I try, as much as possible, to put symmetry in my PCBs. I try to keep trace spacing the same and even put parts consistently oriented. It's not always possible, but I always seem to at least try to do it that way. It is kind of an obsession.
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.