Keywish Hummer-Bot, Инструкция по эксплуатации

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Fig.2.4.7 Connection between Arduino and L298N Drive Board
After the connection, we do not know whether the motor can work normally or not, so we need to do a
simple test by copying the following code(you can also open the program in the CD directly) into the IDE
development environment and downloading to the development board. And turning on the power(power
connection is introduced the tenth and eleventh steps in 3.1.2) to observe the wheels rotation, if "going
forward 5s----stopping 1s---- going back 5s---- stopping 1s----turning left 3s----stop 1s----turning right 3s"
are normal,the connection is correct, otherwise the polarities of the motor may be reversed, then you need to
adjust slightly.
Note: this test and IO selection are only for reference, you can choose other IO ports or use other wiring
methods according to your own ideas.
int E1 = 5 ; //PWMA
int M1 = 9 ; //PWMA
int E2 = 6 ; //PWMB
int M2 = 10 ; //PWMB
void setup ()
{
}
void loop ()