This research aims to design differential thermal analysis tool aids to analyze the melting point of the material. Differential Thermal Analysis props have a furnace with a maximum temperature of 600 °C. The temperature sensor used is a K-type thermocouple with a measurement range of -200 °C to 1200 °C. A controller used to control the temperature of the furnace is Autonics with a digital temperature controller type TK4M. Measurement of the value of the temperature in the furnace using an Arduino Uno microcontroller connected to LabVIEW software via USB. Measurement of the melting point of the material used in these props is tested on material Indium (In), tin (Sn), and zinc (Zn) with melting points 152,5 °C, 231,5 °C, and 425 °C.