Using embedded system technology in a greenhouse, the system seeks to autonomously regulate the temperature while monitoring it in real-time. These systems utilize sensors and microcontrollers to detect temperature changes, instantly activating heating or cooling components. To maintain constant environmental conditions, this method is applied in homes, agricultural settings, and industrial environments. It also helps to increase energy efficiency and decrease human intervention. A temperature control project was developed using an Arduino platform integrated with a PID control system, aiming to achieve precise and efficient temperature regulation. The system utilizes the PID algorithm to manage both cooling and heating mechanisms automatically. The desired temperature can be set remotely via the RemoteXY interface using Bluetooth communication. It relies on real-time data from a specific temperature sensor to perform continuous adjustments based on the PID logic. This approach enables high accuracy in temperature control while optimizing energy consumption and enhancing overall system efficiency.