Weather Station | How to Use BME280 Temperature, Humidity and Pressure Sensor

In this tutorial we are going to make a weather station project using BME280 Temperature, Humidity and Pressure sensor and ST7735 Display.

Watch the Video!

Step 1: What You Will Need

• Arduino UNO (Or any other Arduino)
• LCD Display TFT 7735
• BME280 Sensor
• Jumper wires
• Breadboard
• Visuino program: Download Visuino

Step 2: Brought by PCBWay

Thank you PCBWay for supporting this tutorial and helping users learn more about electronics.

What I like about the PCBWay is that you can get 10 boards for approximately $5 which is really cost effective for professional made boards, not to mention how much time you save!

Go check them out here. They also offer a lot of other stuff in case you might need it like assembly, 3D printing, CNC machining and a lot more.

Step 3: The Circuit

 

Step 4: Start Visuino, and Select the Arduino UNO Board Type

The Visuino: https://www.visuino.eu also needs to be installed. Download Free version or register for a Free Trial.

Start Visuino as shown in the first picture Click on the “Tools” button on the Arduino component (Picture 1) in Visuino When the dialog appears, select “Arduino UNO” as shown on Picture 2

Step 5: In Visuino Add Components

• Add “Pressure Temperature BME280 I2C” component
• Add “TFT Color Display ST7735” component

Step 6: In Visuino Set Components

 

• Select “Display1” and set “Orientation” to goDown (this will change the directon of displaying)

Note: In case the display would not work try changing the Type under the properties window

• Double click on the “Display1” and in the elements window expand “Text” and “Lines” on the right side and drag to the left side:
• 4X “Draw Text”
• 3X “Draw Line”
• 3X “Text Field”
• On the left side select:
• – “Draw Text1” and in the properties window set “Size” to 1, “Color” to aclDodgerBlue and “X” to 17, “Y” to 5 and “Text” to WEATHER STATION
• – “Draw Line1” and in the properties window set “Height” to 0, “Width” to 120 , “Color” to aclBlue and “Y” to 20
• – “Draw Text2” and in the properties window set “Size” to 1, “Color” to aclRed and “X” to 30 and “Y” to 25 and “Text” to TEMPERATURE
• – “Text Field1” and in the properties window set “Size” to 2, “Color” to aclYellow and “X” to 30 and “Y” to 40
• – “Draw Line2” and in the properties window set “Height” to 0, “Width” to 120 , “Color” to aclBlue and “Y” to 60
• – “Draw Text3” and in the properties window set “Size” to 1, “Color” to aclAqua and “X” to 40 and “Y” to 65 and “Text” to HUMIDITY
• – “Text Field2” and in the properties window set “Size” to 2, “Color” to aclYellow and “X” to 30 and “Y” to 80
• – “Draw Line3” and in the properties window set “Height” to 0, “Width” to 120 , “Color” to aclBlue and “Y” to 100
• – “Draw Text4” and in the properties window set “Size” to 1, “Color” to aclWhite and “X” to 40 and “Y” to 105 and “Text” to PRESSURE
• – “Text Field3” and in the properties window set “Size” to 2, “Color” to aclYellow and “X” to 15 and “Y” to 120

Step 7: In Visuino Connect Components

• Connect “PressureTemperatureHumidity1” pin I2C [Out] to Arduino I2C [In]
• Connect “PressureTemperatureHumidity1” pin [Pressure] to Display1>TextField3 [In]
• Connect “PressureTemperatureHumidity1” pin [Temperature] to Display1>TextField1 [In]
• Connect “PressureTemperatureHumidity1” pin [Humidity] to Display1>TextField2 [In]

• Connect “Display1” component pin [Out] to Arduino pin SPI [In]
• Connect “Display1” component pin [Chip Select] to Arduino Digital pin[10]
• Connect “Display1” component pin [Reset] to Arduino Digital pin[8]
• Connect “Display1” component pin [Register Select] to Arduino Digital pin[9]

Step 8: Generate, Compile, and Upload the Arduino Code

In Visuino, at the bottom click on the “Build” Tab, make sure the correct port is selected, then click on the “Compile/Build and Upload” button.

Step 9: Play