https://github.com/agners/scd30logger

Sensirion SCD30 based CO2, Humidity and Temperature Logger for MicroPython
https://github.com/agners/scd30logger

Last synced: about 1 month ago
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Sensirion SCD30 based CO2, Humidity and Temperature Logger for MicroPython

• Host: GitHub
• URL: https://github.com/agners/scd30logger
• Owner: agners
• License: mit
• Created: 2019-06-24T19:14:02.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2019-06-24T19:14:35.000Z (over 5 years ago)
• Last Synced: 2024-05-02T00:35:56.444Z (9 months ago)
• Language: Python
• Size: 3.91 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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• awesome-micropython - scd30logger - Sensirion SCD30 based CO2, Humidity and Temperature Logger for MicroPython. (Development / Logging)

README

        
# SCD30 Logger

CO2, Humidity and Temperature Logger using Sensirion SCD30 written in Python 3

for MicroPython. Continously logs date, time and sensor data on a file on the

SD card. The SD card as well as the sensor module is turned off to conserve

battery power (further improvements possible by using RTC wakeup instead of a

simple sleep).

## Getting Started

### Prerequisites

* Sensirion SCD30 Sensor

* Pyboard D (other MicroPython boards should work with some adjustments)

### Wiring

| Pyboard       | SCD30         |

| ------------- |---------------|

| X15 (3V3)     | VDD           |

| X14 (GND)     | GND           |

| X9            | TX/SCL        |

| X10           | RX/SDA        |

I recommend to also connect VBAT (Y15) to a backup battery. This makes sure that

the RTC keeps time when disconnecting the board and connecting it someplace

else.

### Installing

Copy main.py and lib/scd30.py on a SD-card and plug it into the board or

the internal flash (via USB).

The logger uses the RTC to write down when the measurement has been taken. Make

sure to set date and time correctly:

```python

from pyb import RTC

rtc = RTC()

rtc.datetime((2019, 6, 12, 3, 8, 49, 20, 0)) # y, m, d, weekday, h, m s, ms

rtc.datetime()

```

## Built With

* [MicroPython](http://micropython.org/)

* [SCD30](https://www.sensirion.com/en/environmental-sensors/carbon-dioxide-sensors-co2/)

- SCD30 Sensor Module (available from various suppliers)

## License

This project is licensed under the MIT License - see the

[LICENSE](LICENSE) file for details