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Research Article Open Access

Design and Development of an Integrated Relative Humidity, Temperature Measurement and Gas(LPG) Sensing System Using PIC18F25K20


The design and development of a relative humidity(RH), temperature(T) measurement and gas (LPG] sensing system using PIC18F25K20 is presented in this paper. PIC18F25K20 microcontroller is the heart of the whole system which reads the digital equivalent of relative humidity (RH), ambient temperature (T) and gas sensing data (LPG) with the help of on chip 10-bit analog to digital converter (ADC). LPG(MQ-2) gas sensor and HSM 20 G (Humidity and temperature) sensor are interfaced with PIC18F25K20. The measured parameters are displayed on LCD which is also interfaced with PIC18F25K20. Developed system with PIC18F25K20 microcontroller is portable and whole system works with 9V DC battery.


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