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https://github.com/neliogodoi/MicroPython-BME280
Driver to digital sensor of Temperature, Pressure and Humidaty
https://github.com/neliogodoi/MicroPython-BME280
Last synced: 2 months ago
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Driver to digital sensor of Temperature, Pressure and Humidaty
- Host: GitHub
- URL: https://github.com/neliogodoi/MicroPython-BME280
- Owner: neliogodoi
- Created: 2018-06-20T17:25:39.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2019-03-10T23:36:22.000Z (over 5 years ago)
- Last Synced: 2024-01-27T08:11:15.360Z (5 months ago)
- Language: Python
- Homepage:
- Size: 2.08 MB
- Stars: 7
- Watchers: 2
- Forks: 4
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Lists
- awesome-micropython - MicroPython-BME280 - Driver to digital sensor of Temperature, Pressure and Humidity. (Libraries / Sensors)
README
# MicroPython-BME280
## BME280: Digital Humidity, Pressure and Temperature Sensor
The BME280 is a sensor from Bosch Sensortec for high precision measurements of Temperature, Pressure and Humidity
### DataSheet:
https://www.mouser.com/datasheet/2/783/BST-BME280_DS001-11-844833.pdf
or file 'BST-BME280_DS001-11-844833.pdf'
## Key features:
Package: 2.5 mm x 2.5 mm x 0.93 mm metal lid LGA
Digital interface: I2C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz)
Supply voltage: VDD main supply voltage range: 1.71 V to 3.6 V
VDD IO interface voltage range: 1.20 V to 3.6 V
Current consumption: 1.8 μA @ 1 Hz humidity and temperature
2.8 μA @ 1 Hz pressure and temperature
3.6 μA @ 1 Hz humidity, pressure and temperature
0.1 μA in sleep mode
Operating range:
-40...+85 °C, 0...100 % rel. humidity, 300...1100 hPa
## Files:
'bme280.py': Version for Developers of driver for geral devices compatibles of MicroPython - ESP8266, ESP32, LoPy, etc.
'bme280_lowmem.py': Version Low Memory of driver for geral devices compatibles of MicroPython - No Documenteded
'bme280_microbit.py': Version for Developers of driver for BBC Micro:bit devices
'bme280_microbit_lowmem.py': Version Low Memory of driver for BBC Micro:bit devices - No Documenteded
## Tests:
#### ESP8266
```python
import bme280
from machine import I2C, Pin
i2c = I2C(sda=Pin(4), scl=Pin(5))
sensor = bme280.BME280(i2c=i2c)
sensor.formated_values
```
#### ESP32
```python
import bme280
from machine import I2C, Pin
i2c = I2C(sda=Pin(21), scl=Pin(22))
sensor = bme280.BME280(i2c=i2c)
sensor.formated_values
```
#### LoPy
```python
import bme280
from machine import I2C
i2c = I2C(0, I2C.MASTER, baudrate=100000)
sensor = bme280.BME280(i2c=i2c)
sensor.formated_values
```
#### BBC Micro:bit
```python
from microbit import i2c
import bme280
bme = bme280.BME280(i2c)
temp, pres, humi = bme.values()
```
## Driver Benchmark for Memory Consumed*:
*To import all dependencies and construct the object.
| |ESP8266|ESP32|LoPy|BBC Micro:bit|
|------:|:-----:|:---:|:--:|:-----------:|
|Total Memory device (Kb)|64|520|200|16|
|Memory Free (Kb)||||9.3|
|Memory Uses (Kb)|-|-|-|3.48|
|Memory (%)|-|-|-|38|
|MicroPython Version||||MicroPython v1.9.2-34-gd64154c73|
The Test in BBC Micro:bit :