<![CDATA[The temperature inside a fried chicken display case is an external factor that affects the quality of crispy fried chicken. A heating system is essential to ensure that the crispy fried chicken remains in a condition ready and suitable for consumption. This study implements an Arduino Uno-based temperature control system for a fried chicken display case using the PID (Proportional-Integral-Derivative) control method. The PID method was selected because it offers the desired response characteristics: a fast response with minimal error. An incandescent lamp serves as the actuator, while a DHT22 sensor functions as the feedback component. Testing of the PID parameters yielded values of Kp = 220, Ki = 200, and Kd = 60, with a setpoint of 50ºC. In tests conducted without external disturbances, the system achieved a settling time (ts) of 576 seconds (approximately 10 minutes). When tested in the presence of disturbances, the system demonstrated a steady-state response with a steady-state error of 0.01%, a steady-state duration of 3900 seconds (65 minutes), and a recovery time of 609 seconds (approximately 10 minutes).]]>
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