For people in Europe I can recommend rs-online.com as a reliable source of the STM32 boards. They delivered to Czech rep. in two days for a shipping fee of 9 USD. /not connected to them, just a happy customer../ And BTW the board itself is very cool. It boots up with six colourful icons on the LCD (video player-image browser-clock-game-performance benchmark-system info). Reminds one of the older mobile phones. You can control it by touching the display. Nice. Really looking forward to the hands-on part of webinars.
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.