@Martin--it is interesting to think through this switch thing. All handheld DVMs/DMMs have at least one big rotary switch. When we used those in production, they had to be calibrated/certified. There were stickers on them showing the dates, and when they were due back to re-cert. But I don't ever recall anybody checking the meter if they changed the rotary switch. There is some exposure there that you could be doing bad measurements.
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. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.