This document summarizes experiments conducted by a student group on running LEDs using a microcontroller. The group, consisting of Wulaningtyasty and Rizki Wulan Yunitasari, performed four experiments for their Microcontroller Systems course taught by R. Suryoto Edy Raharjo. Each experiment included a flowchart and program to run an LED using a microcontroller. The document thanks the reader.