355/113 is 3.1415929203... Pretty much close to Pi (3.141592653589...). When you have to deal with Pi with 8 or 16bit embedded MCU, multiply with 355 then divide by 113 can be a good-ehough substitute of Pi :-)
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.