ARDUINO TUTORIAL LESSON FOR BEGINNERS LESSON 1: CONTROLLING LED BY BUTTON
7#Arduino #ArduinoLED #ControlLEDByButton
In this lesson, we are going to tackle the theory behind the control of an LED using a button, 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-1-controlling-led-by-button/
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Lesson 0: Installing Arduino : https://youtu.be/AUZmojEBXIA
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Lesson 1 Controlling LED by Button
INTRODUCTION
In this experiment, you will learn how to turn on/off an LED by using an I/O port and a button. The "I/O port" refers to the INPUT and OUTPUT port. Here the INPUT port of the Arduino Uno board is used to read the output of an external device. Since the board itself has an LED (connected to Pin 13), so you can use this LED to do this experiment for convenience.
Components
- 1 * Arduino Uno board
- 1 * USB cable
- 1 * Button
- 1 * Resistor (10kΩ)
- Jumper wires
- 1 * Breadboard
PRINCIPLE
Buttons are a common component used to control electronic devices. They are usually used as switches to connect or disconnect circuits. Although buttons come in a variety of sizes and shapes, the one used here is a 12mm Tactile button as shown in the following pictures. Pins pointed out by the arrows of same color are meant to be connected.
When the button is pressed, the pins pointed by the blue arrows will connect to the pins pointed by the red arrows. Generally, the button is directly connected in an LED circuit in order to turn on or off the LED. This connection is relatively simple. However, sometimes the LED will light up automatically without pressing the button, which is caused by various interferences. In order to avoid these external interferences, a pull-down resistor is used, that is, to connect a 1K–10KΩ resistor between the button port and GND. It is used to consume external interferences while connected to GND for as long as the button switch is turned off. This circuit connection is widely used in numerous circuits and electronic devices. For example, if you press any button on your mobile phone, the backlight will light up.
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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