WeMos (6) BMP180 I2C気圧温度表示

Specification

  • Pressure sensing range: 300-1100 hPa (9000m to -500m above sea level)
  • Up to 0.03hPa / 0.25m resolution
  • -40 to +85°C operational range, +-2°C temperature accuracy

Wiring

Make the following connections

  • GND <-> GND
  • 3V3 <-> VIN (or 3Vo)
  • D1 <-> SCL
  • D2 <-> SDA

センサーをライブラリ追加

BMP180センサーを利用する

ライブラリからBMP085を検索して、追加してください

スクリーンショット 2017-09-08 15.39.45

単体プログラム

ただシリアルモニタに表示するだけのプログラム

#include <Wire.h>
#include <Adafruit_BMP085.h>
 
Adafruit_BMP085 bmp;
 
void setup() 
{
  Serial.begin(9600);
  //Wire.begin (4, 5);
  if (!bmp.begin()) 
  {
    Serial.println("Could not find BMP180 or BMP085 sensor at 0x77");
    while (1) {}
  }
}
 
void loop() 
{
  Serial.print("Temperature = ");
  Serial.print(bmp.readTemperature());
  Serial.println(" Celsius");
 
  Serial.print("Pressure = ");
  Serial.print(bmp.readPressure());
  Serial.println(" Pascal");
 
 
  Serial.println();
  delay(5000);
}

1602に表示するプログラム

/*
 * 
 */
#include <Wire.h> 
#include <Adafruit_BMP085.h>
#include <LiquidCrystal_I2C.h>

Adafruit_BMP085 bmp;

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup()
{
  lcd.begin(0,2);  // sda=GPIO_0, scl=GPIO_2

  lcd.init();

  // Turn on the backlight.
  lcd.backlight();
    
  // Print a message to the LCD.
  lcd.print("hello, world!");

  if (!bmp.begin()) 
  {
    Serial.println("Could not find BMP180 or BMP085 sensor at 0x77");
    while (1) {}
  }
}

void loop()
{

  lcd.setCursor(0, 0);
  lcd.print("Temp = ");
  lcd.print(bmp.readTemperature());
  lcd.println(" Celsius");
     
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  lcd.print("Pres = ");
  lcd.print(bmp.readPressure());
  lcd.print(" Pascal ");
  lcd.print(millis() / 1000);
}

表示画面

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