In this workshop, we will familiarize participants with the Interaction Engine, a system for prototyping connected, interactive devices using low cost, singleboard Linux computers and Arduino microcontrollers. Our main objective is to introduce participants to the basic architecture of connected devices and provide hands-on experience creating networked, physical hardware. The Interaction Engine is a generic framework, not a specialized toolkit. We employ widely available, community-supported tools that can enable web-connected hardware capable of merging tangible interfaces with audio/visual web interfaces. We view low-cost single-board computers as an enabling technology, representing the next step for tangible, embedded, and embodied designs enabling deep interaction between physical and digital worlds. This workshop will be a starting point for participants to begin exploring connected device development and will provide a basic set of tools and skills that participants can use in their own applications.