@Susan: you can certainly make money off open hardware, but it is a lot easier if you own the means for production. if you can't make the boards yourself, there is still value in support, etc., but there are so many places where you have to "share the wealth" that you can eventually be cut out of the value chain.
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.