Grove Barometer Sensor
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This Grove - Barometer Sensor features a Bosch BMP085 high-accuracy chip to detect barometric pressure and temperature. It can widely measure pressure ranging from 300hPa to 1100hPa, AKA +9000m to -500m above sea level, with a super high accuracy of 0.03hPa(0.25m) in ultra-high resolution mode. The chip only accepts 1.8V to 3.6V input voltage. However, with outer circuit added, this module becomes compatible with 3.3V and 5V. Therefore, it can be used on Arduino/Seeeduino or Seeeduino Stalker without modification. It is designed to be connected directly to a micro-controller via the I2C bus.
Digital two wire (I2C) interface
Wide barometric pressure range
Flexible supply voltage range
Ultra-low power consumption
Low noise measurement
Fully calibrated
Temperature measurement included
!!!Tip More details about Grove modules please refer to Grove System
Enhancement of GPS navigation
Indoor and outdoor navigation
Leisure and sports
Weather forecast
Vertical velocity indication (rise/sink speed)
Item
Min
Typical
Max
Unit
Voltage
3
5
5.5
VDC
Current
89
/
130
uA
Pressure Range
300
/
1100
hPa
Faster I2C data transfer
/
/
3.4
MHZ
Dimension
20.4*24.3*9.7
mm
Weight
2
g
Barometric condition is one of the criteria used to predict coming change in weather and deduce altitude above sea level. Here is a demo to show you how to read the barometric data from this Grove - Barometer Sensor.
2.Download the library Barometer_Sensor Library;Unzip it into the libraries file of Arduino IDE by the path: ..\arduino-1.0.1\libraries.
3.Create a new Arduino sketch and paste the codes below to it or open the code directly by the path:File -> Example ->Barometer_Sensor->Barometer_Sensor.
4.Open the serial monitor to receive the sensor's data including temperature, barometric pressure value, relative atmosphere pressure and altitude.
1.You should have got a raspberry pi and a grovepi or grovepi+.
2.You should have completed configuring the development enviroment, otherwise follow here.
3.Connection
Plug the barometer sensor into the i2c sockets on grovepi.
4.Navigate to the demos' directory:
To see the code
5.Run the demo.
6.Result
1.Connect it to IIC port of Seeeduino or Grove - Base Shield via a Grove cable. And connect Arduino to PC via a USB cable.
The following is a reference graph plotting out the relationship between altitude above sea level and barometric pressure.