~derf / projects / Wetter
dark mode

Aktuelles Wetter in Dortmund Eichlinghofen; min/max beziehen sich auf die vergangenen 24 Stunden.

Alle Angaben ohne Gewähr.

istminmax
Temperatur 2.6 °c2.0 °c8.5 °c
Luftfeuchtigkeit 68 %54 %84 %
Luftdruck 994 hPa985 hPa994 hPa
Wind 4 km/h0 km/h39 km/h
Niederschlag 0.0 mm/h0.0 mm/h0.5 mm/h
PM10 13.3 µg/m³0.9 µg/m³20.8 µg/m³
PM2,5 3.9 µg/m³0.8 µg/m³9.0 µg/m³
Licht 0 lx0 lx21934 lx

Stand: 27.11.2021 19:20 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)
  • 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 4. Its current status is:

nowminmax
Load 0.0 0.0 0.1
CPU Temperature 37 °c32 °c44 °c
Aux Temperature 30 °c27 °c34 °c
USB Voltage 4.86 V4.77 V4.89 V