In this article We will teach you how to program in the simplest way possible an ON/OFF button on Arduino. After reading this post you will be able to mount any board and add switches to it like a true professional.
To achieve this, first we will tell you the materials you need and then we will teach you the step by step that you must do to program a button on and off with .
But this is not all you will see in these paragraphs, We will also introduce you to working with buttons and pushbuttons. Do not miss anything if you want to enjoy your future inventions.
What do I need to program an on/off button with Arduino? most important materials
The most important materials you will need to program an on/off button with Arduino are:
- Arduino compatible board. Types are generally used , either . You must ensure that the quality of the assembly and the components are the best possible, this will help you to better develop your project.
- Insertion board, you can also find it on the market as a Breadboard. This pegboard will help you insert the button ON/OFF what you want in a simpler way. Usually the size should be 4.5 by 7.5 centimeters, but it will depend on your needs.
- It is important that you buy an experimentation kit, which includes a large number of these elements. You will need for this project a resistor with a power of 10 K ohms and a tolerance of 1%.
- Switch or Push Button Switch. The component you want included is given to work by opening and closing the circuit. You will want to get a 4-pin friendly switch that has a resistance of up to 50 amps.
- Necessary wires for connecting parts.
Learn step by step how to program a button or On/Off button with Arduino
Before starting this task, you will have to know that any button can be connected to a pin on the Arduino board, even if it is digital or analog. Also, there are two types of configurations that can be used, with resistance Pull Up or with Pull Down resistance. Once you have all the materials that we mentioned in the previous paragraph, what you should do now is to follow this step by step to programming an ON/OFF button with Arduino.
Watch below:
connect button
When If you want to connect the button, you will have to take into account if you are going to do it with a Pull Up resistance or a Pull Down resistance. The first thing you’ll need to do is place the button on the insert board via the pins and then attach it. To carry out this stage you have to leave two separate legs on each side of the breadboard slits.
Next, you will need to connect the upper leg to 5V of the plate Arduino and then plug the bottom pin into the resistor. The paw that remains free of resistance must be connected to the pin that supplies the voltagethat is to GND. A line will then need to be connected from the insert board to the place where the button and resistor are connected.
Set Pull Up and Pull Down Resistance
In this step you will have to establish if you want to have a high state when you do not hold the button or low when the switch is pressed. If you decide to obtain these values, you should opt for a resistor of the type Pull Up. On the other hand, if you need the state to be low when the high button is not pressed when the switch is pressed, you will have to choose a resistor to obtain this effect. pull down.
arm circuit
What you will have to do in this step is to assemble the circuit. For this you will have to place the Arduino board together with the breadboardin which you must incorporate the push button, the resistance and join both plates with the necessary cables.
program the button
The first thing you will have to do to program the button is to assign the pins.
For this you will have to write:
const int pinion = 2; const int pinoff = 3; const int pinled = 13;
Next, you must indicate the state variables of the buttons:
int station = HIGH; int isoff = HIGH; void setup() {
After this, you will have to configure the pins as input and output. You can do this by writing the commands.
pinMode(pinion, INPUT); pinMode(pinoff, INPUT); pinMode(pinled, OUTPUT); } void loop() {
Once you have the above assigned, you will have to enter:
station = digitalRead(pinion); isoff = digitalRead(pinoff);
Now, you’ll need to set what happens when the button is clicked:
if (this == LOW) { For example, if you want a led to light up you will have to write digitalWrite(pinled, HIGH); }
In case the button is turned off, you will have to enter the commands:
if (isoff == LOW) { And make the led turn off according to the example we followed, digitalWrite(pinled, LOW); } }
Eliminate bounce and noise
Whenever you want program the button on and off removing rebounds and noises you will have to follow a few steps.
To do this you will have to enter this command to assign pins:
const int pinion = 2; const int pinoff = 3; const int pinled = 13;
Then you must set the state variables of the button, this you can do:
int station = HIGH; int isoff = HIGH; void setup() {
When you’re done, you’ll have to write to set the input pin:
pinMode(pinion, INPUT); pinMode(pinoff, INPUT);
Then you will have to set the output pin:
pinMode(pinled, OUTPUT); } void loop() {
Next, you’ll need to enter the commands so that the button’s state can be read to set variables:
station = digitalRead(pinion); isoff = digitalRead(pinoff);
Then, you will have to indicate what happens when the button is on:
if (staon == LOW) { delay(50); if (this == LOW ) { digitalWrite(pinled, HIGH); } }
In case the button is off, the process will be:
if (isoff == LOW) { delay(50); if (isoff == LOW) { digitalWrite(pinled, LOW); } } }
Get to know the best Arduino Kits to work with buttons and pushbuttons
Next, we will show you The best Arduino kits you can use to work with buttons Y buttons.
Choose the one that suits you:
LYFEI LDTR-RM012
This button and push button kit for Arduino boards supports a voltage of 3 to 5 and the size of the led is 12 x 12 mm, which you can choose from different colors. It can not only be used on plates of Arduino but also in and 51 single chipso it becomes a versatile and useful tool for any project.
ELEGOO
The present set contains an Arduino UNO R3 boarda 9 volt battery, a manual in Spanish and various buttons and pushbuttons so you can work on any type of project. In addition, it includes a 5V relay and leds of different colors.
ELEGOO connector kit
resistors that you can find in this kit will have a capacity from 10 to 300 Ohm and from 1 to 100k. In addition, you will have connectors of up to 40 pins, leds of various colors, rotary potentiometers and 6 pieces of buttons.
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