BMP180 are very popular combined Temperature and Barometric Pressure Arduino sensors. They can be used for weather stations, as well as to measure altitude.
In this Instructable, I will show you, how easy it is to program Arduino to use them, with Visuino - an easy to use graphical development environment for Arduino.
Since I made the Instructable, I discovered that the 3.3V does not need to be connected, as the module has its own internal 3.3V regulator. I have updated the Instructable. The video still shows the 3.3V connected, but this is not needed!
Step 1: Components
Step 2: Connect the BMP180 Pressure Sensor to Arduino
- Connect 5V VCC Power(Red wire), Ground(Black wire),SDA(Green wire), and SCL(Yellow wire), to the BMP180Module (Picture 1)
- Connect the other end of the Ground wire(Black wire) to Ground pin of the Arduino board (Picture 2)
- Connect the other end of the 5V VCC Power wire(Red wire) to the 5V power pin of the Arduino board (Picture 2)
- Connect the other end of the SDA wire(Green wire) to SDA/Analog pin 4 of the Arduino Nano board (Picture 2)
- Connect the other end of the SCL wire(Yellow wire) to SCL/Analog pin 5 of the Arduino Nano board (Picture 2)
- Picture 3 shows where are the Ground, 5V Power, SDA/Analog pin 4, and SCL/Analog pin 5, pins of the Arduino Nano
Step 3: Start Visuino, and Select the Arduino Board Type
To start programming the Arduino, you will need to have the Arduino IDE installed from here: http://www.arduino.cc/.
Please be aware that there are some critical bugs in Arduino IDE 1.6.6.
Make sure that you install 1.6.7 or higher, otherwise this Instructable will not work!
Step 4: In Visuino: Add and Connect BMP180 Component
- Type "bmp" in the Filter box of the Component Toolbox then select the "Pressure BMP180" component (Picture 1), and drop it in the design area
- Connect the "Out" pin of the Pressure1 component (Picture 2) to the to the "In" pin of the I2C channel of the Arduino component (Picture 3)
Step 5: In Visuino: Add Formatted Text Component, and Add 2 Analog Text Elements to It
- Type "form" in the Filter box of the Component Toolbox then select the "Formatted Text" component (Picture 1), and drop it in the design area
- Click on the "Tools" button of the FormattedText1 component (Picture 2)
- In the Elements editor, select "Analog Element" in the right view(Picture 3)
- Click 2 times on the "+" button (Picture 3) to add 2 Analog Elements (Picture 4), then close the Elements editor
Step 6: In Visuino: Specify Formatted Text, and Connect the Formatted Text Component
- In the Object Inspector set the value of the "Text" property to "Temperature %1 Pressure %0" (Picture 1) - The %0 will be replaced with the value from AnalogElement1, and %1 will be replaced with the value from AnalogElement2
- Connect the "Pressure" output pin of the Pressure1 component to the "In" pin of the AnalogElement1 of the FormattedText1 component (Picture 2)
- Connect the "Temperature" output pin of the Pressure1 component to the "In" pin of the AnalogElement2 of the FormattedText1 component (Picture 3)
- Connect the "Out" output pin of the FormattedText1 component to the "In" input pin of the Serial[ 0 ] channel of the Arduino component (Picture 4)
Step 7: Generate, Compile, and Upload the Arduino Code
- In Visuino, Press F9 or click on the button shown on Picture 1 to generate the Arduino code, and open the Arduino IDE
- In the Arduino IDE, click on the Upload button, to compile and upload the code (Picture 2)
Step 8: And Play...
You can see the connected and running Pressure and Temperature sensor on Picture 1.
If you open Serial Terminal in the Arduino IDE or Visuino, you will see the Temperature and Pressure measured by the sensor (Picture 2)
On Picture 3 you can see the complete Visuino diagram.