Room Temperature Monitoring System (Sending Device) / Nur Jalilah Yahya

This paper describes the Room Temperature Monitoring System (Sending Device) using the Peripheral Interface Controller (PIC). The system has a knob for setting the required temperature set point. To show the result, there are three lights to show the status of the system and temperature. The microcontroller used for this project is PIC 16F873 with a built in AID converter. The LM335 sensor is used to give an analogue output with initial accuracy, directly calibrated in Kelvin. The sending device MAX232 is used as receiver and transmitter. The controller software for the system was developed using MPLAB IDE software. The PIC processor's ability to store and run unique program makes it extremely versatile and its ability to perform match and logic function allows it to mimic sophisticated logic and electronics circuits. Furthermore PIC is the cheapest microcontroller we can found in the market.