In the guide they state the following:
Please note the HAT does not power the Raspberry Pi, and we strongly recommend having two seperate power supplies - one for the Pi and one for the motors, as motors can put a lot of noise onto a power supply and it could cause stability problems!
Currently I have two separate plugs going to two separate wall outlets. I want to use only a single plug but I'm not sure what's the right way to do it, and I'm pretty new to power and electricity.
My best plan now is to use a single 6V 3A plug and connect two buck converters (https://www.adafruit.com/product/1385) one for the RP3 and one for the Motor hat, in hope to eliminate the noise coming from the motors (?). Am I in the right direction and idea or tip on how can I use a single power supply for my project will be greatly appreciated!