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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) | — | — | — |
| Temperatur (Nord) | — | — | — |
| Temperatur (Schatten) | 7.5 °c | 6.9 °c | 9.9 °c |
| Luftfeuchtigkeit (West) | — | — | — |
| Luftfeuchtigkeit (Nord) | — | — | — |
| Luftfeuchtigkeit (Schatten) | 100 % | 100 % | 100 % |
| Luftdruck | — | — | — |
| Wind | 24 km/h | 0 km/h | 147 km/h |
| Niederschlag | — | — | — |
| PM10 | 7.7 µg/m³ | 2.5 µg/m³ | 40.1 µg/m³ |
| PM2,5 | 2.2 µg/m³ | 0.9 µg/m³ | 6.3 µg/m³ |
| Licht | — | — | — |
Stand: 11.12.2023 14:20 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
Power supply comes from a solar-charged lead acid battery whenever sufficient solar power is available, and falls back to mains supply otherwise. In both cases, the power supply providies 12V, and a step-down converter regulates it to 5V for the Raspberry Pi and its peripheral (including a TheThinghNetwork LoRaWAN gateway).
| now | min | max | |
|---|---|---|---|
| Load | — | — | — |
| CPU Temperature | — | — | — |
| Aux Temperature | ↑ 31 °c | 27 °c | 31 °c |
| Converter Temperature | 11.1 °c | 9.7 °c | 12.3 °c |
| Battery Voltage | 12.8 V | 12.2 V | 12.9 V |
| USB Voltage | 4.95 V | 4.89 V | 5.02 V |
| Time on Solar Power | |
|---|---|
| Past 24 hours | X |
| Past 7 days | X |
| Past 30 days | X |
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) | — | — | — |
| Battery (Schatten) | 3.90 V | 3.90 V | 3.92 V |