Documentation
See Also
See Also
Aktuelles Wetter in Dortmund Eichlinghofen; min/max beziehen sich auf die vergangenen 24 Stunden.
Alle Angaben ohne Gewähr.
| ist | min | max | |
|---|---|---|---|
| Temperatur (West) | 2.1 °c | 1.8 °c | 12.4 °c |
| Temperatur (Nord) | -0.4 °c | -0.8 °c | 6.7 °c |
| Temperatur (Schatten) | -0.5 °c | -0.7 °c | 8.3 °c |
| Luftfeuchtigkeit (West) | 100 % | 100 % | 100 % |
| Luftfeuchtigkeit (Nord) | 91 % | 73 % | 96 % |
| Luftfeuchtigkeit (Schatten) | 100 % | 99 % | 100 % |
| Luftdruck | 1016 hPa | 1001 hPa | 1016 hPa |
| Wind | 11 km/h | 0 km/h | 100 km/h |
| Niederschlag | 0.0 mm/h | 0.0 mm/h | 1.8 mm/h |
| PM10 | 14.9 µg/m³ | 0.6 µg/m³ | 36.6 µg/m³ |
| PM2,5 | 3.0 µg/m³ | 0.5 µg/m³ | 10.3 µg/m³ |
| Licht | 7 lx | 0 lx | 23501 lx |
Stand: 27.03.2023 07:00 Uhr
Sensors
- Bosch BME280 (Temperature, Pressure, Humidity via I²C). Works like a charm with the Bosch Sensortec BME280 driver
- Maxim MAX44009 (ambient light via I²C) (max44009.py).
- NOVA SDS011 (PM2,5 and PM10 fine dust particles via UART). Needs post-processing when used in high humidity environments, e.g. during fog or rain. I haven't implemented that yet.
- TFA Dostmann 30x3161 (tipping bucket rain gauge / Regenwippe with reed switch). One impulse per 0.45mm (i.e., one impulse per 0.45l/m²)
- WH1080 anemometer (with reed switch). Wind speed in km/h is number of impulses per second * 2.4; IIRC it's one or two impulses per revolution.
Meta
Data collection is managed by a Raspberry Pi 3 and two ESP8266 boards.
Raspberry Pi 3
Powered via a 12V mains supply and a 5V step-down converter. Will hopefully be powered via a solar panel from spring on – in winter, solar power is insufficient, so the panel is logging data but not connected to the RasPi.
| now | min | max | |
|---|---|---|---|
| Load | 0.2 | 0.1 | 0.3 |
| CPU Temperature | 27 °c | 27 °c | 39 °c |
| Aux Temperature | ↑ 30 °c | 27 °c | 33 °c |
| Battery Temperature | 1.4 °c | 1.2 °c | 14.8 °c |
| Battery Voltage | 12.7 V | 12.7 V | 14.1 V |
| USB Voltage | 4.83 V | 4.77 V | 5.02 V |
ESP8266
The sensors are powered from individual 500mV solar cells and BQ25570 harvesters, and automatically adjust their duty cycle to keep battery voltage between 3.7 and 4.1 V. Source code: bme280 harvester.lua
| now | min | max | |
|---|---|---|---|
| Battery (Nord) | 3.78 V | 3.78 V | 3.79 V |
| Battery (Schatten) | 4.11 V | 4.09 V | 4.14 V |