Program Effects with LEDs on Arduino  Step by Step Guide ▷ 2021

The Arduino platform stands out for its flexibility and ease of use to build electronics projects Open Source. Thanks to the fact that it is based on free software and hardware, support creators and developers.

One of the main types of projects that Arduino users implement, They are that are based on the use of LEDs. Well, the learning curve of this element is simple and you can achieve great things in a short time.

Indeed, program effects with LEDs for an Arduino project from scratch, it’s interesting. In this post, you will learn how to do it correctly and what are the best Arduino kits for it.

What are the best Arduino kits for programming effects with LEDs?

To start creating a project focused on programming effects with LEDs, the main material required it’s an arduino kit that will simplify the process.

Here are some of the best options:

UNO starter kit

Besides being an ideal set to learn to program in C ++ and gain knowledge of basic electronics, it is considered appropriate to program effects with LEDs from scratch. In view of that, has all the necessary material inside the box.

Among its components, you will find: An Arduino UNO board which includes the ATmega 328 chip with socket for easy removal, one 8×8 LED dot matrix, one RGB LED with mount, 5 red LEDs, 5 yellow LEDs and 5 green LEDs. Like a USB cable, a 16×2 display with I2C interface, a 16-key keyboard, a water / rain sensor, a servo with its accessories, a 5V DC motor with fan, etc.

Mega Starter Kit

It’s about a arduino starter kit that has the traditional elements and has other additions that greatly expand their capacity, to guarantee a more complete experience for users. Thus, it can be used both to program effects with LEDs as well as for other electronics projects.

Highlighting your materials, we mention: An Arduino Mega board, an external power supply, 5 red LEDs, 5 blue LEDs, 5 green LEDs, 5 yellow LEDs and 5 white LEDs. In addition to an 8×8 LED dot matrix, light, temperature and humidity, water and rain, motion and distance sensors, capacitors, transistors, 10 male / female cables, 65 male / male colored cables, etc.

Basic kit for Arduino

Is another starter set to learn to work with the platform Arduino and thus, its suitability lies in the fact that it offers the possibility of creating different projects thanks to the variety of components it contains.

Next, we name the main elements found in a Basic Kit for Arduino: 830-pin board, 5 red LEDs, 5 blue LEDs, 5 yellow LEDs, 1 RGB LED, a 1×4 sec LED module, a 1×7 sec LED module, an 8×8 point LED matrix, 4 pushbutton switches, an IR remote control, an LM35 temperature sensor, 2 ball tilt sensors, various resistors, different dupont connector cables, etc.

Learn step by step how to program effects with LEDs for an Arduino project

An effect with LEDs in a arduino project, consists of programming a specific sequence that turn these lights on and off at certain time intervals.

To do this, mainly, you have to use an Arduino board and proceed as follows:

Connect the LEDs

Connect the LEDs

To start creating the effect, you need use 5 LEDs and connect them to pins 2, 3, 4, 5 and 6 of the board. At the time of doing it, you have to make sure to place the appropriate resistance to each LED, taking into account ohm’s law (V = I * R).

For example, if the voltage is 5V and you want between 5 mA and 20 mA to reach the led, then it is appropriate to use a resistor between 250 and 1,000 ohm. As a result, the connection diagram should look as shown in the image.

Controls the speed of the effect of the LEDs

Controls the speed of the LEDs effect

Starting from the previous montage, it is time to add a potentiometer that helps control the speed of the effect with LEDs. To achieve this, you need to add the following in your code at the beginning of the loop (): time = analogRead (A0). In this way, the speed of the LEDs can be read at the analog input of the potentiometer used. In the image, we show you how the potentiometer connection is carried out.

Try other eye-catching effects

Through the scheme shown in this image, there is the possibility of test and / or program other effects with LEDs in an Arduino project just by modifying the code in the program.

