I want to build an Arduino-powered rover, but I'm having issues with the power supply. I'm using two motors that run off 3V, and a 5V Arduino Pro Mini. For the power supply, I have a 2-cell Li-ion battery which is at 7.4V.
The Arduino Pro Mini has a built-in voltage regulator, but I'm not sure how to drop the voltage to 3V so I can power the motors safely. The motors are driven by a L293N motor driver.