Getting it rolling

OK, that's a lot of theory, so now let's fire up one of our motors via Raspberry Pi. To do that, go ahead and connect the motor and the motor driver as shown:

Now, once you are done with it, let's upload the code and see what happens:

import RPi.GPIO as GPIO
from time import sleep
GPIO.setmode(GPIO.BCM)

Motor1R = 20
Motor1L = 21

GPIO.setup(Motor1R,GPIO.OUT)
GPIO.setup(Motor1L,GPIO.OUT)


GPIO.output(Motor1R,GPIO.HIGH)
GPIO.output(Motor1L,GPIO.LOW)

sleep(5)

GPIO.output(Motor1R,GPIO.LOW)
GPIO.output(Motor1L,GPIO.HIGH)

sleep(5)

GPIO.cleanup()

Now, let's understand the code a bit:

Motor1R = 20
Motor1L = 21

Pin number 20 is connected to IN 1 of the motor driver. For convenience, we have changed motor 1 right to Motor1R; in reality, the motor can spin in any direction but we have just written this for convenience and understanding. Similarly, we have...