In this article, we examine the use of electronic textiles (e-textiles) for introducing key computational concepts and practices while broadening perceptions about computing. The starting point of our work was the design and implementation of a curriculum module using the LilyPad Arduino in a pre-AP high school computer science class. To understand students' learning, we analyzed the structure and functionality of their circuits and program code as well as their design approaches to making and debugging their e-textile creations and their views of computing. We also studied students' changing perceptions of computing. Our discussion addresses the need for and design of scaffolded challenges and the potential for using crafts materials and activities such as e-textiles for designing introductory courses that can broaden participation in computing.