Online thermometer and thermograph

The graph shows the progress outdoor and indoor temperatures measured in the Prague.

Current temperature:

Indoor = 22.4 °C

Outdoor = 9.3 °C

Daily graph
  1. Hourly
  2. Daily
  3. Weekly
  4. Monthly
  5. Yearly

Temperature measurement is performed using three digital thermometer (DS18B20 2x, 1x DS18S20-PAR), connected to the ASUS WL-V2 500gP router with 1-Wire bus support installed. Temperatures from the ASUS are loading via HTTP protocol and recorded into the RRD database from which they are subsequently generated to the graphs
Details and measurement methodology and process are summarized in the blog article Online thermometer with ASUS WL-500gP V2 - processing and display of temperature on the Web