> For the complete documentation index, see [llms.txt](https://learn.breadstick.ca/breadstick/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.breadstick.ca/breadstick/breadsticks/support-boards/i2c-devices/weather-crouton.md).

# Weather Crouton

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<figure><img src="/files/Ft8WNZZ31KhWnK1wnrv4" alt="" width="563"><figcaption></figcaption></figure>
{% endtab %}

{% tab title="Back" %}

<figure><img src="/files/egtzMJQKszGvCuYVDpYz" alt="" width="563"><figcaption></figcaption></figure>
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## Product Page

<https://shop.breadstick.ca/products/weather-crouton>

## Circuit Python Library

<https://github.com/adafruit/Adafruit_CircuitPython_BME280>

## BME280 Datasheet

<https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme280-ds002.pdf>

## Code

```python
"""
Weather Crouton (BME280) Demo Code
Breadstick Innovations
April 7, 2024
https://learn.breadstick.ca/breadstick/breadsticks/support-boards/i2c-devices/weather-crouton
"""

import board
import time
from adafruit_bme280 import basic as adafruit_bme280

crouton_i2c = board.I2C()  # Default Breadstick I2C pins D11(SCL) & D12(SDA)
bme280 = adafruit_bme280.Adafruit_BME280_I2C(crouton_i2c)  #

# Sea Level Pressure is defined as 1013.25 hPa
# This number is used for calculating bme280.altitude in meters
bme280.sea_level_pressure = 1013.25

# Uncomment this line if you want to calibrate the altitude to your location
# Warning - natural changes in air pressure will affect altimeter measurements
bme280.sea_level_pressure = bme280.pressure

while True:
    temp = bme280.temperature
    hum = bme280.relative_humidity
    pres = bme280.pressure
    alt = bme280.altitude

    plotter_data = (alt,)  # Mu's Plotter only displays tuples, this is a single object tuple

    print(plotter_data)
    print(f"Temperature: {temp} °C")
    print(f"Humidity: {hum} %")
    print(f"Pressure: {pres} hPa")
    print(f"Altitude: {alt} m")
    print("")

    time.sleep(0.1)

```

<figure><img src="/files/2XX0HkCgTiyZ1OmnEVBN" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/nz0ytAr6uzlxtDJC7Yxt" alt=""><figcaption></figcaption></figure>