Connecting the BME280 Sensor
The BME280 Environmental Sensor connects to the Pi at 5 pins. Below is a list of the wires and the pin to which they connect
- CS (Chip Select) - Green: Leave this wire disconnected
- ADDR / MISO - Orange: Connect to Pin 19
- SCL / SCK - Yellow: Connect to Pin 5
- SDA / MOSI - Blue: Connect to Pin 3
- GND (Ground) - Black: Connect to Pin 6
- VCC - Red: Connect to Pin 1
Enabling the sensor and locating its address
After you've finished wiring everything up, we need to enable the sensor and locate its address. Open the terminal
- Enter sudo raspi-config
- Select "Interface"
- Select "I2c"
- Enable
Next, we will need the sensor's address on our Pi. Enter sudo i2cdetect -y 1, and make note of the number in the table. In our case, it's 77.