• 數位科學導論

外接直流馬達

• 講義

•  

  import RPi.GPIO as GPIO
  from time import sleep
  
  motor_pin = 18  # Use a PWM-capable GPIO like 18
  motor_in1 = 23
  motor_in2 = 24
  GPIO.setmode(GPIO.BCM)
  GPIO.setup(motor_pin, GPIO.OUT)
  GPIO.setup(motor_in1, GPIO.OUT)
  GPIO.setup(motor_in2, GPIO.OUT)
  
  pwm = GPIO.PWM(motor_pin, 1000)  # 1kHz PWM frequency
  pwm.start(0)  # Start with 0% duty cycle
  
  try:
      pwm.ChangeDutyCycle(50)  # Set speed to 50%
      GPIO.output(motor_in1,True ) #left back
      GPIO.output(motor_in2,False) #left front
      sleep(5)
  finally:
      pwm.stop()
      GPIO.cleanup()

  L298N

  5V (Pin 2/4)   --->  5V (optional, if ENA jumper is removed)
  GND (Pin 6)    --->  GND
  GPIO18 (Pin 12) --->  ENA (for PWM speed control)
  GPIO23 (Pin 16) --->  IN1
  GPIO24 (Pin 18) --->  IN2
  
  Motor           --->  OUT1 & OUT2
  Battery +       --->  12V (motor power input on L298N)
  Battery -       --->  GND (shared with Pi)