I am doing Robotics projects, at first I start I started with wall follower Robot using Two ultra sonic sensors, my code is perfect. but I faced the problem in powering. At first I used separate power supplies : one supply for pro mini and for motor driver Ic, second supply for motor driver IC 12v to power motors
during this condition my robot did not run in forward condition(too slow trying to move), but it runs in backward condition(average speed).
but when I provided them all with the single power supply source (for pro mini(5v), motor driver(5v and 12v) its runs efficiently. and I have achieved what I want.
still I did not understand the concept of supplying power to robots, as I have read from website we should provide separate supply for 12v motor and separate supply for other electronics components.
Plz provide me the clear understanding on this.