<![CDATA[The population number of rock trush according to Basuni et al explains that the rock trush population in nature become extinct because it has strong territorial and a lot of hunting due to its typical sound as a chirping bird. The efforts of conservation can be done through breeding activities. By this reason, it is important to do captive breeding and cultivation of rock trush. One of magpie’s cultivation is breeding the rock trush but there is a challenge in breeding when the hatching process. Not only the quality of good embryo, the success of hatching process is depend on ambient temperature. Temperature changes when the hatching process by its mother are influenced by weather during day and night or hot and rainy conditions.The fail of hatching process can make loss to the farmers because of ruck trush has an expensive cost. From these reasons, to increase the success rate of hatching eggs, stability of temperature is needed during the incubation process. In this study, egg incubator was made using HSM-20G sensor as a temperature and humidity sensor that placed in the center of the egg rack. Propotional-Integrative-Derivative (PID) control method is implemented in this system to keep temperature value of 37 C. The PID control is used to regulate the dim and bright light in the bulb when produce heat until the setting point reached. Because of the changing response speed in temperature is relatively slow, so trial and error parameters are made the constant values Kp = 2, Ki = 0.5 and Kd = 0.1, which produce the steady state of error not be more than 0.53% to the temperature set point. In this machine also used a fan to flatten the temperature and there is a hole for air circulation.]]>
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