PURWARUPA SISTEM PEMANTAU DAN PENGENDALI SUHU RUANGAN BERBASIS SHORT MESSAGE SERVICE (SMS) DENGAN ATMEGA 16

Technology developments of Short Message Service (SMS) is expect to be able to provided facilities for users to monitor and function as an operator of a situation in a room directly without having to the location. The equipment a miniature room with processor system using ATMega16 microcontroller, temperature and humidity sensors SHT11, LDR sensor for determining the intensity of light, a fan for cooling, and a hairdryer for heating. The system works automatically, either when will cool or heat the room. Cooling and heating room is based on temperature that read by SHT11 sensor. Overall of test results show that the system has been able to monitor and condition the temperature in the miniature room between 25 º C into 34 º C. Prototype of monitoring and controlling the temperature of a miniature room is based on Short Message Service (SMS) with ATMega16, has been well implemented with the system design. Displaying the data on the LCD, and then send it via SMS PDU format. Temperature data which got from sensors saved in EEPROM, so that if power failures users no need to set its back