Design of air temperature and humidity measurement based on Arduino ATmega 328P with DHT22 sensor

Abstract

The Arduino ATmega 328P-based temperature and humidity measuring instrument have been successfully designed. The ATmega 328P microcontroller functions to process data which is the output of the DHT22 sensor which receives data signals in the form of temperature and humidity. The results detected by the design of this tool are displayed on the LCD keypad shield. The calibration process for the design tool was carried out at the BMKG Sanglah Denpasar. The results of the calibration of the design tool with reference tools at BMKG show a good level of accuracy, namely 97.97% for air temperature and 99.35% for air humidity.