Some ESP8266-Mini D1 with DS18B20 temperature sensors. Latest experiment is with the BMP280. Exact barometric pressure and really good temperature.
Vatten och lufttemperatur Kärraviken Askersunds kommun, Vättern. Se badtemperatur här. Data logging with esp8266, ds18b20. © Andreas Svensson 2020
Checking in/out temperature from central heater. Using One WeMos D1 and two DS18B20. Code and schematics will be avaiable soon.
Temperature, Lorensberg, Karlstad, Sweden. Mandolyn sensor connected to Tellstick NET.
Extracted from a Maplin weather station using a Raspberry Pi and pywws