Universitas Muhammadiyah Yogyakarta as the one of the competitor in the Lapan’s competition, Komurindo 2019, have potentials to develop reliable interface for payload rocket. Designing process is in both ways, designing dummy data and interface. Designing dummy data is using Arduino UNO and Arduino IDE, while designing interface is using LabVIEW 2017. Arduino IDE gave command to Arduino UNO to produce dummy data so its data can be processed in LabVIEW 2017. Dummy data is produced from Analog 0 pin of Arduino UNO using randomSeed() code in Arduino IDE. Its format is determined as the research before. LabVIEW 2017 supporting data acqusition process and displaying result. Then, testing of data is in two methods, qualitative and quantitative. The qualitative method is trying to test the reliable of system. So, the quantitative method is trying to calculate the error of system in some system testing. From the simulation that was done, in result is system working reliable enough and 10 % error from 50 times data pickings. In 10 minutes, occurred three errors and not interfere LabVIEW process so LabVIEW is stop working. This matter is matched to the necessary of Komurindo 2019 team.