Development of an indoor environment monitoring system with secure digital (SD) card storage

Demand of indoor environment monitoring system is increasing especially in science laboratories, hospital wards and farm incubators. In this work, a low cost indoor environment monitoring system with secure digital (SD) card storage is presented. The system developed uses an 8-bit microcontroller with an on-chip 10-bit analog-digital-converter (ADC) as the system core and monitors three environmental parameters i.e. temperature, humidity and brightness.