BMP085 Barometric Digital Pressure Sensor Module TYWu

 Module Picture

 Features Pressure range: 300 - 1100hPa (9000 meters above sea level to -500 m). Power supply voltage: 3V-5V. Low power consumption: 5μA in standard mode. Precision: low-power mode, the resolution of 0.06hPa (0.5 m). hPa 百帕 1百帕=1毫巴

Features High linear mode with a resolution of 0.03hPa (0.25 m). Means of communication: IIC communication protocol. With temperature output. Response time: 7.5ms. Temperature compensation.

Schematic Schematic

Atmospheric Pressure vs. Altitude Diagram

Atmospheric Pressure vs. Altitude At low altitudes above the sea level, the pressure decreases by about 1.2 kPa for every 100 meters. Sea level standard atmospheric pressure101325 Pa

Arduino Connect this module with Arduino Arduino GND -> BMP085 GND Arduino 3.3V -> BMP085 VCC Arduino A4 (SDA) -> BMP085 SDA Arduino A5 (SCL) -> BMP085 SCL

Arduino Connection

Arduino Code : void setup() { Serial.begin(9600); Wire.begin(); bmp085Calibration(); }

Arduino void loop() { temperature = bmp085GetTemperature(bmp085ReadUT()); pressure = bmp085GetPressure(bmp085ReadUP()); Serial.print("Temperature: "); Serial.print(temperature, DEC); Serial.println(" *0.1 deg C"); Serial.print("Pressure: "); Serial.print(pressure, DEC); Serial.println(" Pa"); Serial.println(); delay(1000); }

Arduino Result

References https://docs.google.com/file/d/0B2_rhDNAxM4samxIU3BscEQ4bzg/edit?pli=1

NEW Module: BMP180

References 中文網頁 http://ruten-proteus.blogspot.tw/2014/06/bmp180-arduino-PTA.html

References http://www.instructables.com/id/Arduino-BMP180-temperature-and-pressure-sensor-rea/ https://learn.sparkfun.com/tutorials/bmp180-barometric-pressure-sensor-hookup-