ARDUINO TUTORIAL LESSON FOR BEGINNERS LESSON 2: CONTROLLING LED BY PULSE WIDTH MODULATION (PWM)

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#Arduino #ArduinoPWM #PulseWidthModulation

In this lesson, we are going to tackle the theory behind the control of an LED using Pulse Width Modulation (PWM), you will also see how we build the circuit, and compile and upload the program (code) to the Arduino UNO.

Reference: https://www.makerlab-electronics.com/

Step by Step Tutorial: https://e-boombots.com/lesson-2-controlling-led-by-pulse-width-modulation-pwm/
Learn about the Arduino Kit: https://youtu.be/S2Hd-TeijnU
My Collection of Boards and Sensors: https://youtu.be/sEn6LZP_mi0
LESSON 1: CONTROLLING LED BY BUTTON : https://youtu.be/_FKUegnZ9eU
Best IoT Project: https://youtu.be/lZsEdkC4A3g

Lesson 2 Controlling LED by PWM

Introduction
In this lesson, let’s try something a little easier – gradually changing the luminance of an LED through programming. Since the pulsing light looks like breathing, we give it a magical name - breathing LED. We’ll accomplish this effect with pulse width modulation (PWM).

Components
- 1 * Arduino Uno board
- 1 * Breadboard
- Jumper wires
- 1 * LED
- 1 * Resistor (220Ω)
- 1 * USB cable

Principle
Pulse width modulation, or PWM, is a technique for getting analog results with digital means. Digital control is used to create a square wave, a signal switched between on and off. This on-off pattern can simulate voltages in between full on (5 Volts) and off (0 Volts) by changing the portion of the time the signal spends on versus the time that the signal spends off. The duration of "on time" is called the pulse width. To get varying analog values, you change, or modulate, that pulse width. If you repeat this on-off pattern fast enough with an LED for example, the result is as if the signal is a steady voltage between 0 and 5V controlling the brightness of the LED. (See the PWM description on the official website of Arduino).

STEPS TO FOLLOW:
1. Build the Circuit
2. Program (Please refer to the example code.
3. Compile the Code
4. Upload the Sketch to the Arduino Board

I have recommended stores where you can buy the components:

https://e-boombots.com/
https://www.makerlab-electronics.com/
https://www.e-gizmo.net/oc/index.php

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