That's a pretty neat trick, fitting 37 I/Os into a 28-pin DIP, two pins of which are used for power and GND. Speaking of which, I wonder how much ground bounce you get if you switch multiple outputs simultaneously?
I think maybe we need to write a guide to all of these so people can see what is out there and compare them. The MBed is a nice piece of hardware, I've seen it used many times. There's also the teensy, digispark, femtoduino, etc.
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.