One of the basic problems in the development and production process of molds for injection molding is the control of temperature conditions in the mold. Mold temperature control is one of the most important parameters in injection molding process of thermoplastics. Mold temperature should be controlled so that the mold temperature is in the right accordance with the standard specifications of plastic to ensure the quality of plastic produced is consistent. This project is focused on designing and developing thermoelectric cooler for controlling mold temperature in injection molding using Arduino UNO. The design for this project is selected by using Pugh Method. This project is done by clamping thermoelectric peltier between the water-cooling block. Arduino UNO and relay that are used to control temperature sensor and water pump at the hot and cold side. Testing data is obtained from the Arduino UNO that is connected to the temperature sensor. Based on the testing result, this project is working well but it needs some modifications for improvement before it can be used in the injection molding machine.
