Author : PRANAV PRABHA Date : 07/12/2020 Platform : Tiva Development Kit TM4C123GH6PM

Control of temperature and relative humidity is critical in the preservation of library and archival collections because unacceptable levels of these contribute significantly to the breakdown of materials. High relative humidity provides the moisture necessary to promote harmful chemical reactions in materials and, in combination with high temperature, encourages mold growth and insect activity. Extremely low relative humidity, which can occur in winter in centrally heated buildings, may lead to desiccation and embrittlement of some materials.

System can be used to monitor the temperature, relative humidity and light intensity in rooms.

Sensors used: DHT 22 - Temperature & Relative Humidity Photoresistor - Light Instensity