Identifying Diodes

QUESTION: How can we allow users to scoot backwards?

CONTEXT:  This question stems from the way the buck-boost works.  The buck-boost specified inputs are instructions, not suggestions.  If you reverse the inputs – put connect the input voltage to ground and vice-versa – the circuit will blow.  This is not ideal, as it means one can’t scoot backwards.

METHOD:  Enter the diode!  The diode is a component that acts as a one-way voltage/current gate.  Here’s more about it.  My job is to identify and confirm which diode would work best for our purposes.