The online platform for microcontroller course experiments is crucial for effective control and management of the experimental process when there is a lack of robust support. To facilitate both student experimentation and instructor oversight, we have developed an online platform for microcontroller experiments and management. This platform is built using cutting-edge development technologies and tailored to the specific requirements of course experiment teaching. It is deployed in a cloud server environment, enabling remote implementation, breaking through geographical limitations, and providing convenient control and management. This platform is well-suited for both conducting and overseeing online microcontroller experiments. Additionally, it can support a blended learning approach, serving as a valuable resource for both in-person and online instruction for both educators and students.