~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 (Sonne) 14.6 °c14.4 °c28.3 °c
Temperatur (Schatten) 14.5 °c14.5 °c25.6 °c
Luftfeuchtigkeit 73 %48 %89 %
Luftdruck 1018 hPa1013 hPa1022 hPa
Wind 22 km/h0 km/h78 km/h
Niederschlag 0.0 mm/h0.0 mm/h5.0 mm/h
PM10↘ 10.0 µg/m³2.7 µg/m³61.2 µg/m³
PM2,5
Licht 0 lx0 lx68936 lx

Stand: 20.05.2022 23:20 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 mains-powered Raspberry Pi 4 and a battery-powered ESP8266 board (conversion to solar energy harvesting is in progress). Their current status is:

nowminmax
Load 0.1 0.0 0.2
CPU Temperature 46 °c44 °c65 °c
Aux Temperature 35 °c33 °c46 °c
USB Voltage 4.71 V4.54 V4.87 V
Battery 3.98 V3.98 V4.00 V