This presentation discusses the speed control of a brushless DC motor using a microcontroller. It includes topics such as the introduction, block diagram, hardware components including the microcontroller, BLDC motor, and other electrical components. The software components and programming languages are also presented. The principles of BLDC motor operation and speed control techniques are explained. Simulation results demonstrating speed control and applications are reviewed. Advantages of using BLDC motors with microcontroller-based speed control are highlighted.