Crusty - that first project was a surface mount adaptation of Jeff Keyzer's Geiger counter, with an ATTIY2313. The home built programmer worked fin for it. I've since used an Arduino as programmer and purchased an actual Atmel programmer.
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.