If she holds it for 2 seconds, something different happens. For example, a single click might highlight the “hour” field of an LCD timer and a double click might highlight the “minute” field of the display.Īnother way that we can implement multiple functions with one button is for the user to hold down the button for different lengths of time with the length of the hold determining the output.įor example, if the user holds the button for half a second and releases, something happens. One way is to have the number of presses determine the output. There are couple ways to implement the multi-function button press using Arduino. We will use this ground voltage input to trigger our different functions. Now, when you press the push button (which will electrically connect both sides of the button), pin 2 to will have ground voltage applied. Connect a jumper wire from the other side of the button to the ground rail on the breadboard.Connect a jumper wire from one side of the button to pin 2 on the Arduino.Depending on the style of your pushbutton, they often fit well straddling the long trench that goes through the breadboard. Finally, place your push button on the breadboard.Repeat this using pin 12, and another LED and resistor.The orientation of the resistor doesn’t matter. Now connect one side of the 220 Ohm resistor to the short leg of the LED, and connect the other leg to the ground rail on the breadboard.
Using a jumper wire, connect pin 13 from your Arduino to the breadboard in the same channel where you have the long leg of the LED attached.Place an LED on your breadboard, make sure to note which way the long leg is facing.Using a jumper wire, connect any GND pin from the Arduino, to the ground rail on your breadboard.Based on how we press the button, different LEDs will illuminate.įollow the instructions and schematic below to get the circuit set up before we dive into the mechanics of the Arduino code. To demonstrate making one button have the functionality of two or more, we will set up a simple circuit with 2 LEDs and a button. (2) 220 Ohm resistors Set Up The Circuit: By submitting this form you agree to the privacy policy, and can opt-out anytime. You will receive email correspondence about Arduino programming, electronics, and special offers.
0 kommentar(er)
