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By Kevin McAleer, 3 Minutes
Welcome to Lesson 7 of the Raspberry Pi Pico with MicroPython - GPIO Mastery course. In this lesson, we will learn how to control motors using Pulse Width Modulation (PWM) with the Raspberry Pi Pico and MicroPython.
Raspberry Pi Pico with MicroPython - GPIO Mastery
In this lesson, you will learn:
After you have completed this lesson, you will know how to control the speed of a motor using Pulse Width Modulation (PWM) with the Raspberry Pi Pico and MicroPython. You will be able to set up a motor circuit and write MicroPython code to control the motor’s speed using PWM.
To follow this lesson, you will need:
To wire up the circuit, follow these steps:
To control the motor, you will need to write code using the machine and time modules in MicroPython. Here is some example code to get you started:
machine
time
from machine import Pin import time # Set up the pins for the motor driver inputs input_1 = Pin(0, Pin.OUT) input_2 = Pin(1, Pin.OUT) # Set the motor direction to forward input_1.value(1) input_2.value(0) # Set up the PWM output for the motor speed motor_speed = Pin(2, Pin.OUT) pwm = machine.PWM(motor_speed) pwm.freq(1000) # Set the motor speed to 50% pwm.duty(512) # Wait for 5 seconds time.sleep(5) # Stop the motor input_1.value(0) input_2.value(0) pwm.deinit()
In this lesson, you got hands-on practice working with motors using your Raspberry Pi Pico board. You learned how to wire up a circuit, and how to control the motor using MicroPython code. You can use this knowledge to create a variety of projects with your Raspberry Pi Pico board.
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