Arduino control help: 3 motor setup

Let’s try this again,
So I am testing an arduino control setup with 3 motors. I am using thumb joysticks for arduinos. As I test the ESCs turn on, one motor starts spinning like its idling. As I move the joysticks around ESCs beep motor either act erratic or stops and another motor starts. I am doing something wrong I just don’t know what it is. It acts similar when I hook it up to a pixhawk. I hope someone can help.
Using a 12v deep cell,

Hi,

Please check our BasicESC R3 documentation, there is an Arduino code available for tests.