#ARDUINO SWITCH BUTTON SERIAL#
#ARDUINO SWITCH BUTTON CODE#

These lines call the function we created in the previous step with the pin number of each button. We just need four lines of code: one for each of the buttons that we have attached to our Arduino.

#ARDUINO SWITCH BUTTON CODE#

Building the Main Loopįinally, as the last piece of code you need to add to your program, it’s time to build the void loop() function. add code here for when a button is not pressedĬode added to the if statement will run when a button is pressed, while code in the else statement will only run when a button isn’t pressed. add code here for when a button is pressed Int buttonPushed = digitalRead(pinNumber) Our if statement checks the state of the button using the built-in digitalRead function. This function can only check on button at a time, using the variable it gets from the main loop function so that it knows which button the check.

To start, we need to declare our function with an integer variable like the code below.įollowing this, we need to assign the variable we are using and create an if statement to detect when each button is pressed. We assign a different value resistor to each push button so that the analog input will receive a different. This next stage is more complex than the others, as we will be creating our own function that will be dealing with a variable from the main loop function. The concept used in this example is quite simple. PinMode(input1Pin, INPUT) // these lines declare each of the buttons as an input

#ARDUINO SWITCH BUTTON SERIAL#

Serial.begin( 57600) // this begins the serial connection with a baud rate of 57600 This is all we need in our void setup() function. First, we will start our serial connection with a baud rate of 57600, followed by the initialization of our buttons. Int input1Pin = 2 Setting Up the ButtonsĪs with most Arduino projects, we will be using a function that will run once at the beginning of the program, called void setup(). This should be placed at the top of your Arduino project, before any of the functions. Seeing as we used Digital Pins 2, 3, 4, and 5, these are the pins we will declare with our code. Assigning Buttons to Pinsįor the first step, we need to assign our buttons to the different pins on our Arduino board. The code for the project is nice and simple, without the need for any class libraries or other complicated programming. The code tells the Arduino to turn the LED on as long as the button is being pressed (completing the circuit) and to keep the LED off when the button is not. Programming Multiple Push-Buttons With an Arduino

Arduino switch button