Introduction to a test MOOC investigating using Arduino in a simulated lab.http://people.ece.cornell.e... The design project is to develop a strategy for MOOC lab delivery and implement it for a online course which is like a web version of ECE 4760. MOOC means massive open online courses, and ECE 4760 is a lab-based microcontroller design course in Cornell University which uses hardware and software techniques to teach students a variety of design skills, culminating in a large design project. In order to let massive users take lectures and do labs and then grade others' works online, we hook up 123d.circuits.io, a free online platform for developing and debugging electronic projects, to the content management and homework grading system made by ourselves. The content management is realized with PHP, WordPress and Mysql, and the grading component is based on web-based peer review grading method. Our goal is to create a safe service with high scalability to let people around the world learn the basic knowledge of microcontroller and put theories of it into practice without buying microcontrollers and accessory parts and get feedbacks on their way of learning.