Said code is the following:

/ * Efectos Led

--------------

*/

int pinArray [] = { 2 , 3 , 4 , 5 , 6 , 7 };

int count = 0 ;

int timer = 100 ;

 

void setup () {

// hacemos todas las declaraciones a la vez

for (count= 0 ; count< 6 ; count++) {

pinMode (pinArray [count], OUTPUT);

}

}

 

void loop () {

// timer = analogRead (A0); // El valor leído por analog read es el temporizador

for (count= 0 ; count < 6 ; count++) {

// timer = analogRead (A0);

digitalWrite (pinArray [count], HIGH);

return (timer);

}

for (count= 0 ; count< 6 ; count++) {

// timer = analogRead (A0);

digitalWrite (pinArray [count], LOW);

return (temporizador);

}

for (count= 5 ; count> = 0 ; count--) {

// timer = analogRead (A0);

digitalWrite (pinArray [count], HIGH);

return (timer);

}

for (count= 5 ; count> = 0 ; count--) {

// timer = analogRead (A0);

digitalWrite (pinArray [count], LOW);

return (timer);

}

}

List of the best Arduino projects with LEDs that you can do yourself to practice

To acquire more learning regarding Arduino, it is recommended implement certain projects with LEDs which are an optimal method of initiation due to their ease.

So for practice, you can consider the following qualified examples:

Ballerina LED Strip

Ballerina LED Strip

Corresponds to an LED strip that is simple to assemble and is characterized by your ability to react to sounds, especially, to the rhythm of the music. For this, it contains a microphone that is responsible for capturing the noise and transfers the information to the Arduino platform to reflect it with brightness regulation and color combination of the strip.

At the time of this project, you will need: A plate Arduino Nano R3, a WS2812B LED strip, a single turn potentiometer (10 k ohms), a microphone and amplifier, a 12V 1.5A DC power supply and a 5V DC-DC converter.

An affordable Ambilight

An affordable Ambilight

The Ambilight is a backlight system that works to regulate the contrast within the room. Through Arduino, it is possible build a home medium of this type that is capable of analyzing and detecting color changes in the source, reacting to a television or monitor in the form of ambient lighting.

If you are struck by creating a totally inexpensive Ambilight system using Arduino, you have to use the following parts: Arduino uno board, 5 meter WS2812B LED strip, double-sided tape, 5V power supply and processing installed on the computer. In this case, each LED has its own chipset and a single line is used for communication.

Fair game with LED guns

Fair game with LED guns

This is a toy gun that exposes invisible infrared light via an IR LED. With this, the LED light is externalized at a wide angle so that, when aiming, it is much easier for the user. This fairground attraction can be built with Arduino for a low price.

To make the light emitted by the LED gun unique, it is recommended to program the element’s microcontroller so that it turns the LED on and off every 38 kHz (38,000 times per second); When the target’s microcontroller detects said signal, it will activate a servo motor that helps to bring down the same.

Domino clock

Domino clock

It is an elegant and original clock based on dominoes. His approach is that the first card in the row indicates the time, while the two remaining tiles allow to view the minutes. In other words, it simulates a total of three dominoes.

Among other components, it requires: An Arduino Nano board, LED lights, 3mm MDF top, 3mm translucent smoke gray acrylic top and 3mm white acrylic top. To be more striking, allow control the intensity of the LEDs depending on the ambient light conditions of the site.

A greenhouse

A greenhouse

With the help of Arduino, you can also build a greenhouse suitable for measure the temperature, humidity and light of plants, in order to keep them in the best possible condition. It is characterized by guaranteeing their well-being regardless of the outside environment, so it is possible to mount it anywhere in the house.

Regarding their operation, the stepper motors that are controlled by the arduino board, open the top panel and they turn on the greenhouse lights to proceed to watering plantsFor this reason, it can emit as many visual and acoustic alerts. Its materials are: One 5mm red LED, one 5mm green LED, one LED bulb, an Arduino Uno board, three resistors, a buzzer, a motion and temperature sensor.

If you have any questions, leave them in the comments, we will answer you as soon as possible, and it will surely be of great help to more members of the community. Thanks! 😉

Saharay Pérez

Author: Saharay Pérez

My passion is technology and social networks, I research and document the latest news and tricks from Facebook, Twitter, Instagram, WhatsApp and any social network.

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