SISTEM PENGENDALIAN SUHU DAN KELEMBABAN UDARA DI DALAM RUMAH KACA

Relative temperature and humidity is an environmental element that can influence the plant�s productivity. Green House is one of the solutions that can create a climate to help the plants be productive without recognizing the season. Besides that, it can enable preventions towards pests and disease infections. The development of technology in the world of farming that is growing swifttly will need one system that can automatically work. By creating it, can create a decrease of work from humans. The creation of Control system aims to understand the level of humidity and temperature that will then be controlled to adjust the level of humidity with plant�s need. This automatic system uses SHT75 as a temperature and humidity sensor. ATMEGA16 microcontroller is built as a microprocessor that processes the program. The keypad is to adjust the setting. Lastly, the actuator or the operational method uses a fan to control the temperature and a spray-on pump to control the humidity. The result of the testing hardware is that the tool has a standard of error (SE) of measuring the temperature is 0.07, while the standard of error (SE) to measure the humidity is 0.139. The correlation coefficient between temperature and humidity is -0.9616. The fanning of air can decrease the temperature in a green house with an estimated temperature of 2oC. On the other hand, the spraying of water can increase the maximal humidity of air with 12 %RH. From the analysis of the tool implementation, a conclusion is gathered: the tool can automatically work to control the temperature and the humidity in a green house