RPICAR - PS3 gamepad controlled car based on Raspberry Pi

rpicar.py

#!/usr/bin/python
__author__ = 'Artur Poznanski'

from Adafruit_MotorHAT import Adafruit_MotorHAT, Adafruit_DCMotor

import time
import atexit
import pygame

# create a default object, no changes to I2C address or frequency
mh = Adafruit_MotorHAT(addr=0x60)

# recommended for auto-disabling motors on shutdown!
def turnOffMotors():
	mh.getMotor(1).run(Adafruit_MotorHAT.RELEASE)
	mh.getMotor(2).run(Adafruit_MotorHAT.RELEASE)
	mh.getMotor(3).run(Adafruit_MotorHAT.RELEASE)
	mh.getMotor(4).run(Adafruit_MotorHAT.RELEASE)

atexit.register(turnOffMotors)

myMotorRight = mh.getMotor(4)
myMotorLeft = mh.getMotor(3)

pygame.init()
size = [500, 700]
screen = pygame.display.set_mode(size)

pygame.display.set_caption("My Game")
pygame.joystick.init()

joystick = pygame.joystick.Joystick(0)
joystick.init()

done = False
while done==False:
    # EVENT PROCESSING STEP
    for event in pygame.event.get():
        if event.type == pygame.KEYDOWN:
            print("Joystick button pressed.")

    #axis29 = joystick.get_axis( 18 )
    #if axis29 > 0: 
            done = True
            myMotorRight.run(Adafruit_MotorHAT.RELEASE)
            myMotorLeft.run(Adafruit_MotorHAT.RELEASE)
            time.sleep(1.0)

    axis0 = joystick.get_axis( 1 )
    right_speed = int(axis0 * 255)
    print("Axis {} value: {:>6.3f} speed: {}".format(1, axis0, right_speed) )
    if right_speed < 0:
            myMotorRight.run(Adafruit_MotorHAT.FORWARD)
    else: 
            myMotorRight.run(Adafruit_MotorHAT.BACKWARD)
    myMotorRight.setSpeed(abs(right_speed))
    time.sleep(0.01)
    
    axis = joystick.get_axis( 3 )
    left_speed = int (axis * 255)
    print("Axis {} value: {:>6.3f}".format(3, axis), left_speed )

    if left_speed < 0:
            myMotorLeft.run(Adafruit_MotorHAT.FORWARD)
    else: 
            myMotorLeft.run(Adafruit_MotorHAT.BACKWARD)
    myMotorLeft.setSpeed(abs(left_speed))
    time.sleep(0.01)