2016's problem statement involved building a glider. That too a miniature one! Until then we had comfortable limits on total electronics weight and available space. That changed this time, though the required functionality increased (a little).
Owing to above constraints, we had to build the electronic subsystem from scratch using the bare-minimum components. I managed to reduce board size by 86% while the power consumption was reduced by 45% when compared to previous year's design. This will a 3.3V architecture running at 8MHz and tightly controlling sleep cycles of power hungry XBee Pro and powers off a bus of CR2032 without additional power conditioning circutary. Detatch mechanism (to seperate glider from container) is innovative too. We heated a Ni-Chrome wire using a seperate high current density Li-ion cell to cut threads holding the duo. Over-all the design turned out pretty compact
