Make GIU interface for PWM in Raspberry pi

You want to make an application to run on the Raspberry Pi that has a slider to control power to a device using PWM. Today I show you how to Make GIU interface for PWM in Raspberry pi

Required Component connect LED Raspberry Pi :

1.Raspberry pi

2.Breadboard

3. Connecting wire

4.Resistors

5. 5mm LED

This book will help you to gain more knowledge of Raspberry pi Software and Hardware Problems and Solutions

Raspberry Pi Cookbook

Circuit diagram connects LED Raspberry Pi:

shows how you can wire this LED using a solderless breadboard and male-to-female jumper leads

Code GIU PWM Raspberry pi:

from tkinter import *
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setup(12, GPIO.OUT)
pwm = GPIO.PWM(12, 500)
pwm.start(100)
class App:
     def __init__(self, master):
         frame = Frame(master)
         frame.pack()
         scale = Scale(frame, from_=0, to=100,
         orient=HORIZONTAL, command=self.update)
         scale.grid(row=0)
     def update(self, duty):
         pwm.ChangeDutyCycle(float(duty))
root = Tk()
root.wm_title('PWM Power Control')
app = App(root)
root.geometry("500x100+0+0")
root.mainloop()

When you run this Code you can see like this interface and a Python program that uses a slider to change the PWM duty cycle between 0 and 100 percent You will need to connect an LED or some other kind of output device to GPIO pin 12 that is capable of responding to a PWM signal. Using an LED is the easiest option to start with