I am currently in the process of building a quadruped robot that uses 12 SG90 servos, controlled by a PCA9685, for motion. I've found many examples of quadrupeds, but barely any mention of their power sources
I have tried many power sources, but have had no luck in getting the 5 volts the servos need at a high enough current.
Each servo can supposedly use up to 700ma when stalled, so around 10 amperes should be enough to power the whole robot, including electronics, at maximum strain, with current to spare.
The trouble is, I haven't been able to find any 5V regulators beyond 3 amperes that aren't overpriced or comically large.
What would be the best setup going forward? Should I chain several 18650 batteries (3.7V) in parallel and use multiple small boost converters? Should I design a PCB that includes many 5V regulator ICs? Is there a preexisting solution that can power multiple servos that isn't ridiculously heavy or expensive?