Crusty - I've been selling small quantities of my robot boards on ebay off and on for probably ten years now. It's always been more a case of just trying to roucoup some of my costs than of making a profit. The nice thing about a Kickstarter is that you don't have to guess ahead of time and risk the money needed to buy in quantity.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.