All drones are susceptible to many of the same fault and failure conditions, ranging from merely annoying to catastrophic, making robust electrical protection essential.
Analog, discrete-element filters have served us well for over a hundred years, but maybe we now need to focus education on filters for the GHz world, such as SAW and BAW devices?
How were you taught to determine the slew rate needed from an opamp?
The autonomous solar powered boat is a great solution which utilizes electronics technology to realize a zero-impact for connected navigation on the water such as the case of the interesting SeaCharger experiment
There are signs that hand soldering of wires is seeing revived interest, but some of the how-to tutorial information out there is very incorrect.