Redevelopment of engineering course from traditional to blended model is a challenging prospect. Some general guidelines are given at first, then Electric Circuit Theory (ECT) case study is discussed. Over the last six years the ECT course, at the Silesian University of Technology (SUT), has been gradually converted into blended e-course, for both the Learning Content and Assessment Program. Some details of this conversion, which is continuously updated, as well as students' feedback and the lessons learned are presented.