Double Head Terminal Line *1
Circuit wiring diagram:

ESP32 Test Environment Setup
Prepare Components:Pending update...
Circuit wiring diagram:Pending update...
9, Video tutorial
Arduino UNO video tutorial:Click to view
ESP32 Python Video Tutorial:Click to view
10, Test results
Arduino UNO test results:
Enter the code, and then the computer serial port displays temperature and atmospheric pressure.

ESP32 Test Results:
Pending update...