plot inside/ outside temperature, humidity and barometric pressure using arduino/ bmp180 / dht22, location nr berlin intervall 1h
Measure temperature, humidity of office plant soil and air
Arduino Pro Mini (3.3 V, 8 MHz) measuring outside temperature and humidity using a DHT21. Powered by 3 AA eneloops using (only) the on-board voltage regulator. Battery voltage is measured by internal ADC. Wifi connected by esp8266