I have used some of the online calculators, but engineers have told me that some of the results are questionable. I have used Speedstack from Polar, but I don't believe they offer any free "starter" version. I guess I needed to qualify my query and ask if anyone knows of an ACCURATE free impedemnce calculator. :>)
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.